Light-induced ZnO/Ag/rGO bactericidal photocatalyst with synergistic effect of sustained release of silver ions and enhanced reactive oxygen species

Wu, Yunyan; Zhang, Lili; Zhou, Yazhou; Li, Yang; Liu, Qinqin; Hu, Juan; Yang, Juan

doi:10.1016/s1872-2067(18)63193-6

Cited by 61 publications

(22 citation statements)

References 53 publications

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“…Gas concentration analysis was performed by using an online gas chromatograph (GC D7900P, TCD detector). Apparent quantum efficiency (AQE) was measured under the same photocatalytic reaction conditions with irradiation light through a cutoff filter (400, 420, 460, or 550 nm) [ 32 , 33 ]. The AQE was calculated in the Supporting Information (Table S1).…”

Section: Methodsmentioning

confidence: 99%

Band Engineering and Morphology Control of Oxygen-Incorporated Graphitic Carbon Nitride Porous Nanosheets for Highly Efficient Photocatalytic Hydrogen Evolution

Xiong

et al. 2021

Nano-Micro Lett.

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Graphitic carbon nitride (g-C3N4)-based photocatalysts have shown great potential in the splitting of water. However, the intrinsic drawbacks of g-C3N4, such as low surface area, poor diffusion, and charge separation efficiency, remain as the bottleneck to achieve highly efficient hydrogen evolution. Here, a hollow oxygen-incorporated g-C3N4 nanosheet (OCN) with an improved surface area of 148.5 m2 g−1 is fabricated by the multiple thermal treatments under the N2/O2 atmosphere, wherein the C–O bonds are formed through two ways of physical adsorption and doping. The physical characterization and theoretical calculation indicate that the O-adsorption can promote the generation of defects, leading to the formation of hollow morphology, while the O-doping results in reduced band gap of g-C3N4. The optimized OCN shows an excellent photocatalytic hydrogen evolution activity of 3519.6 μmol g−1 h−1 for ~ 20 h, which is over four times higher than that of g-C3N4 (850.1 μmol g−1 h−1) and outperforms most of the reported g-C3N4 catalysts.

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Section: Methodsmentioning

confidence: 99%

Band Engineering and Morphology Control of Oxygen-Incorporated Graphitic Carbon Nitride Porous Nanosheets for Highly Efficient Photocatalytic Hydrogen Evolution

Xiong

et al. 2021

Nano-Micro Lett.

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“…The UV-vis spectra were measured using a Persee TU-1900 UV-vis spectrophotometer, in the wavelength range of 200-800 nm. [26][27][28]. It is notable that the characteristic diffraction peak of GO at 2θ = 12:6°was not found in the XRD pattern of ZnO-GO, which was probably because ZnO crystals were covered by limited amounts of GO that changed its structure [29].…”

Section: Photocatalytic Activity Testsmentioning

confidence: 96%

Green Synthesis of ZnO-GO Composites for the Photocatalytic Degradation of Methylene Blue

Lin

Hong

Chen

et al. 2020

Journal of Nanomaterials

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Beneficial from the excellent optical performance of zinc oxide (ZnO) nanocrystals and the absorption properties of graphene oxide (GO), the nanocomposites of ZnO and GO with synergistic photocatalytic effects were prepared by a precipitation method, in which GO is utilized as the catalyst carrier. The prepared composites were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, UV-vis spectroscopy, field emission scanning electron microscopy, and transmission electron microscopy and also performed photocatalytic activity for the nanocomposites. The results show that ZnO is uniformly loaded on the surface of GO assisted by an effective interface coupling. Due to interface coupling between ZnO and GO, electrons can be directly transferred from the valence band of ZnO to GO. The photodegradation efficiency of the composites reaches to 97.6%, and the first-order reaction rate constant of photodegradation is calculated to be 0.04401 min-1. The novel ZnO-GO composites with excellent photocatalytic performance display promising potential applications in the field of photocatalysis and will provide a new platform for building next-generation graphene-based semiconductor composites.

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“…ZnO nanoparticles show the phototoxic effect which produces reactive oxygen species, essential for biological applications [10][11][12][13] . The introduction of selective dopant on ZnO nanoparticles significantly shown enhances the photocatalytic activity with improved Z-scheme 14,15 mechanism which enhances visible light photocatalytic activity [16][17][18][19] and increases the antimicrobial activity 20 . It has been shown that there are many physical, chemical and biological routes to synthesise nanoparticles.…”

mentioning

confidence: 99%

Photocatalytic dye degradation and antimicrobial activities of Pure and Ag-doped ZnO using Cannabis sativa leaf extract

Chauhan

Verma

Kumari

et al. 2020

Sci Rep

208

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A facile green route has been employed for the synthesis of Zno and Ag-doped Zno using cannabis sativa as a reducing and stabilizing agent. the as-synthesized nanoparticles were characterized and tested for photocatalytic dye degradation and antimicrobial activity. the results suggested that nanoparticles have shown antimicrobial activity against different human pathogenic bacteria (Escherichia coli, Klebsiella pneumonia, MRSA, Pseudomonas aeruginosa, Salmonella typhi, Staphylococcus aureus) and fungal strains (Fusarium spp. and Rosellinia necatrix). Ag-doped nanoparticles comparatively have shown better removal congo red and methyl orange under visible light. Therefore, green synthesized nanoparticles could have beneficial applications in environmental science and biological field.

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Light-induced ZnO/Ag/rGO bactericidal photocatalyst with synergistic effect of sustained release of silver ions and enhanced reactive oxygen species

Cited by 61 publications

References 53 publications

Band Engineering and Morphology Control of Oxygen-Incorporated Graphitic Carbon Nitride Porous Nanosheets for Highly Efficient Photocatalytic Hydrogen Evolution

Band Engineering and Morphology Control of Oxygen-Incorporated Graphitic Carbon Nitride Porous Nanosheets for Highly Efficient Photocatalytic Hydrogen Evolution

Green Synthesis of ZnO-GO Composites for the Photocatalytic Degradation of Methylene Blue

Photocatalytic dye degradation and antimicrobial activities of Pure and Ag-doped ZnO using Cannabis sativa leaf extract

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