Synthesis, characterization and photocatalytic performance of VDyO  composite under visible light irradiation

He, Yiming; Zhao, Leihong; Wang, Yongjiao; Lin, Hongjun; Li, Tingting; Wu, Xin‐Tao; Wu, Ying

doi:10.1016/j.cej.2011.02.051

Cited by 39 publications

(15 citation statements)

References 48 publications

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“…Hence, some researchers have paid much attention on another route: coupling of two kinds of semiconductor particles with different redox energy levels of their corresponding conduction band (CB) and valence band (VB). Since this method was first suggested by Serpone et al in 1982, a large variety of coupled semiconductor systems have been reported [23][24][25][26][27][28][29][30][31], such as Ag/BiVO 4 [32], g-C 3 N 4 /ZnO [33] and so 3 forth. In this configuration, two advantages can be obtained: (1) an improvement of visible-light absorption; (2) an increase in the lifetime of the charge carrier.…”

Section: Introductionmentioning

confidence: 98%

Novel BiVO4/InVO4 heterojunctions: Facile synthesis and efficient visible-light photocatalytic performance for the degradation of rhodamine B

Guo

Shi

Lin

et al. 2015

Separation and Purification Technology

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Section: Introductionmentioning

confidence: 98%

Novel BiVO4/InVO4 heterojunctions: Facile synthesis and efficient visible-light photocatalytic performance for the degradation of rhodamine B

Guo

Shi

Lin

et al. 2015

Separation and Purification Technology

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“…[33,34] Because the PL emission originates from the recombination of free charge carriers, the higher PL intensity usually means more recombination of electronÀhole pairs and lower photocatalytic activity. Figure 8 illustrates the PL emission spectra of pure Ag 2 S and GR/ Ag 2 S nanocomposites excited at 370 nm at room temperature.…”

Section: Discussionmentioning

confidence: 99%

Preparation and photocatalytic activity of graphene-modified Ag₂S composite

Zhao

Zhang

et al. 2015

Journal of Experimental Nanoscience

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This paper presents a novel visible-light photocatalyst, graphene-modified Ag 2 S (GR/Ag 2 S), prepared by a facile and effective hydrothermal method with AgNO 3 , thioacetamide and graphene oxide (GO) as the precursor. The catalytic activities of the GR/Ag 2 S hybrids with different GR content (2%, 4%, 6%) were evaluated by photocatalytic decolourisation of rhodamine B (RhB) solution under visible-light irradiation. The improved photocatalytic activity of GR/Ag 2 S composites compared with pure Ag 2 S is observed and attributed to the enhanced absorption of organic dyes and increased separation efficiency of photogenerated electron¡hole pairs. The 4% GR/Ag 2 S sample exhibits the best photocatalytic activity than the others.

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“…The CB edge potential (E CB ) in relation to the normal hydrogen electrode (NHE) potential can be calculated by [46][47][48]:…”

Section: Calculation Of Band Edge Levelsmentioning

confidence: 99%

Efficient photocatalytic H₂production using visible-light irradiation and (CuAg)_xIn_2xZn_{2(1 − 2x)}S₂photocatalysts with tunable band gaps

Zhang

Minakata

et al. 2014

Int. J. Energy Res.

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SUMMARY The band structures of semiconductor photocatalysts fundamentally determine the photocatalytic activity and the H2 production from the visible‐light‐driven water‐splitting reaction. We synthesize a suite of multicomponent sulfide photocatalysts, (CuAg)xIn2xZn2(1 − 2x)S2 (0 ≤ x ≤ 0.5), with tunable band gaps and small crystallite sizes to produce H2 using visible‐light irradiation. The band gap of the photocatalysts decreases from 3.47 eV to 1.51 eV with the increasing x value. The (CuAg)0.15In0.3Zn1.4S2 (x = 0.15) photocatalyst yielded the highest photocatalytic activity for H2 production owing to the broad visible‐light absorption range and suitable conduction band potential. Under the optimized reaction conditions, the highest H2 production rate is 230 µmol m−2 h−1 with a visible‐light irradiation of 2.7 × 10−5 einstein cm−2 s−1, and the quantum yield reaches 12.8% at 420 ± 5 nm within 24 h. Furthermore, the photocatalytic H2 production is shown to strongly depend on their band structures, which vary with the elemental ratios and could be analyzed by the Nernst relation. Copyright © 2014 John Wiley & Sons, Ltd.

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Synthesis, characterization and photocatalytic performance of VDyO composite under visible light irradiation

Cited by 39 publications

References 48 publications

Novel BiVO4/InVO4 heterojunctions: Facile synthesis and efficient visible-light photocatalytic performance for the degradation of rhodamine B

Novel BiVO4/InVO4 heterojunctions: Facile synthesis and efficient visible-light photocatalytic performance for the degradation of rhodamine B

Preparation and photocatalytic activity of graphene-modified Ag₂S composite

Efficient photocatalytic H₂production using visible-light irradiation and (CuAg)_xIn_2xZn_{2(1 − 2x)}S₂photocatalysts with tunable band gaps

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Synthesis, characterization and photocatalytic performance of VDyO composite under visible light irradiation

Cited by 39 publications

References 48 publications

Novel BiVO4/InVO4 heterojunctions: Facile synthesis and efficient visible-light photocatalytic performance for the degradation of rhodamine B

Novel BiVO4/InVO4 heterojunctions: Facile synthesis and efficient visible-light photocatalytic performance for the degradation of rhodamine B

Preparation and photocatalytic activity of graphene-modified Ag2S composite

Efficient photocatalytic H2production using visible-light irradiation and (CuAg)xIn2xZn2(1 − 2x)S2photocatalysts with tunable band gaps

Contact Info

Product

Resources

About

Preparation and photocatalytic activity of graphene-modified Ag₂S composite

Efficient photocatalytic H₂production using visible-light irradiation and (CuAg)_xIn_2xZn_{2(1 − 2x)}S₂photocatalysts with tunable band gaps