Green synthesis of silver doped nano metal oxides of zinc &amp; copper for antibacterial properties, adsorption, catalytic hydrogenation &amp; photodegradation of aromatics

Babu, Avis Tresa; Antony, Rosy

doi:10.1016/j.jece.2018.102840

Cited by 116 publications

(33 citation statements)

References 61 publications

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“…The increase in the antibacterial efficacy of CuONPs has been linked with the biomolecule (terpenoids) found in the extract during the capping process [ 136 ] The antibacterial analysis of CuONPs obtained from the agar well diffusion technique against both gram positive bacteria ( Streptococcus mutans and Staphylococcus aureus ) and gram negative ( Pseudomonas aeroginos, Klebsiella pneumonia and Escherichia coli) showed the toxicity of CuONPs in destroying the growth of tested pathogens. The bactericidal effectiveness of CuONPs has been traced to the development of highly reactive oxygen species such as (OH, H 2 O 2 and O 2 - ) on the surface of the CuONPs which causes the death to the bacteria [ 125 ]. Reports on the antibacterial activities of CuONPs are summarized in Table 4 .…”

Section: Applications Of Cuonpsmentioning

confidence: 99%

Green synthesis of copper oxide nanoparticles for biomedical application and environmental remediation

Akintelu

Folorunso

et al. 2020

Heliyon

316

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Recent development in nanoscience and nanotechnology has contributed to the wide applications of metal and metal oxides nanoparticles in several field of sciences, research institutes and industries. Among all metal oxides, copper oxide nanoparticles (CuONPs) has gained more attention due to its distinctive properties and applications. The high cost of reagents, equipment and environmental hazards associated with the physical and chemical methods of synthesizing CuONPs has been a major setback. In order to puffer solution to the aforementioned challenges by reducing environmental pollution and production of cheaper nanoparticles with good properties and efficiency, this review focus on collection of comprehensive information from recent developments in the synthesis, characterization and applications from previous scientific findings on biological method of synthesizing CuONPs due to the acclaimed advantages of been cheap, environmentally friendly, convenient and possibility of been scale up in into large scale production reported by numerous researchers. Our finding also support the synthesis of CuONPs from plant sources due to relative abundance of plants for the production of reducing and stabilizing agents required for CuONPs synthesis, potential efficiency of plant biomolecules in enhancing the toxicity effect of CuONPs against microbes, prevention of environmental pollution due of nontoxic chemicals and degradation effectiveness of CuONPs synthesized from plant sources. Furthermore, this study provide useful information on the rapid synthesis of CuONPs with desired properties from plant extracts.

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Section: Applications Of Cuonpsmentioning

confidence: 99%

Green synthesis of copper oxide nanoparticles for biomedical application and environmental remediation

Akintelu

Folorunso

et al. 2020

Heliyon

316

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“…Various methodologies have been developed using chemical, physical, and biological approaches to produce ZnO-NPs, CuO-NPs and/or their coupling nanocomposites of different morphologies and shapes [4,29,30,31]. Nanoscale sizes and shapes are the main factors that influence the performance of CuO/ZnO nanocomposites during the photolysis processes [32]. Among various methods of preparation, sol-gel is commonly used for the precipitation of CuO-NPs and ZnO-NPs, as well as their nanocomposites [33].…”

Section: Introductionmentioning

confidence: 99%

Optimization of green biosynthesized visible light active CuO/ZnO nano-photocatalysts for the degradation of organic methylene blue dye

Fouda

Salem

Wassel

et al. 2020

Heliyon

178

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Herein, CuO/ZnO nanocomposites at different ratios were successfully synthesized through a green biosynthesis approach. This was performed by harnessing the fungal-secreted enzymes and proteins during the sol-gel process for nanocomposites seed growth. All fabricated nanoparticles/nanocomposites were characterized using Fourier Transform Infra-Red (FT-IR) Spectroscopy, X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM-EDX) and X-ray Photoelectron Spectroscopy ( XPS) analyses. The photocatalytic degradation efficacy of the synthesized nanocomposites was evaluated using a cationic methylene blue (MB) dye as a model of reaction. Results obtained from the FT-IR and EDX analyses revealed that CuO-NPs, ZnO-NPs, CuO/ZnO 50/50 , CuO/ZnO 80/20, and CuO/ZnO 20/80 were successfully prepared by harnessing the biomass filtrate of Penicillium corylophilum As-1. Furthermore, XRD and TEM revealed the variation in the particle size of the nanocomposites (10–55 nm) with the ratio of the nanoparticles. Notably, the size of the nanocomposites was proportionally increased with an increasing ratio of ZnO-NPs. XPS analysis affirmed the presence of both Cu and Zn in the nanocomposites with varying binding energies compared with individual nanoparticles. Furthermore, a high photo-degradation efficacy was achieved by increasing the ratio of ZnO-NPs in the nanocomposite formulation, and 97% of organic MB dye was removed after 85 min of irradiation using the CuO/ZnO 20/80 nanocomposite.

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“…The beneficial contribution of Ag to the photocatalytic properties of ZnO has been widely reported in the literature in recent years. An important part of these studies has focused on Ag decorated ZnO-based nanostructures due to their very advantageous surface-to-volume ratio in the photocatalysis process [26][27][28][29][30][31][32]. However, when the catalyst is in a nanopowder form, its separation from the treated water and its recovery for reuse become a major constraint.…”

Section: Introductionmentioning

confidence: 99%

Effects of Ag Nanoparticles on Zinc Oxide Photocatalytic Performance

et al. 2021

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We used a sol–gel spin coating technique to synthesize nanocomposite thin films based on zinc oxide (ZnO) loaded with silver nanoparticles (NPs). We tested these ZnO/Ag NP photocatalysts, with a thickness of about 100 nm, for the photodegradation of the indigo carmine dye solution. The study focused on the effects of Ag NPs on the ZnO matrix as well as the impact of their concentration on the photocatalytic performance of the nanocomposite. The study also highlighted the high stability of the photocatalytic performance of these nanocomposites. This work is a contribution in the search for non-toxic thin film photocatalysts that is usable under solar radiation for the treatment of contaminated wastewater. Innovation in the field of heterogeneous photocatalysis requires the use of solar resource with efficient results in terms of photocatalytic performance.

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Green synthesis of silver doped nano metal oxides of zinc & copper for antibacterial properties, adsorption, catalytic hydrogenation & photodegradation of aromatics

Cited by 116 publications

References 61 publications

Green synthesis of copper oxide nanoparticles for biomedical application and environmental remediation

Green synthesis of copper oxide nanoparticles for biomedical application and environmental remediation

Optimization of green biosynthesized visible light active CuO/ZnO nano-photocatalysts for the degradation of organic methylene blue dye

Effects of Ag Nanoparticles on Zinc Oxide Photocatalytic Performance

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