Advances In Green Synthesis Research Articles

Advances in Green Synthesis of Silver Nanoparticles: Sustainable Approaches and Applications

In the rapidly evolving field of nanotechnology, the synthesis of silver nanoparticles (AgNPs) has shifted towards eco-friendly methodologies, aligning with the growing demand for sustainable practices. Biologically synthesized AgNPs, particularly noteworthy for their applications in medicine and materials science, exhibit exceptional efficacy against microorganisms. The unique physicochemical properties of AgNPs, including their small size and large surface area-to-volume ratio, contribute to their versatility in diverse sectors. The advantages of AgNPs, such as ease of production, low cost, and high carrier capacity, make them preferred for various applications, including drug delivery systems. Despite concerns about environmental hazards and toxicity, the benefits of AgNPs, such as controlled drug release and targeted delivery, position them as valuable contributors to advancements in nanotechnology. Green synthesis methods, emphasizing biological processes and natural compounds, gain prominence for their sustainability and reduced environmental impact. The regulatory oversight of nanoproducts ensures their safe use, balancing their advantages with environmental considerations. Ongoing research promises further innovations, solidifying AgNPs' role as key contributors to progress in nanotechnology and materials science. Keywords: Silver nanoparticles, Green synthesis, Sustainable approaches, Characterization, Applications, Eco-friendly methods.

Green synthesis of g-C3N4 decorated with SnO2 nanocomposites using a novel Ananas comosus crown extract for boosted performance of asymmetric supercapacitors

The recent development of green chemistry, when preparing nanoparticles using plants and their various parts has received a lot of attention in today's world. Metal and metal oxide nanoparticles have gained recognition for their recent advances in green synthesis. In this work, the green synthesis of a 2D g-C3N4 nanosheet decorated with SnO2 nanocomposite was prepared by Ananas comosus crown extract for electrochemical storage applications. The novel Ananas comosus crown extract acts as a reducing or capping agent for a green approach. The prepared g-C3N4/SnO2 nanocomposites were studied with structural, functional group, morphological, elemental composition, chemical state, and surface area analysis of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman, Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET). SnO2 and various concentrations of g-C3N4 (25, 50, 75 & 100 mg) nanocomposite were investigated for electrochemical performance. At a current density of 1 Ag−1, the green synthesized (SnO2/g-C3N4 (50 mg)) SCN-50 nanocomposite displays a high specific capacitance of 302.7 Fg−1, as well as the composite demonstrates excellent capacitance retention of 94 % after 10,000 loops. Moreover, the asymmetric supercapacitor device of SnO2/g-C3N4//Activated carbon performed good reversible and cyclic stability with high energy and power density. The green synthesis of SnO2/g-C3N4 nanocomposite has promising electrode materials for future energy storage devices.

Recent advances in Green Synthesis and Therapeutic Potential of Zinc Oxide Nanoparticles: Characteristics and Applications

Recent advances in Green Synthesis and Therapeutic Potential of Zinc Oxide Nanoparticles: Characteristics and Applications

Recent advances in green synthesis of carbon dots for heavy metal ion sensing

In recent years, the field of green synthesis for carbon dots has seen significant advancements in the development of materials for heavy metal ion sensing applications. A variety of eco-friendly and sustainable approaches have been explored to synthesize carbon dots (CDs) with enhanced sensing properties. These materials have shown great promise in detecting heavy metal ions due to their high sensitivity, selectivity, and low detection limits One of the key advancements in this area is the utilization of natural sources such as biomass, organic waste, and plant extracts as precursors for the synthesis of CDs. These green precursors not only contribute to the sustainable nature of the synthesis process but also result in the production of carbon dots with unique surface chemistry and optical properties. In addition to the synthesis and functionalization strategies, the understanding of the underlying mechanisms governing the interaction between CDs and heavy metal ions has advanced significantly. This improved understanding has facilitated the design of CDs with tailored sensing capabilities and improved overall performance. Overall, the recent progress in the green synthesis of CDs for heavy metal ion sensing holds great promise for the development of cost-effective, environmentally friendly, and high-performance sensing platforms with potential applications in environmental monitoring, industrial safety, and healthcare diagnostics.

Recent advances in green synthesis of diluted magnetic plasmonic-based semiconductor nanomaterials for biomedical applications

The green synthesis of nanoparticles (NPs) is of utmost importance in nanoscience due to its eco-friendly and sustainable approach. This approach reduces chemical usage, energy consumption, and waste generation. Our featured article presents an elaborate account of green synthesis, and various biomedical applications of diluted magnetic semiconductor-based and plasmonic-based semiconductor material, particularly focusing on zinc oxide and titanium dioxide NPs. We assertively review the necessity of an environment-friendly, cost-effective, easy-to-handle, smart, and easy approach for synthesizing ZnO and TiO2 NPs and their applications. Both ZnO and TiO2 NPs got a lot of attention because of their unique chemical, physical and biological properties. Moreover, plasmonic based diluted magnetic semi-conductor possess additional advantages in terms of their band gaps and visible light absorbance compared to bared nanoparticles. These distinct properties make them exceptionally useful in biomedical fields such as antibacterial, antimicrobial, anticancer, antifungal, and cytotoxicity. We provide various green routes for synthesizing ZnO and TiO2 NPs, along with pictorial demonstrations. Additionally, we assertively review the antibacterial capacity of both ZnO and TiO2 NPs and their mechanisms in detail in this featured review.

Advances in Green Synthesis of Metal Oxide Nanoparticles by Marine Algae for Wastewater Treatment by Adsorption and Photocatalysis Techniques

The use of algae-based green synthesis of metal oxide nanoparticles (MONPs) for bioremediation is an environmentally friendly and cost-effective alternative to conventional approaches. Algal-mediated synthesis offers several benefits over other biogenic processes, such as plants, bacteria, and fungi, including ease of synthesis, scalability, and rapid synthesis. Algae are readily available in nature, nontoxic, and can produce various types of metal oxide nanoparticles. This approach could significantly accelerate the development of novel algae-nanomaterials with improved properties and performance, leading to more efficient and cost-effective bioremediation of pollutants from water solutions, seawater, and industrial effluent. This review focuses on the biogenic fabrication of metal oxide nanoparticles based on aquatic plants (microalgae and seaweeds) due to their many advantages and attractive applications in pollutant remediation from aqueous solutions. Additionally, photocatalysis is highlighted as a promising tool for the remediation of industrial effluents due to its efficacy, ease of use, quick oxidation, cost-effectiveness, and reduced synthesis of harmful byproducts.

Recent Advances in Green Synthesis of Functionalized Quinolines of Medicinal Impact (2018‐Present)

AbstractThe synthetic chemists are awakening to make substantial development in finding safer drugs against the rising communicable and non‐communicable type of diseases. By replacing traditional methods to more sustainable and greener approaches, multicomponent reactions are the rapid and efficient tool for the synthesis of organic molecules of structural diversity and complexity. Heterocyclic chemistry transforms small set of precursors into series of molecules by multicomponent domino reactions. This review covers recent trends of last five years (2018–2022) in construction of potentially drug‐like quinoline derivatives. The methods discussed here are preferable over conventional approaches being inexpensive, consuming lesser reaction time, atom economical, saving energy and manpower while avoiding toxic reagents/materials, chemical wastes and are environmental/occupational benign. The contributions covered here involve metallic, metal free strategies and other catalytic pathways including nanoparticles, ionic liquids and photocatalysis which are operationally safe and reliable.

Recent Advances in Green Synthesis, Characterization, and Applications of Bioactive Metallic Nanoparticles.

Nanoparticles (NPs) are elements derived from a cluster of atoms with one or more dimensions in the nanometer scale in the range of 1–100 nm. The bio nanofabrication of metallic NPs is now an important dynamic area of research, with major significance in applied research. Biogenic synthesis of NPs is more desirable than physical and chemical synthesis due to its eco-friendliness, non-toxicity, lower energy consumption, and multifunctional nature. Plants outperform microorganisms as reducing agents as they contain large secondary biomolecules that accelerate the reduction and stability of the NPs. The produced NPs can then be studied spectroscopically (UV-Visible, XRD, Raman, IR, etc.) and microscopically (SEM, TEM, AFM, etc.). The biological reduction of a metallic ion or its oxide to a nanoparticle is quick, simple, and may be scaled up at room temperature and pressure. The rise in multi-drug resistant (MDR) microbes due to the immoderate use of antibiotics in non-infected patients is a major cause of morbidity and mortality in humans. The contemporary development of a new class of antibiotics with different mechanisms of action to kill microbes is crucial. Metals and their oxides are extremely toxic to microbes at unprecedentedly low concentrations. In addition, prevailing infections in plants and animals are raising significant concerns across the globe. NPs’ wide range of bioactivity makes them ideal antimicrobial agents in agricultural and medical fields. The present review outlines the synthesis of metallic NPs from botanicals, which enables the metals to be in a stabilized form even after ionization. It also presents a valuable database on the biofunctionalization of synthesized NPs for further drug development.

Recent Advances in Green Synthesis of Ag NPs for Extenuating Antimicrobial Resistance.

Combating antimicrobial resistance (AMR) is an on-going global grand challenge, as recognized by several UN Sustainable Development Goals. Silver nanoparticles (Ag NPs) are well-known for their efficacy against antimicrobial resistance, and a plethora of green synthesis methodologies now exist in the literature. Herein, this review evaluates recent advances in biological approaches for Ag NPs, and their antimicrobial potential of Ag NPs with mechanisms of action are explored deeply. Moreover, short and long-term potential toxic effects of Ag NPs on animals, the environment, and human health are briefly discussed. Finally, we also provide a summary of the current state of the research and future challenges on a biologically mediated Ag-nanostructures-based effective platform for alleviating AMR.

Bionanofactories for Green Synthesis of Silver Nanoparticles: Toward Antimicrobial Applications.

Among the various types of nanoparticles and their strategy for synthesis, the green synthesis of silver nanoparticles has gained much attention in the biomedical, cellular imaging, cosmetics, drug delivery, food, and agrochemical industries due to their unique physicochemical and biological properties. The green synthesis strategies incorporate the use of plant extracts, living organisms, or biomolecules as bioreducing and biocapping agents, also known as bionanofactories for the synthesis of nanoparticles. The use of green chemistry is ecofriendly, biocompatible, nontoxic, and cost-effective. We shed light on the recent advances in green synthesis and physicochemical properties of green silver nanoparticles by considering the outcomes from recent studies applying SEM, TEM, AFM, UV/Vis spectrophotometry, FTIR, and XRD techniques. Furthermore, we cover the antibacterial, antifungal, and antiparasitic activities of silver nanoparticles.

Plant-Extract-Mediated Synthesis of Metal Nanoparticles

Metal nanoparticles (MNPs) have been widely used in several fields including catalysis, bioengineering, photoelectricity, antibacterial, anticancer, and medical imaging due to their unique physical and chemical properties. In the traditional synthesis method of MNPs, toxic chemicals are generally used as reducing agents and stabilizing agents, which is fussy to operate and extremely environment unfriendly. Based on this, the development of an environment-friendly synthesis method of MNPs has recently attracted great attention. The use of plant extracts as reductants and stabilizers to synthesize MNPs has the advantages of low cost, environmental friendliness, sustainability, and ease of operation. Besides, the as-synthesized MNPs are nontoxic, more stable, and more uniform in size than the counterparts prepared by the traditional method. Thus, green preparation methods have become a research hotspot in the field of MNPs synthesis. In this review, recent advances in green synthesis of MNPs using plant extracts as reductants and stabilizers have been systematically summarized. In addition, the insights into the potential applications and future development for MNPs prepared by using plant extracts have been provided.

Advances in green synthesis and applications of graphene

Green synthesis has grabbed appreciable attention to eliminate the negative effects associated with various chemical processes. Due to the unparalleled electrical, mechanical, thermal and excellent physical properties, graphene, as the thinnest two-dimensional material with high surface area, has the unfathomable potential in the domain of green chemistry in terms of both synthesis and application. In this regard, we present an overview of the research progresses on the greener synthesis of graphene, including micromechanical exfoliation, chemical reduction of graphene oxide (GO), chemical vapor synthesis and popping of GO. Meanwhile, various applications of graphene pertinent to sustainable developments, such as energy storage, catalysis, electrochemistry, fuel cell, supercapacitor and biomedicine have also been highlighted.

Advances in green synthesis of selenium nanoparticles and their application in food packaging

SummaryThe past decade has seen nanotechnology progressively being adopted by the food industry. Its wide application in food packaging has redefined conservative food packaging with active and intelligent packaging. Nanomaterials do not only influence food quality and safety but also offer health‐related benefits. Selenium nanoparticles (SeNPs) have been preferred in recent years because of their high biological activity. However, they are generally synthesised using physicochemical methods which are associated with toxicity. In the past decade, efforts have been directed towards advancement of green synthesis of SeNPs to minimise hazardous by‐products. The antioxidant and biocidal effects of SeNPs are generally investigated by direct contact between the oxidisable matter and/or test organisms. Lately, there is focus on the effect SeNPs incorporated into packaging films. This paper will review developments on SeNPs synthesised via plant extracts from the year 2010 to present and their potential application in active food packaging.

Recent advances in green synthesis of chromones

This minireview focuses on the recent advances in green synthesis of chromone derivatives which have been published over the last 5–10 years.

Medicinal plants: Treasure trove for green synthesis of metallic nanoparticles and their biomedical applications

The cornerstone of nanoscience and nanotechnology are nanoparticles which have immense power and functional ability in diverse fields. Nanoparticles are synthesized by physical, chemical methos but limitations are due to its toxicity. We have discussed few green synthesis routes which are eco friendly and less toxic methods, including alage, microorganisms, plants etc.. Expoiting the potential of medicinal plants, is one of the green synthesis routes and is significant because the current therapeutic approaches have toxicity problems and microbial multidrug resistance issues. As the metal nanoparticles have received great attention across the globe, so in this study we have discussed and focused many different metallic nanoparticles obtained by green synthesis using medicinal plants. We have also discussed the types, size and medicinal properties like antibacterial, antifungal, anticancer, antiviral activities of nanoparticles. The biomolecules, secondary metabolites and coenzymes present in the plants help in easy reduction of metal ions to nanoparticles. Such nanoparticles are considered as potential antioxidants and promising candidates in cancer treatment. The simplified model summarises the green synthesis, its characterization using physicochemical means and their biomedical applications. Succinctly, we have discussed the recent advances in green synthesis of metallic nanoparticles, milestones, therapeutic applications and future perspectives of biosynthesized nanoparticles from some important medicinal plants. • Green synthesis involves eco-friendly, less toxic methods exploiting medicinal and aromatic plants etc. • Biosynthesized metallic nanoparticles have shown potential role as antibacterial agents. • The nanoparticles are considered as potential antioxidants and promising candidates in cancer treatment. • They will open new avenues in Biomedical applications like antiparasitic, dentistry, urinary tract infections etc.

Recent advances in green synthesis and modification of inorganic nanomaterials by ionizing and non-ionizing radiation

Radiation holds great potential to energize the synthesis and modification of nanomaterials with high efficiency, simplicity, scalability, and environmental friendliness.

Front Cover: Recent Advances in Green Synthesis of Functionalized Phenols from Aromatic Boronic Compounds (Eur. J. Org. Chem. 46/2019)

Front Cover: Recent Advances in Green Synthesis of Functionalized Phenols from Aromatic Boronic Compounds (Eur. J. Org. Chem. 46/2019)

Recent Advances in Green Synthesis of Functionalized Phenols from Aromatic Boronic Compounds

Phenol and its derivatives are fundamental building blocks in organic synthesis and materials science. Over the past decades, tremendous attention has been paid to construct functionalized phenols, and various methods have been developed. Owing to the high efficiency and mild reaction conditions, synthesis of phenols from the hydroxylation of aryl boronic compounds has been emerging as a promising approach. In this review, we summarize the progress using aryl boronic compounds as starting reagents to synthesize phenol derivatives in the last ten years. Different reaction systems, including thermal catalytic (homogeneous and heterogeneous catalysis), photocatalytic and electrocatalytic systems, as well as oxidant involved catalyst‐free systems, will be discussed comprehensively. In the last part of the review, we will provide an outlook regarding the current challenges and future perspectives for the preparation of functional phenols from aryl boronic compounds.

Green synthesis of silver nanoparticles: biomolecule-nanoparticle organizations targeting antimicrobial activity.

Since discovery of the first antibiotic drug, penicillin, in 1928, a variety of antibiotic and antimicrobial agents have been developed and used for both human therapy and industrial applications. However, excess and uncontrolled use of antibiotic agents has caused a significant growth in the number of drug resistant pathogens. Novel therapeutic approaches replacing the inefficient antibiotics are in high demand to overcome increasing microbial multidrug resistance. In the recent years, ongoing research has focused on development of nano-scale objects as efficient antimicrobial therapies. Among the various nanoparticles, silver nanoparticles have gained much attention due to their unique antimicrobial properties. However, concerns about the synthesis of these materials such as use of precursor chemicals and toxic solvents, and generation of toxic byproducts have led to a new alternative approach, green synthesis. This eco-friendly technique incorporates use of biological agents, plants or microbial agents as reducing and capping agents. Silver nanoparticles synthesized by green chemistry offer a novel and potential alternative to chemically synthesized nanoparticles. In this review, we discuss the recent advances in green synthesis of silver nanoparticles, their application as antimicrobial agents and mechanism of antimicrobial mode of action.

Recent Advances in Green Synthesis of Silver Nanoparticles and Their Applications: About Future Directions. A Review

Nanoparticle biosynthetic discipline is still under development and is known to have a big impact on numerous manufactures for a long time. Nowadays, biosynthesis of silver nanoparticles (AgNPs) had gained so much attention in developed countries due to development demand of environmental friendly technology for material synthesis. The use of green chemistry is environmental friendly, non-toxic, and cheap. This review focused on the recent scientific publications in the green synthesis field of AgNPs and its applications. A number of microorganisms including bacteria, fungi, yeasts, algae, and plants either intra- or extracellular have been found to be capable of synthesizing AgNPs. All scientific reports reflect the unique properties AgNPs possess that find myriad applications such as antibacterial, antifungal, antivirus, and anticancer drugs, larvicidal excellent catalytic natural action towards degradation of dyes, very good antioxidants, treatment of diabetes-related complications, and wound healing activities. The recent strategy for improving the efficacy of antibiotics is to combine them with AgNPs in order to control the microbial infections as confirmed by the damage action of AgNPs on microbial deoxyribonucleic acid. This review describes also the microorganism/plant extract and the reaction parameters used in synthesis of the AgNPs, which hold prominent impact on their size, shape, and application. Recently published information on AgNP synthesis and its applications are summarized in this review.