Green synthesis of Ag ZnO nanoparticles: Structural analysis, hydrogen generation, formylation and biodiesel applications

Yadav, L.S. Reddy; Pratibha, S.; Manjunath, K. R.; Shivanna, M.; Ramakrishnappa, T.; Dhananjaya, N.; Nagaraju, G.

doi:10.1016/j.jsamd.2019.03.001

Cited by 27 publications

(7 citation statements)

References 29 publications

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“…These peaks are indexed to a face center cubic (fcc) structure of Ag nanoparticles according to JCPDS, card No. 04-0783 63 , 64 , confirming the presence of Ag nanoparticles in the composite 44 . The peaks intensity gradually increases with an increase in the Ag content, which signifies the successful formation of Ag nanoparticles on the ZnO surface.…”

Section: Resultsmentioning

confidence: 72%

In situ facile green synthesis of Ag–ZnO nanocomposites using Tetradenia riperia leaf extract and its antimicrobial efficacy on water disinfection

Mtavangu

Machunda

Bruggen

et al. 2022

Sci Rep

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In this work, Ag–ZnO nanocomposites were prepared by a green synthesis route using aqueous leaf extract of Tetradenia riperia and investigated for antibacterial activity against Escherichia coli and Staphylococcus aureus. To optimize the synthesis of the Ag–ZnO, the effects of precursor concentrations, pH, and temperatures were studied. The Ag–ZnO nanocomposites were characterized by XRD, ATR-FTIR, FESEM, and TEM. Results show that the concentration of 8% Ag, the temperature of 80 °C, and a pH of 7–8 were optimal for the synthesis of Ag–ZnO nanocomposites. The XRD analysis showed the decrease in particle size of Ag–ZnO from 23.6 to 14.8 nm with an increase in Ag concentrations, which was further supported by FESEM analysis. TEM image of 8% Ag provides more information on the coexistence of Ag on ZnO where an average particle size of 14.8 nm was determined. The ATR-FTIR analysis confirmed the presence of phenolic compounds, which work as reducing and stabilizing agents. The antimicrobial activity results show that Ag–ZnO nanocomposite demonstrated a higher antimicrobial potency on E. coli than on S. aureus. Therefore, Tetradenia riperia leaf extract is a viable route for the synthesis of Ag–ZnO nanocomposites to be used for various applications, including water disinfection.

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Section: Resultsmentioning

confidence: 72%

In situ facile green synthesis of Ag–ZnO nanocomposites using Tetradenia riperia leaf extract and its antimicrobial efficacy on water disinfection

Mtavangu

Machunda

Bruggen

et al. 2022

Sci Rep

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“…Also, the study shows that no photo-corrosion process was observed during the reaction, indicating the excellent photostability of the NPs; it is believed that the residual carbon of the synthesis is responsible for this. Promising photochemical water splitting results have also been achieved using Ag-ZnO NPs biosynthesized as a photocatalyst; under ideal conditions, the evolution rate of H 2 reaches 214 mmol g −1 h −1 [ 267 ].…”

Section: Applications Of Tio 2 and Zno Nanostructuresmentioning

confidence: 99%

Green Synthesis and Applications of ZnO and TiO2 Nanostructures

et al. 2021

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Over the last two decades, oxide nanostructures have been continuously evaluated and used in many technological applications. The advancement of the controlled synthesis approach to design desired morphology is a fundamental key to the discipline of material science and nanotechnology. These nanostructures can be prepared via different physical and chemical methods; however, a green and ecofriendly synthesis approach is a promising way to produce these nanostructures with desired properties with less risk of hazardous chemicals. In this regard, ZnO and TiO2 nanostructures are prominent candidates for various applications. Moreover, they are more efficient, non-toxic, and cost-effective. This review mainly focuses on the recent state-of-the-art advancements in the green synthesis approach for ZnO and TiO2 nanostructures and their applications. The first section summarizes the green synthesis approach to synthesize ZnO and TiO2 nanostructures via different routes such as solvothermal, hydrothermal, co-precipitation, and sol-gel using biological systems that are based on the principles of green chemistry. The second section demonstrates the application of ZnO and TiO2 nanostructures. The review also discusses the problems and future perspectives of green synthesis methods and the related issues posed and overlooked by the scientific community on the green approach to nanostructure oxides.

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“…This paper investigates the Ag-doped ZnO by inexpensive sol-gel route synthesis at the room temperature approach, which is easy to carry the entire work to find the luminescence properties. Sol-gel synthesis route allows the control of the final product characterized by varying parameters, such as size, structure, morphology [4]. Further, in this research the structural and morphological development of the pure and Ag-doped ZnO nanoparticles with reduced size are investigated.…”

Section: Introductionmentioning

confidence: 99%

Structure, morphology and luminescence properties of sol-gel method synthesized pure and Ag-doped ZnO nanoparticles

Chitradevi

Lenus

Jaya

2019

Mater. Res. Express

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Highly Crystalline pure and Ag-doped ZnO nanoparticles were prepared using the inexpensive sol-gel synthesis method with the stimulation of transition metal ion surfactant. The prepared pure and Agdoped (Silver doped) ZnO nanoparticles were characterised by various sophisticated techniques like x-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Dynamic Light scattering (DLS), Fourier Transform Infrared Spectroscopy (FTIR), UV-visible absorption, Photoluminescence (PL) and Zeta potential. The result indicates that the average grain size of the prepared nanoparticles was found to be a minuscule 24 nm with a commendable bandgap of 3.21 eV and 1.73 eV respectively. The hexagonal wurzite structures of pure and Ag-doped ZnO at room temperature confirmed the luminescence characteristics of the nanoparticles.

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Green synthesis of Ag ZnO nanoparticles: Structural analysis, hydrogen generation, formylation and biodiesel applications

Cited by 27 publications

References 29 publications

In situ facile green synthesis of Ag–ZnO nanocomposites using Tetradenia riperia leaf extract and its antimicrobial efficacy on water disinfection

In situ facile green synthesis of Ag–ZnO nanocomposites using Tetradenia riperia leaf extract and its antimicrobial efficacy on water disinfection

Green Synthesis and Applications of ZnO and TiO2 Nanostructures

Structure, morphology and luminescence properties of sol-gel method synthesized pure and Ag-doped ZnO nanoparticles

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