Characterization Of Nickel Oxide Nanoparticles Research Articles

Harnessing hyperaccumulator (Brassica oleracea var. alboglabra) extract for green synthesis of nickel oxide nanoparticles: A prospective route for post-phytoremediation

Even though phytoremediation is considered a green technology for remediating heavy metals, there are some problems with the application of this technology, particularly when it comes to managing the biomass that is used. So, processing biomass needs to be given a lot of attention. This study outlined the utilization of extracts obtained from the hyperaccumulator plant Brassica oleracea var. alboglabra to synthesize nickel oxide nanoparticles. Subsequently, the nanoparticle underwent testing to determine its suitability as an absorbent for heavy metals, specifically lead, as well as its efficacy as an antifungal agent against Fusarium sp. strain. The characterization of nickel oxide nanoparticles involved several measurements, such as scanning electron microscopy analysis, high- and low-resolution transmission electron microscopy, energy dispersive spectroscopy, X-ray diffraction, and hysteresis curve acquisition. The research findings indicate that the extract from hyperaccumulators can be utilized for the synthesis of NiO, which exhibits an absorption capacity exceeding 98% and serves as an efficient antifungal agent against Fusarium sp. pathogens. The approach utilized in this study not only prioritizes "green" and sustainability factors but also takes into account the economic aspects associated with the items being manufactured. The research has important implications in two areas. Firstly, it demonstrates the utilization of natural resources (B. oleracea var. alboglabra) in the production of nickel oxide, which serves as a safer and more eco-friendly substitute for dangerous chemicals. Furthermore, it aids in the advancement of novel techniques for effectively managing biomass hyperaccumulators.

Green synthesis of NiO nanoparticles using a Cd hyperaccumulator (Lactuca sativa L.) and its application as a Pb(II) and Cu(II) adsorbent

The proliferation of heavy metal contamination, namely, lead and copper, has emerged as a pervasive worldwide peril to human existence. One potential solution for addressing this issue is the utilization of nanoparticle adsorption, specifically for nickel oxide nanoparticles. However, to promote environmental sustainability, scholarly studies have identified green synthesis as a prospective methodology. The process of cadmium phytoremediation, although offering a potential remedy for heavy metal contamination, gives rise to apprehensions surrounding the proper disposal of cadmium hyperaccumulator plant biomass. Hence, it is imperative to establish suitable strategies for the disposition or usage of this biomass. The utilization of hyperaccumulator extracts for the eco-friendly production of nickel oxide nanoparticles remains unexplored in the current literature. The main aim of this research is to explore the possible application of Lactuca sativa L. as a plant species with the ability to accumulate high levels of cadmium. The study also seeks to examine the efficacy of utilizing these plants in the fabrication of nickel oxide nanoparticles and evaluate their capacity to absorb lead and copper ions. The characterization of nickel oxide nanoparticles is conducted through a range of techniques, encompassing scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, X-ray fluorescence, Fourier transform infrared spectroscopy, transmission electron microscopy, Brunauer-Emmett-Teller spectroscopy, and vibrating sample magnetometry. The present work achieved successful utilization of Lactuca sativa L. extract for the manufacture of nickel oxide nanoparticles, which showed notable efficacy as an adsorbent for lead and copper. The synthesis of nickel oxide nanoparticles using an extract from Lactuca sativa L. has demonstrated the viability of utilizing hyperaccumulator biomass in the phytoremediation of cadmium. This finding presents a promising avenue for investigating hyperaccumulator plants as potential sources for nanoparticle synthesis in the field of environment-based nanotechnology development.

Plant Extract Mediated Biogenic Synthesis and Characterization of Nickel Oxide Nanoparticles and its Environmental and Antibacterial Applications

This research focuses on the green synthesis of Nickel Oxide nanoparticles (NiO NPs) using Musa paradisiaca, commonly known as banana plant, as a cost-effective and eco-friendly approach. Musa paradisiaca, utilized in traditional medicine, possesses various medicinal properties, including antioxidant, antibiotic, allogeneic, and hypoglycemic antimicrobial attributes. The peduncle extract of Musa paradisiaca serves as a reducing and capping agent for NiO nanoparticle synthesis. Characterization techniques such as XRD, EDX, and UV-vis spectroscopy were employed to analyze the properties of the synthesized NiO nanoparticles. XRD analysis confirmed an average grain size of 15.26nm, while SEM images revealed round cubic-shaped nanoparticles with a highly crystalline structure. The antibacterial activity of NiO nanoparticles was investigated against bacterial strains, including Escherichia coli, Staphylococcus aureus, Bordetella bronchiectasis, and Bacillus subtilis, demonstrating effective antibacterial properties. Furthermore, the catalytic power of the synthesized nanoparticles was evaluated through the degradation of methyl blue and methyl orange dyes under sunlight and UV light. The results indicated superior degradation efficiency under sunlight compared to UV light for both dyes. Additionally, the study explored the adsorption activity of NiO nanoparticles for chromium (VI) at various concentrations, with the best adsorption percentage recorded at 17.23% under pH 4.

Synthesis and Characterization of Nickel Oxide Nanoparticles by Green as well as Chemical Routes and Comparisons their Properties

Nickel Oxide (NiO) Nanoparticles(NPs) were obtained using chemical and Eco-Friendly methods, utilizing Caper leaves extract, NaOH, and nickel sulfate hexahydrous. First step Ni(OH)2 NPs was obtained by adding NaOH solution dropwise to mixture the caper leaves extract and solution of Ni(SO4)2.6H2O. Then, calcination was done at 600 oC and 6 h for the Ni(OH)2 NPs to produce NiO NPs. Different techniques such as X-Ray, FTIR, FE-SEM, EDX and BET have used to evaluate the physical features of grown samples. However, the XRD pattern confirmed that all the samples are contains only NiO phase with average crystallite sizes 46.62 nm and 19.12 nm for both eco-friendly and co-precipitation methods, respectively. FESEM image of the NiO NPs revealed to be spherical shape. The elements content by green synthesis was shown in the EDX results as (Ni = 64.3 Wt%, O= 24.6 Wt%) and by chemical method as (Ni = 66.3, O= 29.3). According to BET analysis, the specific surface area of prepared NiO NPs using chemical precipitation method was greater than that produced using an eco-friendly method.

Synthesis and characterization of nickel oxide nanoparticles and their effect on seed germination of Vigna radiata

Nickel oxide (NiO) nanoparticles, using chemical reduction method, have been synthesized by the reaction of nickel chloride hexahydrate (NiCl2.6H2O) salt with triethylamine (Et3N) as a reducing agent at 700C and thermal decomposition of the precursor nickel hydroxide Ni(OH)2 nanoparticles from 3000C to 6000C at an increment of 1000C. The product was characterized by using X-Ray diffraction (sharp picks at 280,380,600), Scanning electron microscopy (average particle ranges between 1-100), UV-Vis spectrophotometer (absorption band at 320-350 nm), Fourier transform infrared spectroscopy (strong band at 750 cm-1), Energy dispersive X- ray spectroscopy (% weight of NiONPs is 12.73) analysis etc. The synthesized nanoparticles and nickel salt have been investigated for biophysical parameters like germination percentage, radical length (RL), Plumule length (PL) and seedling vigor index (SVI) on Vigna seed germination. The seeds treated with lower concentration show enhancement in germination% and SVI.

Efficient photodegradation of Victoria Blue B and Acridine Orange dyes by nickel oxide nanoparticles

Nickel oxide (NiO) nanoparticle has been conveniently prepared by solution combustion method using urea as a fuel. Characterization of NiO nanoparticles has been performed by XRD, SEM with EDX, TEM, BET surface area determination, and UV-absorption spectroscopy. The band gap of the nanoparticle is 3.08 eV and average size of the nanoparticle is 26 nm, and the nanoparticles exhibited a cubic structure. Further, TEM confirms the average size is<35 nm. The synthesized nanoparticle has been successfully used against Victoria Blue B (VBB) and Acridine Orange (AO) dye degradation under natural solar irradiation by varying catalyst concentration, pH, and initial dye concentration. The prepared NiO nanoparticles showed excellent photocatalytic degradation of VBB and AO. The degradation efficiency was assessed by varying catalyst concentration, solution pH, and dye concentration. We obtained a high percentage of photodegradation at 1 × 10-4 mol/dm3 dye concentration and pH 4 for both dyes.

Extraction and characterization of nickel oxide nanoparticles from Hibiscus plant using green technology and study of its antibacterial activity

Introduction and Aim: Nanomaterials are tiny particles varying in size from 1-100 nanometers with wide implications in the fields of medicine, biology, and pharmaceutical sciences. In this study, we aimed to extract Nickel oxide nanoparticles (NiO-NP) from the tropical hibiscus plant, and evaluate these nanoparticles for their structural features as well as study the antimicrobial activity of NiO-NPs against Gram-positive and Gram-negative bacteria. Materials and Methods: NiO nanoparticles were synthesized by green nanotechnology using hibiscus extract and nickel nitrate as precursors. The NiO nanoparticles obtained were investigated for its surface properties using X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy and UV-Vis analysis. Transmission Electron Microscopy (TEM) was used in calculating the size of NiO nanoparticles. The antimicrobial activity of the NiO particles was tested against E. coli and S. aureus test strains. Results: X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy studies confirmed the formation of pure and well- crystallized NiO nanoparticles. The TEM analysis displayed that the size of nanoparticles to be within the limits of 71. The NiO-NP particles displayed antimicrobial properties and inhibited the growth of bacterial test strains used in this study. Conclusion: The study demonstrated that nano Nickel oxide (NiO) particles could be successfully prepared using the hibiscus aqueous plant extract. The NiO-NP exhibited antimicrobial property against pathogenic E. coli and S. aureus bacteria, indicating that it could be used in formulations for treating infections by these organisms.

Synthesis and characterization of nickel oxide nanoparticles using Clitoria ternatea flower extract: Photocatalytic dye degradation under sunlight and antibacterial activity applications

The present study is aimed to synthesize nickel oxide nanoparticles (NiO NPs) by using medicinal flower extract of Clitoria ternatea and examine its antibacterial and photocatalytic dye degradation activities. The synthesized NPs were investigated using UV–visible spectroscopy wherein they exhibited a color change pattern and confirmed their maximum absorption peak at 280 nm, which is distinct for NiO NPs. The FTIR analysis showed the presence of various functional groups in the flower extract as well as on the NiO NPs. XRD studies revealed the high crystalline nature of NiO NPs with 9.6 nm average size. The TEM micrograph shows hexagonal shape of the NPs that are non-agglomerated with a particle size of 13 nm. The composition of nickel and oxygen elements was confirmed through EDX studies. Using the well diffusion method, the antibacterial activity of NiO NPs was tested against both gram positive and gram-negative bacterial strains of Staphylococcus aureus and Escherichia coli. Additionally, photocatalytic degradation of Fast Green (FG) and Rose Bengal (RB) dye molecules were performed by using NiO NPs. Based on the obtained results, we confirmed that NiO NPs degrade FG by 89 % and RB by 77 % in the presence of sun light.

Characterization of Nickel Oxide Nanoparticles Synthesized under Low Temperature.

In this study, ultrafine nickel oxide nanoparticles (NiO NPs) were well synthesized using a simple wet chemical method under low temperature, 300 °C. An Ni(OH)2 precursor was well precipitated by dropping NH4OH into an Ni(Ac)2 solution. TG-DTA showed that the weight of the precipitate decreases until 300 °C; therefore, the precursor was heat-treated at 300 °C. X-ray diffraction (XRD) patterns indicated that hexagonal-structured NiO NPs with (200) preferred orientation was synthesized. In addition, BET specific surface area (SSA) and HRTEM analyses revealed that spherical NiO NPs were formed with SSA and particle size of 60.14 m2/g and ca. 5–15 nm by using the low temperature method. FT-IR spectra of the NiO NPs showed only a sharp vibrating absorption peak at around 550 cm−1 owing to the Ni-O bond. Additionally, in UV-vis absorption spectra, the wavelength for absorption edge and energy band gap of the ultrafine NiO NPs was 290 nm and 3.44 eV.

Environmental benign synthesis and characterization of nickel oxide nanoparticles using chicken egg white as template and evaluations of their antibacterial/antifungal activities

Synthetic preparation of metal-based nanoparticles is harmful to human being because of the environmental pollution. To overcome the hurdles in synthesis of nanoparticles, the biogenic synthesis of nickel oxide nanoparticles (NiO NPs) has been performed by a simple, cost effective, non-toxic, and environmentally friendly sol–gel method using fresh chicken egg-white (CEW) as reducing and stabilizing agent. The NiO NPs so synthesized were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR). The powder XRD pattern studies confirmed the formation of NiO NPs and the average crystallite size was found to be 30 nm. The FESEM and TEM micrographs suggested that spherical shape of prepared NiO NPs with diameter range 40 to 50 nm. The FTIR spectrum of prepared nanoparticles confirms the Ni and O metal oxide bonding. The antimicrobial activities of synthesized NiO NPs have also been investigated for some Gram positive and Gram-negative bacterial as well as some fungal strains and encouraging results were obtained and discussed at length.

Biosynthesis and characterization of nickel oxide nanoparticles by using aqueous grape extract and evaluation of their biological applications

This study involved the use of aqueous extract from grapes as reducing substance for the green synthesis of NiO nanoparticles (NiONPs). The morphology, crystalline structure and elementary composition were investigated through various characterisation methods, such as X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy and UV–Visible spectroscopy, to demonstrate the synthesis of pure NiONPs. Strong anti-bacterial inhibitory activities of NiONPs have been examined by pathogenic bacterial strains studied against Gram-negative bacterial strain Klebsiella pneumoniae and Gram-positive bacterial strain Staphylococcus aureus. Potential cytotoxicity against human breast cancer (MCF-7) and human brain cancer (AMGM5) cell lines was shown by NiONPs. NiONPs have shown excellent biological applications. Moreover, NiO nanoparticles exhbibit toxicity to be safely used for different biomedical applications.

Investigations on Acoustical and Thermal Properties of Ethylene Glycol Based Nickel Oxide Nanofluids: Concentration and Temperature

The acoustical and thermophysical properties of nanofluids is of great importance in heat exchange systems. Thus, these properties of nickel oxide (NiO) nanoparticles dispersed in ethylene glycol (EG) were studied after synthesizing and characterization of NiO nanoparticles. Speed of sound, acoustic impedance and free volume for NiO-EG nanofluids first increased upto 0.6 wt % and then decreased. However, viscosity, adiabatic compressibility and intermolecular free length first decreased upto 0.6 wt % and then increased. The density was observed to increase with increase in concentration and decrease with temperature. Speed of sound, viscosity and acoustic impedance decreases with increase in temperature, whereas, adiabatic compressibility, intermolecular free length and free volume increases. Thermal conductivity of NiO-EG nanofluids increased upto 0.6 wt % followed by its decrease, and it also decreased with the temperature at all concentrations. In conclusion, NiO-EG nanofluids upto 0.6 wt % concentration are very useful for nanofluids applications in thermal systems.

Bio-inspired Nickel Oxides Nanoscale Synthesis by using Peel of Citrus Sinensis

AbstractThis contribution provides the synthesis and characterization of nickel oxide nanoparticles (NiO NPs) which were prepared by green synthesis method using natural extract oranges peel skin (Peel Citrus Sinensis) as an effective bio-oxidizing/bio-reducing agent. The effect of different calcination temperatures on the size of the NiO NPs was investigated. The prepared nanoparticles were characterized by various techniques such as X-rays diffraction (XRD) results indicated that all the samples have a face-centered cubic (FCC) structure and confirmed the presence of high degree of crystallinity nature NiO NPs. The functional group composition of NiO NPs were investigated by using attenuated total reflection-Fourier transform infrared (ART-FTIR), Photoluminescence (PL), and Scanning electron microscopy (SEM).

Green synthesis and physiochemical characterization of nickel oxide nanoparticles: Interaction studies with Calf thymus DNA.

One of the most promising applications of nanomaterials is that of nanobiosensors, using biomolecules such as nucleic acids as receptors. This study aimed to synthesize nickel oxide nanoparticles (NiO NPs) by an environmentally friendly green synthesis, using the extract of the herb Coriandrum sativum (coriander). The synthesized NPs were characterized using UV-Visible spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photon spectroscopy, field emission scanning electron microscopy coupled with energy dispersive spectroscopy, dynamic light scattering, zeta potential and transmission electron microscopy. All results confirmed the synthesis of pure, spherical, positively charged NiO NPs of around 95nm in diameter with prominent hydroxyl groups attached to the surface. Furthermore, interaction studies of synthesized NiO NPs with calf thymus DNA (CT DNA) were performed using UV-Visible spectroscopy, UV-thermal melting, circular dichroism, and fluorescence spectroscopy. CT DNA served as a substitute for nucleic acid biosensors. All experimental studies indicated that the NiO NPs bound electrostatically with CT DNA. These studies may facilitate exploring the potential of NiO NP-nucleic acid conjugated materials to be used as nanobiosensors for various applications, especially in pharmacological, epidemiological, and environmental diagnostic applications, and in detection.

Synthesis and physical characterization of nickel oxide nanoparticles and its application study in the removal of ciprofloxacin from contaminated water by adsorption: Equilibrium and kinetic studies

Synthesis and physical characterization of nickel oxide nanoparticles and its application study in the removal of ciprofloxacin from contaminated water by adsorption: Equilibrium and kinetic studies

Preparation and characterization of nickel oxide nanoparticles and their application in glucose and methanol sensing

Article history: Received October 21, 2014 Received in revised form January 29, 2015 Accepted 8 March 2015 Available online 8 March 2015 In this work, a low cost glucose and methanol nonenzymatic sensor was prepared using nickel oxide (NiO) nanofilm electrodeposited on a bare Cu electrode. Electrochemical deposition was assisted with cetyl trimethylammonium bromide (CTAB) as a template. Scanning electron microscopy (SEM) was applied to observe the surface morphology of the modified electrode. Cyclic voltammetry (CV) and amperometry techniques were used to study the electrocatalytic behavior of NiO porous film in glucose and methanol detection. For glucose sensing, the electrode showed a linear relationship in the concentration range of 0.01-2.14 mM with a low limit of detection (LOD) 1.7 μM (signal/noise ratio (S/N)=3). Moreover, high sensitivities of 4.02 mA mM−1 cm−2 and 0.38 mA mM−1 cm−2 respectively in glucose and methanol monitoring suggested the modified electrode as an excellent sensor. The NiO-Cu modified electrode was relatively insensitive to common biological interferers. This sensor possessed good poison resistance towards chloride ions, and long term stability and significant selectivity towards glucose and methanol. Finally the proposed sensor was successfully applied for determination of glucose in human blood serum samples.

Synthesis, Magnetic and Surface Properties of Reduced Graphene Oxide Supported Nickel Oxide Hybrid Nanomaterials

This study focuses on the preparation and characterization of Nickel oxide nanoparticles (NiONPs) supported on the reduced graphene oxide (r-GO) surface by a simple ultra-sonochemical method (r-GO-NiONPs). The formation of the r-GO was confirmed by FT-IR spectroscopy. The layer content of the r-GO was characterised by Raman spectroscopy. The crystalline nature and average particle size of the NiONPs were inferred by Powder-XRD spectroscopy. The surface morphology of the prepared nanoparticle was studied by the Scanning Electron Microscopy (SEM). The total surface area of the r-GO-NiONPs was ascertained by Nitrogen gas BET adsorption isotherm. Surface area of r-GO-NiONPs is 282 m2g-1 which is little over twice of Graphene Oxide (GO) 132 m2g-1. The magnetic properties of the prepared r-GO-NiONPs was studied using Vibrating Sample Magnetometer (VSM). Field dependent magnetization studies of r-GO-NiONPs delivers a very promising result.

Extracellular synthesis and characterization of nickel oxide nanoparticles from Microbacterium sp. MRS-1 towards bioremediation of nickel electroplating industrial effluent

In the present study, a nickel resistant bacterium MRS-1 was isolated from nickel electroplating industrial effluent, capable of converting soluble NiSO4 into insoluble NiO nanoparticles and identified as Microbacterium sp. The formation of NiO nanoparticles in the form of pale green powder was observed on the bottom of the flask upon prolonged incubation of liquid nutrient medium containing high concentration of 2000ppm NiSO4. The properties of the produced NiO nanoparticles were characterized. NiO nanoparticles exhibited a maximum absorbance at 400nm. The NiO nanoparticles were 100–500nm in size with unique flower like structure. The elemental composition of the NiO nanoparticles was 44:39. The cells of MRS-1 were utilized for the treatment of nickel electroplating industrial effluent and showed nickel removal efficiency of 95%. Application of Microbacterium sp. MRS-1 would be a potential bacterium for bioremediation of nickel electroplating industrial waste water and simultaneous synthesis of NiO nanoparticles.

Preparation and characterization of nickel oxide nanoparticles via solid state thermal decomposition of dinuclear nickel(II) Schiff base complex [Ni2(Brsal-1,3-ph)2] as a new precursor

The synthesis and characterization of nickel oxide nanoparticles via solid state thermal decomposition of a dinuclear nickel(II) complex, [Ni2(Brsal-1,3-ph)2] as a new precursor is reported. [Ni2(Brsal-1,3-ph)2] complex is characterized by elemental analyses and Fourier transform infrared (FT-IR) spectroscopy. Thermogravimetric analysis reveals its thermal stability and decomposition pattern. Solid state thermal decomposition of the complex at 450 °C for 3 h produces nickel oxide nanoparticles which are characterized by FT-IR spectroscopy, X-ray powder diffraction, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). SEM and TEM images demonstrate the square shape of the NiO nanoparticles of between 10 and 15 nm.

Synthesis and Characterization of Nickel Oxide Nanoparticles from Ni(salen) as Precursor

Nickel oxide nanoparticles have been synthesized by thermal treatment of N,N′-(bis(salicylidene)-ethylene-1,2-diamine)Nickel(II); [Ni(salen)]; as precursor which has been synthesized via two methods: [Ni(salen)] were obtained by solid state reaction in absence solvent and co-precipitation reaction in presence of propanol as solvent, respectively. Nickel oxide nanoparticles were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and Fourier transform infrared spectroscopy.