Synthesis and characterization of graphene oxide modified AgBr nanocomposites with enhanced photocatalytic activity and stability under visible light

Zhang, Du; Tang, Hua; Wang, Yuqi; Wu, Kongqiang; Huang, Hong; Tang, Guogang; Yang, Jin

doi:10.1016/j.apsusc.2014.07.101

Cited by 61 publications

(15 citation statements)

References 40 publications

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“…It is known that the photoinduced corrosion (degradation or decomposition) in aqueous solution under illumination will occur when the quasi Fermi energy of the photogenerated electrons (holes) is higher (lower) than the thermodynamic reduction (oxidation) potential of the semiconductor . Clearly, the reductive corrosion (i.e., Ag 3 PO 4 , AgBr, Ag 2 CO 3 , and AgI) was caused by the photo‐generated electrons (as shown in Figure A), whereas the oxidative corrosion (i.e., CdS and ZnO) was mainly driven by the photo‐generated holes (as shown in Figure B). In some cases, both the reductive and oxidative corrosions (i.e., Cu 2 O) could simultaneously occur, which were motivated by the photo‐generated electrons and holes, respectively .…”

Section: Design Strategies Of Graphene‐based Composite Photocatalystsmentioning

confidence: 99%

Graphene in Photocatalysis: A Review

Wageh

et al. 2016

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In recent years, heterogeneous photocatalysis has received much research interest because of its powerful potential applications in tackling many important energy and environmental challenges at a global level in an economically sustainable manner. Due to their unique optical, electrical, and physicochemical properties, various 2D graphene nanosheets-supported semiconductor composite photocatalysts have been widely constructed and applied in different photocatalytic fields. In this review, fundamental mechanisms of heterogeneous photocatalysis, including thermodynamic and kinetics requirements, are first systematically summarized. Then, the photocatalysis-related properties of graphene and its derivatives, and design rules and synthesis methods of graphene-based composites are highlighted. Importantly, different design strategies, including doping and sensitization of semiconductors by graphene, improving electrical conductivity of graphene, increasing eloectrocatalytic active sites on graphene, strengthening interface coupling between semiconductors and graphene, fabricating micro/nano architectures, constructing multi-junction nanocomposites, enhancing photostability of semiconductors, and utilizing the synergistic effect of various modification strategies, are thoroughly summarized. The important applications including photocatalytic pollutant degradation, H production, and CO reduction are also addressed. Through reviewing the significant advances on this topic, it may provide new opportunities for designing highly efficient 2D graphene-based photocatalysts for various applications in photocatalysis and other fields, such as solar cells, thermal catalysis, separation, and purification.

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Section: Design Strategies Of Graphene‐based Composite Photocatalystsmentioning

confidence: 99%

Graphene in Photocatalysis: A Review

Wageh

et al. 2016

Small

943

401

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show abstract

“…Numerous reports addressing the use of carbon nanotubes, reduced graphite oxide and graphene thin films as ideal transparent electrodes for optoelectronic devices have appeared in the past years [4][5][6]. Carbon-based films address a broad range of coating applications [7], and some recent studies showed their possible applications for medical applications [8], and photocatalysis [9,10].…”

Section: Introductionmentioning

confidence: 99%

Tuning the surface morphology of self-assembled graphene-like thin films through pH variation

Alfè

Gargiulo

Capua³

2015

Applied Surface Science

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“…Up to now, one of the most used photocatalysts is TiO 2 . TiO 2 photocatalyst has some advantages such as good stability, nontoxicity, high activity and low cost [8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of graphene oxide/Ag2CO3 photocatalyst and its visible light photocatalytic activity

Wei

et al. 2015

Applied Surface Science

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Synthesis and characterization of graphene oxide modified AgBr nanocomposites with enhanced photocatalytic activity and stability under visible light

Cited by 61 publications

References 40 publications

Graphene in Photocatalysis: A Review

Graphene in Photocatalysis: A Review

Tuning the surface morphology of self-assembled graphene-like thin films through pH variation

Preparation and characterization of graphene oxide/Ag2CO3 photocatalyst and its visible light photocatalytic activity

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