Eco-friendly Procedures Research Articles

A Smart Irrigation System Using the IoT and Advanced Machine Learning Model

The rapid advancement of IoT (Internet of Things) technologies and sophisticated machine learning models is driving innovation in irrigation systems, laying the foundation for more effective and eco-friendly smart agricultural procedures. This systematic literature review strives to uncover the advancements and challenges in the advancement and implementation of IoT-based smart irrigation systems integrated with advanced machine learning techniques. By analyzing 43 relevant studies published between 2017 and 2024, the research focuses on the ability of these technologies have evolved to meet the challenges of modern agriculture irrigation system. Predictive analytics, anomaly detection, and adaptive control—that enhance irrigation precision and decision-making processes. Employing the PRISMA methodology, this review uncovers the strengths and limitations of current systems, highlighting significant achievements in real-time data utilization and system responsiveness. However, it also brings attention to unresolved issues, including the complexities of data integration, network reliability, and the scalability of IoT-based frameworks. Additionally, the study identifies crucial gaps in standardization and the need for flexible solutions that can adapt to diverse environmental conditions. By offering a comprehensive analysis, this review provides key insights for advancing smart irrigation technologies, emphasizing the importance of continued research in overcoming the existing barriers to wider adoption and effectiveness in various agricultural settings.

Impact of entrepreneurial orientation and ESG on environmental performance: moderating impact of digital transformation and technological innovation as a mediating construct using Sobel test

The purpose of this study is to analyze the impact of dimension of dynamic capabilities such as Entrepreneurial orientation (EO), technological innovation (TIN), and digital transformation (DT) and dimension of Stakeholder environment, society, and governance (ESG) practices on environmental performance (EP) in the handicraft industry. This study also investigates the mediating impact of dynamic capabilities such as Technological innovation (TIN) and Entrepreneurial orientation between ESG and EP and has applied the Sobel test. This study also checks the moderating impact of Digital transformation (DT) on EP through TIN. The Sobel test is most suitable for mediation analysis, whether partial or complete mediation. For this study, exploratory research methods , convenience sampling, and tools used a 5-point Likert scale. Therefore, the study was well suited to this type of experimental research, since it used the PLS–SEM path coefficient algorithm and PCA analysis software to examine several correlations simultaneously. A total of 150 respondents participated in this survey who were artisan’s new entrepreneurs and firm owners in the handicraft industry. Because of their outsized influence on emissions worldwide and consumption of resources, businesses worldwide have a responsibility to ensure environmental stability while also working to improve their practices to improve the craft industry as part of the small industry. These findings prove that by adopting ESG principles and Entrepreneurial orientation, the impact of technological innovation supports the environment's performance. The development of eco-friendly goods and procedures, the enhancement of craft productivity, and the evolution of sustainable development strategies are all greatly aided by digital transformation, technological innovation handicraft business environmental sustainability in the face of the escalating difficulties brought on by climate change. For verification and exploration of entrepreneurial orientation, technological innovation, Environmental performance, and environmental social and governance (ESG), this study is supported by the Dynamic capability theory (DCT), stakeholder theory, and especially ESG criteria. The research shows that firms' environmental performance can be significantly improved by emphasizing ESG factors and embracing technological advancements and entrepreneurial orientation.

Revolutionizing smart textiles: a comprehensive review of conductive ink printing for sustainable and adaptive wearable applications

Purpose The demand of species monitoring for the benefit of various sectors such as industrial, medicinal and ecological has surged rapidly in the recent past. Therefore, the purpose of this paper is to articulate the major developments in synthesizing conductive inks for the structurization of miniaturized as well as disposable or reusable electrochemical equipments. Design/methodology/approach This section is not applicable to a review paper. Findings Numerous times the need for the use point becomes significant for achieving accurate as well as swift quantification. As an alternate, the wearable and effectual reuseable electrochemical sensors are being practiced. The technique of fabricating devices using conductive inks encompasses novelty, as it provides flexibility in designing the electrodes. The increase in the popularity of inks development is governed by its features of simplicity, reduced cost and waste generation, high production and eco-friendly engineering procedures. Further, the electrochemistry aspects of conductive inks highlighting the importance of their compounds and binders has also been discussed emphasizing on the conductive materials. Originality/value This paper is an original review work. This paper will be helpful for manufacturers/researchers from smart wearable textile sector in envisaging innovative developing techniques of sensors as well as biosensors through conductive inks.

Learning Strategies from Nature's Blueprint to Cyclic Carbonate Synthesis.

Nature is a remarkable source of inspiration for developing sustainable and eco-friendly synthetic procedures. In recent years, the synthesis of cyclic carbonates has garnered significant attention due to their versatile applications in various fields, including materials science, pharmaceuticals, and green chemistry. Drawing inspiration from nature, researchers have explored innovative synthetic routes that mimic biological processes to produce cyclic carbonates efficiently and sustainably. This article reviews nature-inspired synthetic procedures for cyclic carbonate formation, highlighting the key strategies and principles employed. Through biomimicry, researchers aim to harness the efficiency and selectivity observed in biological systems to develop greener and more sustainable methods for cyclic carbonate synthesis. Integrating bio-inspired strategies offers opportunities for improving synthetic efficiency and contributes to reducing the environmental impact associated with traditional chemical processes. This review underscores the potential of nature-inspired approaches in advancing the field of cyclic carbonate synthesis toward more sustainable and environmentally benign practices, focusing on recent literature.

THE IMPACT OF LIBERALIZATION, PRIVATIZATION, AND GLOBALIZATION (LPG) ON INDIAN AGRICULTURE

The study examines the influence of Liberalization, Privatisation and Globalization (LPG) reforms on agricultural sector in India since their initiatives in 1991. The study explores evolving disputes and government measures in providing solution for the problem faced by the marginal and small-scale agriculturists. The research objective is to examine the influence of LPG on export of agricultural items, Technological innovations, Geographical disparities along with ecofriendly practices. The study examined the strengths such as enhancement in export of agricultural products and diversification of harvests, weaknesses are identified as geographical differentiation and reduction in public funding these aspects are analysed through SWOT analysis. Encouragement or opportunities on LPG reforms includes combination of technological innovations and ecofriendly procedures whereas, threats are identified as financial disparities among farmers and environmental depletion. This complete analysis offers a mixed view of varied influence of LPG on agriculture in India, Proposing the requirement for sustainable approach and higher inclusiveness for agriculture expansion. KEYWORDS: Liberalization, Privatization, Globalization, SWOT analysis, Indian agriculture, regional disparities, Environmental sustainability, Technological advancements, Government policies

Determination of metformin from micro-liter plasma and blood glucose test strip using eco-friendly micro-extraction procedures for point-of-care diagnostics

Metformin is commonly used in the treatment of type 2 diabetes and polycystic ovary syndrome. Beyond these common applications, it also holds promise in treating chronic pain, and as an antiaging and anticancer agent. In addition, it has cardiovascular protective and neuroprotective effects. However, elevated concentrations of metformin in the plasma, such as in patients with renal impairment or with conditions that can disrupt lactate clearance, could cause metformin-associated lactic acidosis. Moreover, metformin can cause a deficiency of vitamin-B12 and folic acid and impact one-carbon metabolism negatively. This study employs micro-extraction procedures to extract metformin from the human plasma and blood glucose test strips followed by detection using matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS). Under the optimized micro-extraction procedures and by using an eco-friendly base and solvent, the proposed method required only 10 µL of the human plasma and a small piece of the blood glucose test strip for metformin analysis. The method exhibits a linear range of 0.05–5 μg mL−1 with a coefficient of determination (r2) of 0.999 and a limit of detection of 0.01 μg mL−1. The relative standard deviation (RSD) and relative error (RE) were both below 6.7 %. The test strip is a disposable product; its reuse before disposal could increase its additional applicability. Furthermore, major blood proteins and their modifications could be identified using this tiny volume of blood by mass spectrometry after protein digestion. The proposed technique could be invaluable in point-of-care diagnostics, enabling rapid monitoring of metformin plasma concentration and major plasma proteins to help patients mitigate the risk of metformin-associated lactic acidosis. To reduce organic waste in clinical applications, micro-extraction is a simple and efficient protocol for sample preparation using minute volumes of blood samples.

A Paradigm Shift towards Environmental Responsibility in Sustainable Green Tourism and Hospitality

The demand for various cultural experiences and easier access to travel has driven the exponential rise of the global tourism and hospitality industries in recent decades. However, the increased tourism has sparked worries about how it would affect the environment which led to a paradigm change in favour of sustainable methods. The phrase "green tourism" describes a collection of behaviors designed to reduce the adverse effects of tourism-related activities on the environment, society, and culture. This entails implementing eco-friendly programs, encouraging conservation, and cultivating community involvement. Similarly, green hospitality emphasizes eco-friendly procedures in lodging establishments, promoting waste minimization, energy efficiency, and ethical sourcing. The carbon footprint of travel is one of the main issues that green tourism and hospitality attempt to address. With the assistance of carbon offset programs and the promotion of environmentally friendly transportation options, like electric vehicles, the sector is coming to understand the significance of lowering greenhouse gas emissions. Furthermore, the implementation of sustainable building designs, energy-efficient technologies, and renewable energy sources in hospitality facilities helps to reduce their overall environmental effect. An additional crucial component of green tourism is water conservation. Water-saving methods, like low-flow fixtures and effective irrigation systems, are being implemented by accommodations to reduce water usage and safeguard nearby ecosystems. Waste management is essential to reaching sustainability targets in the tourism and hospitality industries. There is a growing movement to reduce the use of single-use plastics, encourage recycling, and establish composting techniques. Establishments promote the circular economy and lessen environmental deterioration by encouraging guests to dispose of waste responsibly. The effectiveness of projects aimed at promoting green tourism depends on community involvement. Forming alliances with nearby communities guarantees equitable distribution of economic gains and promotes a sense of collective accountability for environmental preservation. Moreover, maintaining the uniqueness of sites is aided by fostering cultural sensitivity and respect for local knowledge. To sum up, green tourism and hospitality mark a significant turn in the direction of a more responsible and sustainable sector. The tourist and hospitality industry may make a substantial contribution to environmental preservation by implementing eco-friendly practices, reducing carbon footprints, preserving water resources, handling waste responsibly, and interacting with local people.

Green marketing's effect on customer satisfaction and awareness: an empirical study

Environmental sustainability has emerged as a major concern in today's corporate world. Governments are concerned about environmental issues. The term "green" has gained popularity in today's world. Green marketing refers to the strategy of endorsing goods or services that are friendly to the environment, and contribute positively to the earth. It boosts a company's brand and preserves the ecosystem. A boost of companies to use eco-friendly procedures and the provision of more sustainable choices to customers are the two main objectives of green practices marketing. The study goes through to evaluates consumers' awareness of green marketing, ascertains the pros and cons and obstacles of implementing green marketing, and analyses the elements that induce a consumer to choose green sustainable goods, the study is carried down with the locality respondents present around Chikkmagaluru district through the Forms and it concludes that Green marketing is a tool for preserving natural resources and safeguarding the environment for future generations, utilization of alternative energy sources to produce goods and services are ways to achieve sustainable growth. Green marketing had a positive impact on the worldwide market equally.

Catalytic Performance in Nitroarene Reduction of Nanocatalyst Based on Noble Metal Nanoparticles Supported on Polymer/s-Layer Protein Hybrids.

We present a novel bionanocatalyst fabricated by the adsorption-reduction of metal ions on a polyurethane/S-layer protein biotemplate. The bioinspired support was obtained by the adsorption of S-layer proteins (isolated from Lentilactobacillus kefiri) on polyurethane particles. Silver and platinum nanoparticles were well-loaded on the surface of the support after the combination with metallic salts and reduction with H2 at room temperature. Transmission electron microscopy analysis revealed the strawberry-like morphology of the bionanocatalysts with a particle size, dn, of 2.39 nm for platinum and 9.60 nm for silver. Both systems catalyzed the hydrogenation of p-nitrophenol to p-aminophenol with high efficiency in water at mild conditions in the presence of NaBH4. Three different amounts of bionanocatalyst were tested, and in all cases, conversions between 97 and 99% were observed. The catalysts displayed excellent recyclability over ten cycles, and no extensive damage in their nanostructure was noted after them. The bionanocatalysts were stable during their production, storage, and use, thanks to the fact that the biosupport provides an effective driving force in the formation and stabilization of the metallic nanoparticles. The successful bioinspired production strategy and the good catalytic ability of the systems are encouraging in the search for nontoxic, simple, clean, and eco-friendly procedures for the synthesis and exploitation of nanostructures.

Green zinc/galactomannan-based hydrogels push up the photovoltage of quasi solid aqueous dye sensitized solar cells

In the present work, we implement environmentally friendly water-based Quasi-Solid Electrolytes (QSE) for Dye Sensitized Solar Cells (DSSCs), displaying an unprecedent open circuit voltage (VOC) as high as 750 mV. The production of the hydrogel for QSE-DSSCs is achieved by exploiting the concept of fully green design and fabrication, through the selection of components such as the natural polysaccharide galactomannan (GM), biocompatible zinc salts, and the employment of eco-friendly synthetic procedures to produce the hybrid gelating agents. In the process, moderate temperature (<40 °C), only aqueous solutions are employed, and, at most, ethanol is used in some phases of the procedure. Depending on the type of the initial salt, either zinc hydroxysulfate lamellae or zinc oxide nanoparticles are created within the gel matrix, with a more extended nanoporous structure in the latter case. The nanostructures and the gels are investigated by multiple techniques, including X-ray diffraction (XRD), infrared spectroscopy (IR), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). Upon ensuing addition of I-/I3- redox mediator and assembling of the device, state-of-the-art aqueous QSE-DSSCs are achieved. The latter couples a 2 % efficiency (limited by charge diffusion as proved by Electrochemical Impedance Spectroscopy) with a good Average Visible Transmittance (AVT), and Light Utilization Efficiency (LUE), a couple of coveted features in wave-selective or semi-transparent devices. Finally, Linear Response-Time Dependent DFT (LR-TDDFT) simulations are carried out on a model iodine/iodide layered zinc hydroxy sulphate structure towards a better understanding of the mechanism responsible for the high AVT.

Eco-friendly and sustainability assessment of technologies for nutrient recovery from human urine—a review

Nitrogen (N), phosphorus (P), and potassium (K) represent the primary components of commercial NPK fertilizer and are primarily derived from finite resources through complex and expensive processes. To ensure global food security, the development of sustainable and eco-friendly procedures for fertilizer production has gained attention. Humans generally excrete urine containing 11 g of N/L, 0.3 g of P/L of P and 1.5 g of K/L, which benefit plant growth. The recovery of these essential plant nutrients from human urine has become the focal point of increasing research endeavors. Despite the potential advantages of nutrient recovery from urine, this process is complicated, and the economic implications are substantial. Furthermore, human urine may harbor undesirable contaminants, such as pathogens, pharmaceutical residues, hormones, and elevated salt levels, which could be disseminated into the environment through agriculture. This study appraised various emerging technologies for nutrient recovery from human urine, considering their challenges, environmental impact, economic viability, and the overall sustainability of the processes. This review elucidated that most nutrient recovery technologies demonstrated elevated efficiency in nutrient recovery. Nevertheless, a recurrent oversight involves neglecting the potential transfer of contaminants and pathogens into environmental matrices. The complexity of these processes and their economic feasibility vary, with some proving intricate and economically unviable. Given that no singular technology fully mitigates these challenges, integrating two or more technologies appears imperative to address drawbacks and enhance overall system performance.

‘GOING GREEN’ AT WORKPLACE: A COMPREHENSIVE ANALYSIS

Green HRM projects are those that include environmental management into HRM processes, which are becoming more and more important. Utilizing every employee interaction to support and maintain environmentally friendly business practices and increase awareness is known as "green HRM," which helps businesses run more sustainably. Thus, green HRM encompasses two main elements: knowledge capital preservation and eco-friendly HR procedures. The purpose of this study is to examine the state of and obstacles to green HRM practices in India, an area of very little research. Examining the present Green HRM methods used by Indian companies, their degrees of awareness and execution, and their rate of growth in the Indian context are the main goals. The study addresses the need to comprehend green human resource management in developing nations like India by evaluating the success rate of green HRM implementation.

Harmony in HR: Exploring the Synergy of Artificial Intelligence and Green Practices for Sustainable Workplaces”

This study investigates the pivotal role of Artificial Intelligence (AI) in the implementation and enhancement of Green Human Resource Management (GHRM) practices within contemporary organizations. Recognizing the imperative for businesses to align with sustainable principles, the research explores how AI technologies contribute to the adoption and optimization of eco-friendly initiatives in the realm of human resource management. The study delves into specific AI applications, such as predictive analytics, machine learning algorithms, and data-driven decision-making, to elucidate how these technologies can assist in identifying, recruiting, and nurturing environmentally conscious talent. Furthermore, the research investigates the potential of AI to streamline HR processes, reduce resource wastage, and foster a corporate culture committed to environmental sustainability. Through a comprehensive analysis of case studies and empirical evidence, this study aims to elucidate the practical implications, benefits, and challenges associated with integrating AI into GHRM practices. Saving the environment should be a top priority for every company. The majority of companies, however, do not prioritize eco-friendly policies and procedures these days. Making a profit and competing are their only concerns. Because of this, abandoning the organization's dedication and to environmental protection becomes its biggest drawback. However, there are groups who make it their mission to encourage eco-friendliness and green activities. In this research, we look at how green HRM is affected by several eco-friendly strategies.

Detection and photothermal inactivation of Gram-positive and Gram-negative bloodstream bacteria using photonic crystal biosensor and plasmonic core-shell.

Plasmonics and core-shell nanomaterials hold great potential to develop pharmaceuticals and medical equipment due to their eco-friendly and cost effective fabrication procedures. Despite these advancements, combating drug-resistant bacterial infections remains a global challenge. Therefore, this study aims to introduce a tailored theoretical framework for a one-dimensional (1D) photonic crystal biosensor (PCB) composed of (ZrO2/GaN)N/defect layer/(ZrO2/GaN)N, designed to detect Gram-positive and Gram-negative bloodstream bacteria employing the transfer matrix method (TMM). In addition, using the finite difference methods (FDM), the photothermal inactivation of bloodstream bacteria with plasmonic core-shell structures (FeO@AuBiS2) was explored using key factors such as light absorption, heat generation, and thermal diffusion. By incorporating six dielectric layers and contaminated blood into the proposed PCB, a maximum sensitivity of 562 nm per RIU was recorded, and using rod-shaped plasmonic core-shell structures, 5.8 nm-1 light absorption capacity and 152 K change in temperature were achieved. The maximum detection sensitivity, light absorption, heat conduction and heat convection capacity of the proposed 1D PCB and plasmonic core-shell show an effective approach to combating drug-resistant bacteria.

Harnessing Nature’s Green Potential: Nanotechnology Driven Fabrication of Plant-Derived Nanoparticles

Millions of tons of metallic nanoparticles (MNPs) are synthesized each year and used in various fields like nano-enabled devices, personal care, medicine, food, and agriculture. The reaction chemicals and processes employed in the industrial synthesis of MNPs are well acknowledged to be hazardous to the environment.Green synthesis has been recommended as a means of minimizing the usage of harmful substances and adverse chemical modification in the synthesis of MNPs. Extracts of organic chemicals, microorganisms, plants and plant-derived materials have all been employed as reducing agents in green synthesis.One of the most efficient, easy, cost-effective, and environmentally acceptable techniques for reducing the usage of toxic chemicals is to employ plant extracts in the synthesis of MNPs. Several eco-friendly procedures for the fast production of MNPs have been reported by utilizing aqueous extracts of plant components including the leaf, bark, flower, peel, shoot, tuber, resin, roots etc.Every year, new scientific publications are released, with each one highlighting the advantages of the green methodover classic synthesis. However, over two decades after the preliminary reports about the new technique exploded, commercial production of green-synthesized nanoparticle (NPs) does not appear to have found a means to scale up. This review covers green MNPs synthesis from various plant extracts and their potential applications as antimicrobial agents covering the literaturesince 2015. While highlighting the use of MNPs in a variety of fields and the potential impact of phytochemicals associated in MNPs production.&#x0D;

In-syringe vortex-assisted dispersive liquid–liquid microextraction for determination of copper and vanadium in food samples using a new poly functionalized pyridinone derivative as a complexing agent and soybean oil methyl ester as extraction solvent

Traditional liquid-phase extraction procedures are against the principles of green chemistry. Therefore, it is important to develop eco-friendly procedures. In this study, an in-syringe vortex-assisted dispersive liquid–liquid microextraction (IS-VA-DLLME) approach was developed for the separation of Cu2+ and V5+. Soybean oil methyl ester (SBME) was used as the extraction solvent for the first time, and a newly synthesized poly functionalized pyridinone derivative, that is, 3-acetyl-4-hydroxy-1-(2-hydroxyethyl)-6-methylpyridin-2(1H)-one (AHHP), was employed as the complexing agent. The extraction was performed using a commercial syringe and enhanced by vortex agitation. Under the optimum conditions, a wide linear range was achieved for V5+ (0.3–500.0 μg L−1) and Cu2+ (0.4–800.0 μg L−1) with limits of detection of 0.07 and 0.09 μg L−1, for V5+ and Cu2+, respectively. Reasonable enrichment factors were obtained for V5+ (19.8) and Cu2+ (20.3), for the 10.0 mL sample. The within- and between-run precision (RSD) was in the range of 1.6–2.2% (n = 10). The validity of this procedure was evaluated using certified reference materials. The proposed technique was used to separate V5+ and Cu2+ from different food samples prior to inductively coupled plasma-optical emission spectrometric analysis with relative recoveries ranging from 95.0 to 105.0%.

Synergetic effect of hydrothermal and deep eutectic solvents (DES) pretreatments on Robinia wood fractionation for the manufacture of bioethanol and cellulose nanocrystals

This study dealt with the use of environmentally friendly processes based on microwave-assisted autohydrolysis (MAA) and deep eutectic solvents (DES) for the selective fractionation of Robinia pseudoacacia wood (RW) within a biorefinery approach. MAA enabled the recovery of 76% of hemicelluloses in the form of oligomers. Afterwards, different conditions were assessed for the optimal delignification of RW with the DES choline chloride combined with lactic acid reaching delignification ratios up to 86%. Two different methods were accomplished to valorize the cellulosic-rich solid fraction after delignification: (i) bioethanol via enzymatic-fermentative pathway (attaining 53.3 g ethanol/L, about 83% of ethanol yield), and (ii) cellulose nanocrystals (length of 27–550 nm, width of 2–12 nm). Hence, this study presents a novel multiproduct biorefinery to selectively separate the main components of RW and valorize its cellulosic fraction using eco-friendly procedures.

Sustainable Supplier Selection using Neutrosophic Multi-Criteria Decision Making Methodology

Sustainable supplier selection is an important part of supply chain management since it encourages ethical and eco-friendly procedures. This study examines the most important criteria and factors for judging the sustainability performance of suppliers and presents a thorough overview of sustainable supplier selection. A decision-making framework for sustainable supplier selection is created via a review of relevant research, case studies, and best practices. Key factors for assessing suppliers include environmental performance, social responsibility, and economic viability, all of which are included in the framework. The results stress the need to take into account suppliers' energy efficiency, waste management, and social responsibility initiatives including fair labor practices and community involvement. Other essential considerations for long-term sustainability include economic viability and supply chain resilience. Organizations may improve their environmental impact, reduce supply chain risks, and boost overall performance by using sustainable supplier selection practices. This study used the TOPSIS method to rank sustainable suppliers. The TOPSIS method is employed with the single-valued neutrosophic set to deal with vague information. A case study in a food company is conducted to show the best supplier

Temperature Dependence on Structural Properties of Liquid Phase Synthesized ZnO

Transparent conducting oxide material, ZnO nanoparticles has been synthesized using inexpensive and eco-friendly synthesis procedures with less or environmental pollutants and no liquid waste products. The effect of the temperatures on the structural properties for the synthesized ZnO nanocrystals has been investigated. In this study, we report an easy, low-cost, re-producible method for synthesizing ZnO nanoparticles by means of the liquid phase method. The ZnO nanocrystals were synthesized using the wet chemical route and the effect of temperature variation on the structural properties of investigated synthesized using powder x-ray diffractogram (XRD). The temperatures for the synthesis were varied from 120 °C to 200 °C in steps of 20 °C. The results show that, during the first stage of the synthesis of ZnO (at 120 °C), the XRD diffraction pattern confirms the cubic structure of zinc peroxide and the XRD pattern of the samples obtained at temperatures of 140 °C, 160 °C, 180 °C and 200 °C were confirmed to be hexagonal (wurtzite) crystal structure of ZnO. The XRD diffraction patterns of the 140 °C and 160 °C samples show some impurity phases which were associated with the zinc acetate by-product which is a colloid complex of water and methyl succinate and were removed by evaporation as temperatures were increased to 180 °C and 200 °C respectively. As temperature increases, the peak of the diffractograms of the sample becomes sharper and narrow indicating a decrease in width. A shift in peak positions to higher angles was observed and the positional parameter, bond angle, β, average crystallite size, APF, number of unit cells and density generally increase with temperature. However, the lattice parameters ‘a’ and ‘c’, bond lengths b and b1, bond angle, α, dislocation density, strain and unit cell volume were found to generally decrease with temperature.

Evaluation of innovative polyvinyl alcohol/ alginate/ green palladium nanoparticles composite scaffolds: Effect on differentiated human dental pulp stem cells into osteoblasts

Three-dimensional (3D) scaffolds are attracting great concern for bone tissue engineering applications. However, selecting an appropriate material with optimal physical, chemical, and mechanical properties is considered a great challenge. The green synthesis approach is essential to avoid the production of harmful by-products through textured construction, sustainable, and eco-friendly procedures. This work aimed at the implementation of natural green synthesized metallic nanoparticles for the development of composite scaffolds for dental applications. In this study, innovative hybrid scaffolds of polyvinyl alcohol/alginate (PVA/Alg) composite loaded with various concentrations of green palladium nanoparticles (Pd NPs) have been synthesized. Various characteristic analysis techniques were used to investigate the synthesized composite scaffold's properties. The SEM analysis revealed impressive microstructure of the synthesized scaffolds dependent on the Pd NPs concentration. The results confirmed the positive effect of Pd NPs doping on the sample stability over time. The synthesized scaffolds were characterized by the oriented lamellar porous structure. The results confirmed the shape stability, without pores breakdown during the drying process. The XRD analysis confirmed that doping with Pd NPs does not affect the crystallinity degree of the PVA/Alg hybrid scaffolds. The mechanical properties results (up to 50 MPa) confirmed the remarkable effect of Pd NPs doping and its concentration on the developed scaffolds. The MTT assay results showed that the incorporation of Pd NPs into the nanocomposite scaffolds is necessary for increasing cell viability. According to the SEM results, the scaffolds with Pd NPs provided the differentiated grown osteoblast cells with enough mechanical support and stability and the cells had a regular form and were highly dense. In conclusion, the synthesized composite scaffolds expressed suitable biodegradable, osteoconductive properties, and the ability to construct 3D structures for bone regeneration, making them a potential option for treating critical deficiencies of bone.