Aqueous Extract of Saraca indica Leaves in the Synthesis of Copper Oxide Nanoparticles: Finding a Way towards Going Green (original) (raw)
Related papers
Comparative Studies of Synthesized Copper Oxide Nanoparticles using Aqueous Extract of Leaves
Nanochem Res , 2023
The use of plant extracts as reducing agents in the synthesis of metal and metal oxide nanoparticles has come into prominence due to their procedural simplicity, precursor’s eco-friendliness, and cost effectiveness. The phytochemicals in plant extracts works as a reductant when mixed with metal salt solution. In this study, we compared the percentage yields of copper oxide (CuO) nanoparticles synthesized using aqueous leaf extracts of Psidium guajava (guava), Terminalia catappa (tropical almond), Cymbopogon citratus (lemon grass), and Tithonia diversifolia (mexican sunflower) at varying volume-ratios with copper sulphate standard solutions. The optimization study of the biosynthesis mixtures revealed that the mixture with the volume-ratio 1:1 of Cu salt : plant extract gave the highest yields in all samples. The nanoparticles were characterized using Fourier-transformed infra-red (FT-IR) to confirm characteristic bands expected of metal oxide particles at the finger print region. The transmission electron microscope (TEM) presented the average sizes within the range of 3.68 and 7.92 nm, while the energy dispersive X-ray Spectroscopy (EDS) confirmed their high purity due to the absence of other elements except carbon. The biosynthesized nanoparticles are highly pure with their small sizes and this makes them suitable for adsorption applications.
International Journal of Environment, Engineering and Education, 2022
Nanoparticles of a transitional metal oxide such as Copper (II) oxide or cupric oxide have gained considerable interest in the research and development community due to the corresponding conventional materials' extremely different characteristics. Hence, this study aimed at characterizing Copper (II) oxide nanoparticles synthesized through a direct green chemical approach using the outer leafy cover of the maize husk. The fresh maize husk's optical absorption spectrum shows broad peaks centered around 209, 241, and 331 nm, which are the characteristic of flavonoids. The structural analysis shows the formation of Nantokite with a facecentered crystal structure, which has crystalline peaks (111), (220), (311), and (331) at 2θ = 28.5, 47.4, 56.28, and 76.6, respectively. In contrast, the spectrum of Copper (II) oxide showed a base-center monoclinic crystal structure with lattice parameters: a= 4.688, b = 3.4229, c = 5.1319 and β = 99.91. In conclusion, nanoparticles' synthesis using aqueous corn husk extract was successfully synthesized and characterized. This environmentally friendly approach is a simple, environmentally friendly, inexpensive process and is reproducible.
Green and Traditional Synthesis of Copper Oxide Nanoparticles—Comparative Study
Nanomaterials
The current study compared the synthesis, characterization and properties of copper oxide nanoparticles (CuO) based on green and traditional chemical methods. The synthesized CuO were confirmed by spectroscopic and morphological characterization such as ultraviolet-visible (UV-vis) spectroscopy, fourier transform infrared (FTIR) spectroscopy, zeta potential, scanning electron microscopy (SEM) and energy dispersed X-ray (EDX). Electrochemical behavior of the modified electrodes was done using cyclic voltammetry (CV) in ferricyanide/ferrocyanide ([Fe(CN)6]4−/[Fe(CN)6]3−) redox probe. As revealed by UV spectrophotometer, the absorption peaks ranged from 290–293 nm for all synthesized nanoparticles. Based on SEM images, CuO were spherical in shape with agglomerated particles. Zeta potential revealed that the green CuO have more negative surface charge than the chemically synthesized CuO. The potential of the green synthesized nanoparticles was higher relative to the chemically synthesiz...
Objectives: The aim of present study was to synthesize and characterize copper oxide nano particles (CuONPs) from leaf extract of Alternanthera sessilis (Linn). Materials and Methods: Green synthesis of copper oxide nanoparticles has been carried out from aqueous copper sulphate using leaf extract of Alternanthera sessilis (Linn.). The bio-molecules present in the leaf juice react with copper sulphate, upon reduction at room temperature resulted in the formation of copper oxide nanoparticles (CuONPs). Results: Synthesized nanoparticles (NPs) were studied by SEM- EDAX to investigate the morphology. NPs were spherical and the size in the range of 22.6nm to 25.2nm. The EDAX spectrum revealed the presence of copper oxide. FT-IR spectrum examined the occurrence of bioactive functional groups required for the reduction method. The elemental composition of synthesized product was determined by XRF technique. The oxidation state of NPs was confirmed through the XPS spectra. Conclusions: This room temperature, one-pot green synthesis shows promising results for producing CuO nanoparticles in a low cost, eco- friendly process. Metal nanoparticles with antimicrobial activity when embedded and coated on to surfaces can find immense applications in water treatment, synthetic textiles, biomedical and surgical devices, food processing and packaging.
Endocrine, metabolic & immune disorders, 2021
A green method using biological dependable processes has been established for the synthesis of CuO nanoparticles. Synthesis of CuO nanoparticles were done using an environmental friendly method by taking aqueous solution of copper(II) sulfate and leaf extract of Ixoro coccinea. Characterization of the synthesized CuO nanoparticles was done using instruments such as UV-visible spectrophotometer, scanning electron microscopy, transmission electron microscopy, and Fourier-transform infrared spectroscopy. The existence of peaks obtained in FTIR confirms CuO nanoparticles. A visible change was observed in the solution prepared as it changed from light blue to light brown to dark brown once the extract was added to the copper sulfate solution. An average size of 300 nm was obtained during SEM analysis due to the formation of nanoparticle clusters. The TEM images of CuO nanoparticles separated after ultrasonication of the dispersion show that they possess an average size of 80-110 nm. It was found that the ultrasonication increases the distribution of nanoparticles in a fluid by preventing the formation of clusters. It was found that Ixiro coccinea plant leaves are a suitable alternative for the easy and green synthesis of CuO nanoparticles.
IRJET, 2021
Development of green technology is generating interest in researcher towards eco-friendly and low-cost method for biosynthesis of nanoparticles. In this study, green synthesis of copper oxide nanoparticles using copper chloride dihydrate precursor and Adenanthera Pavonina Leaves extract as reducing and capping agent during the synthesis. GS-CuO nanoparticles were characterized by UV-vis absorption Spectroscopy, Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Diffraction (XRD) and Transmission Electron Microscope (TEM). The existence of the CuO nanoparticles was revealed by UVvis spectroscopy. The FTIR spectra of leaf extract and synthesised CuO nanoparticles identifies the functional groups of the active components. The formation of CuO nanoparticles has been confirmed by X-ray diffraction and average crystallite size for assign peaks were 39.24nm. The morphology of biosynthesized nanoparticles was found to be 11.16nm.
Copper oxide nanoparticles synthesis and characterization using UV-vis spectrophotometer and TEM
International Journal of Research in Pharmaceutical Sciences
To synthesise Copper oxide nanoparticles and study it's characterisation using UV -viz - Spectrophotometer and TEM. Copper oxide nanoparticles are eco-friendly, cost-efficient and diverse utilisation all over the medical field. The shape of the CuO nanoparticles are spherical, and its characterisation is done using SEM, TEM, and UV-vis techniques. The size of the nanoparticles mediated in each plant extract differs from one another. MATERIALS AND METHODS * Collection and Preparation of Plant extracts. * Synthesis Of CuONPs * Characterization of copper nanoparticles * preparation of nanoparticles powder. The plant extract is in green colour, and the CuO nanoparticles are seen in light yellowish in colour. Uv-VIS SPECTROMETER: The particle size ranges from 2-100nm and shape is spherical. The graph reached its peak at the wavelength of 300nm. The TEM shows spherical shape, dispersion and versatile nanoparticles. They appear to be arranged in a cluster, open and quasi-linear supe...
Black Tea Extract Mediated Green Synthesis of Copper Oxide Nanoparticles
2018
Copper oxide nanoparticles were synthesized using black tea extract and copper nitrate as thecopper source by the green method at different calcination temperatures. This method has manyadvantages such as nontoxic, economic viability, ease to scale up, less time consuming andenvironmental friendly approach for the synthesis of CuO nanoparticles without using any organicchemicals. The synthesized CuO nanoparticles were characterized by powder X-ray diffraction(XRD), scanning electron microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR).The average crystallite size of CuO nanoparticles was calculated using Scherrer formula. The Xraypowder diffraction (XRD) analysis revealed the formation of monoclinic phase CuO withaverage particle size of 22-39 nm.
GC-MS Analysis and Green Synthesis of Copper Nano particles Using Vitex negundo.L Leaf Extract
Recently, development of reliable experimental protocols for synthesis of metal nanoparticles with desired morphologies and sizes has become a major focus of researchers. Green synthesis of metal nanoparticles using plant extracts emerged as a nontoxic and eco-friendly method for synthesis of metal nanoparticles. In this study biosynthesis of stable copper nanoparticles were done using aqueous leaf extract of Vitex negundo leaf from 3mm copper sulphate solution. Synthesized nanoparticles were characterized under UV-Vis spectroscopy at the range of 400 nm to 800 nm at varying intervals of time. The peak at 254nm revealed the presence of CuNPs. It was observed that the Vitex negundo leaf extract can reduce copper ions into copper nanoparticles within 10 to 15 min of reaction time. These biosynthesized Cu nanoparticles were characterized with the help of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and SEM techniques. GC-MS analysis revealed that the leaf extract of Vitex negundo.L,contains steroids, saponins, tannins, phenols, triterpenoids, flavonoids, glycosides, and glycerides. These bioactive principles are found to be responsible for bioreduction during the synthesis of spherical copper nanoparticles. The preparation of nano-structured copper particles using Vitex negundo.L leaf extract thus provides an environmentally friendly option, as compared to currently available chemical and physical methods.
Growing nanostructure by green synthesis process is an attractive method for developing nanoparticles and nanostructures. It is a new, very simple, cheap, cost effective easy to handle, hazards free and environment friendly method. Using green method we can synthesis the homogeneous and fine size of nanoparticles. Copper oxide is important due to its application in medical science. Copper oxide nanoparticles have been synthesized taking Aloe Vera leaves by using green method. Structural, optical and morphological properties investigated and presented. The particle in crystalline in nature and average size between 50 to 60nm. The morphology of the nanoparticles can be controlled by tuning the amount of Aloe vera extract.