Facile synthesis of GO/ZnO–Ag nanocomposite and evaluation of rhodamine B dye under sun light

Govindhan, P.; Pragathiswaran, C.; Chinnadurai, M.

doi:10.1007/s10854-016-5530-1

Cited by 11 publications

(5 citation statements)

References 43 publications

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“…The peaks in the region between 3300 and 3700 cm –1 can be attributed to the O–H bond stretching vibration of the hydroxyl groups. The peak at 1649 cm –1 may refer to the remaining sp 2 bonds in GO. − The FTIR spectra for the samples containing ZnO have peaks in the area between 400 and 460 cm –1 that represent the stretching of oxygen–metal bonds (Figure b) . Also, the intensity of the bands that recognize the bonds containing oxygen was decreased because of the partial reduction of the GO through the annealing of the samples, as shown in Figure b.…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic Activity of Graphene Oxide/Zinc Oxide Nanocomposites with Embedded Metal Nanoparticles for the Degradation of Organic Dyes

2020

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Nanocomposite materials based on metal nanoparticles and graphene oxide (GO) have gained increasing attention for their wide range of potential applications in various materials science fields. In this study, an efficient photocatalyst based on GO/ ZnO nanocomposites with embedded metal nanoparticles was successfully synthesized via a simple one-pot method. The synthesized nanocomposites were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared (FTIR) spectroscopy. The photocatalytic activity of the synthesized nanocomposites was tested in the degradation of methylene blue (MB) dyes, as a model of water pollutants. A catalytic activity of 84% was achieved using a nanocomposite with a percentage of 3.125% GO, after 90 min sunlight irradiation. Furthermore, embedded copper and silver nanoparticles were used as dopants to study their effects on the activity of the photocatalyst. The GO−ZnO−Cu nanocomposite showed that the activity toward MB degradation was decreased by 50%, while a significant increase in the activity of MB degradation was achieved by the GO−ZnO−Ag nanocomposite. The removal efficiency of MB by the GO−ZnO−Ag nanocomposite reached 100% after 40 min of sunlight irradiation. Thus, the GO−ZnO−Ag nanocomposite has the potential to be an efficient adaptable photocatalyst for the photodegradation of organic dyes in industrial wastewater.

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Section: Resultsmentioning

confidence: 99%

Photocatalytic Activity of Graphene Oxide/Zinc Oxide Nanocomposites with Embedded Metal Nanoparticles for the Degradation of Organic Dyes

2020

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“…The XRD spectrum of Co–ZnO/GO nanocomposite shows the presence of co-doped ZnO peaks overlaying the surface of the GO lattice. The Crystallinity of the nanocomposite is very similar to that of co-doped ZnO, which indicates that graphene oxide provides a platform on which nanoparticles can be adsorbed [ 26 ]. Furthermore, the presence of the GO peak in the composites suggests that the nanoparticles could adhere to these graphene layers, which could prevent aggregation.…”

Section: Resultsmentioning

confidence: 99%

Highly electroactive Co–ZnO/GO nanocomposite: Electrochemical sensing platform for oxytetracycline determination

Mliki,

Echabaane,

Rouis

et al. 2024

Heliyon

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“…As an sp2 hybridized carbon nanomaterial composed of a single layer of carbon atoms arranged in a unique 2D honeycomb structure, GO and graphene have also been incorporated into ZnO/Ag systems for enhanced photocatalytic performances [208][209][210][211][212]. Ravichandran et al fabricated ZnO:Ag/GO ternary nanocomposite thin films on glass substrates via a simple cost-effective automated jet nebulizer spray pyrolysis approach for the photocatalytic degradation of MB dye [209].…”

Section: Coupled With Carbon-based or Emerging 2d Materialsmentioning

confidence: 99%

Ag-decorated ZnO-based nanocomposites for visible light-driven photocatalytic degradation: basic understanding and outlook

Zhang¹,

Li²,

Xu³

2022

J. Phys. D: Appl. Phys.

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The heterogeneous photocatalytic processes have exhibited tremendous potential in the field of solar energy utilization and environmental remediation. Next to TiO2, ZnO has been widely used as a promising photocatalyst material in recent years. However, several noticeable drawbacks make it less effective, such as poor solar-light harvesting, and rapid recombination of the photo-excited charge carriers. The decoration of noble metal nanoparticles on ZnO surfaces is a feasible strategy by its localized surface plasmon resonance (LSPR) absorption for aggrandizing the visible absorption of ZnO, meanwhile the formation of the Schottky barrier at the metal-semiconductor interface can effectively separate the photo-induced charge carriers. Among them, due to the high conductivity, antimicrobial activity, mechanical thermal strength and electrical double layer capacitance of silver, Ag decorated ZnO (ZnO/Ag) nano-photocatalysts have exhibited a remarkably photocatalytic efficiency and high cost performance for degradation of organic pollutants, and been endowed them with growing applications. In this review, we focus on the recent advancements (including the fundamental degradation mechanism, synthesis methods, corresponding applications and optimized strategies related to the ZnO/Ag photocatalysis) in ZnO/Ag-based photocatalysts for visible light-driven photocatalytic degradation, and concluding with a perspective on the future direction and prospects of this type of nanocomposite photocatalysts.

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Facile synthesis of GO/ZnO–Ag nanocomposite and evaluation of rhodamine B dye under sun light

Cited by 11 publications

References 43 publications

Photocatalytic Activity of Graphene Oxide/Zinc Oxide Nanocomposites with Embedded Metal Nanoparticles for the Degradation of Organic Dyes

Photocatalytic Activity of Graphene Oxide/Zinc Oxide Nanocomposites with Embedded Metal Nanoparticles for the Degradation of Organic Dyes

Highly electroactive Co–ZnO/GO nanocomposite: Electrochemical sensing platform for oxytetracycline determination

Ag-decorated ZnO-based nanocomposites for visible light-driven photocatalytic degradation: basic understanding and outlook

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