Direct Z-scheme ZnO/CdS hierarchical photocatalyst for enhanced photocatalytic H2-production activity

Wang, Sheng; Zhu, Bicheng; Liu, Mingjin; Zhang, Liuyang; Wang, Yuanyuan; Zhou, Ming‐Dong

doi:10.1016/j.apcatb.2018.10.019

Cited by 678 publications

(185 citation statements)

References 61 publications

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“…The semiconductor with more negative CB bottom potential can exhibit stronger reduction ability and hence achieve more efficient HER. [ 111,150 ] To date, a large number of semiconductor photocatalysts with negative CB position have been widely investigated in photocatalytic HER, such as ZnO, [ 151 ] TiO 2 , [ 152 ] Cd x Zn 1− x S, [ 153,154 ] Cu 2 O, [ 155 ] g‐C 3 N 4 , [ 156–158 ] and CdS [ 159,160 ] and so on.…”

Section: D Graphene‐based Composites For Photocatalytic Hermentioning

confidence: 99%

“…Most common metal oxides, such as TiO 2 , [ 173–175 ] ZnO, [ 160 ] In 2 O 3 , [ 176 ] etc., exhibit their potential as active HER photocatalyst owing to their relatively negative CB position. However, the large bandgap lowers the incident light absorption efficiency, and photons with higher energy are needed to excite the VB electrons.…”

Section: D Graphene‐based Composites For Photocatalytic Hermentioning

confidence: 99%

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3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

Kuang

Sayed

Fan

et al. 2020

Advanced Energy Materials

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212

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Hydrogen (H2) has been deemed as the most promising and valuable alternative to nonrenewable fossil fuels. Photocatalytic and electrocatalytic water splitting are considered to be the most efficient and environmentally friendly approaches for the sustainable H2 evolution reaction (HER). Graphene with a 3D framework has been utilized for the HER due to its unique structure and properties, including its hierarchical network, large specific surface area, diverse pore distribution, outstanding light absorption ability, and excellent electrical conductivity. The large specific surface area and hierarchically porous structure of 3D graphene can not only maximize the exposure of active sites but also promote electron transfer and gas product diffusion. In addition, the free‐standing 3D graphene monolith is easily recycled compared with powder phase support, which can prevent the loss of active catalysts. By making full use of the aforementioned merits, 3D graphene‐based composite materials show great promise as high‐performance catalysts toward photocatalytic and electrocatalytic HER. In this review, recent advances in fabricating 3D graphene‐based composite materials and their applications in both photocatalytic and electrocatalytic HER are summarized and discussed. Furthermore, the current challenges and future vision associated with the design, fabrication, and integration of 3D graphene‐based composite materials toward HER are put forward.

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Section: D Graphene‐based Composites For Photocatalytic Hermentioning

confidence: 99%

Section: D Graphene‐based Composites For Photocatalytic Hermentioning

confidence: 99%

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

Kuang

Sayed

Fan

et al. 2020

Advanced Energy Materials

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212

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“…Particularly, newly emerged semiconducting materials with tunable bandgap and wide wavelength response were explored. Examples are: In 2 S 3 , SnS 2 , CdS, BiOX (X = Cl, Br, I), ZnIn 2 S 4 , g‐C 3 N 4 , etc. Among these promising photocatalysts, CdS has attracted considerable interest with merits such as a direct‐bandgap (2.4 eV) for visible‐light absorption and a negative potential of the conduction band edge for proton reduction.…”

Section: Introductionmentioning

confidence: 99%

Unraveling Photoexcited Charge Transfer Pathway and Process of CdS/Graphene Nanoribbon Composites toward Visible‐Light Photocatalytic Hydrogen Evolution

Xia

Cheng

Fan

et al. 2019

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The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/smll.201902459. 1-10 wt% GNRs, the CdS/GNR composites with 2 wt% GNRs achieves the greatest hydrogen evolution rate of 1.89 mmol h −1 g −1 . The corresponding apparent quantum efficiency is 19.3%, which is ≈3.7 times higher than that of pristine CdS NPs. To elucidate the underlying photocatalytic mechanism, a systematic characterization, including in situ irradiated X-ray photoelectron spectroscopy and Kelvin probe measurements, is performed. In particular, the interfacial charge transfer pathway and process from CdS NPs to GNRs is revealed. This work may open avenues to fabricate GNR-based nanocomposites for solar-to-chemical energy conversion and beyond.

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“…Therefore, Au NPs has been generally applied to fabricate a visible‐light‐responding photocatalyst . On the other hand, it is well known that CdS as a metal sulfide photocatalyst has been applied in photodegradation of organic dyes and hydrogen evolution from water splitting . Besides, the photocatalytic activity and photostability of CdS can be improved via the incorporation of ZnS into CdS system .…”

Section: Introductionmentioning

confidence: 99%

Dual cocatalysts decorated three dimensionally ordered mesoporous g‐C₃N₄ with homogeneous wall thickness for enhanced photocatalytic performance

Zhao

et al. 2020

Applied Organom Chemis

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Making several components be more intimate interfacial contacts in the photocatalyst is an efficient strategy to improve the separation and transfer of photogenerated charge carries and enhance the photocatalytic performance in the visible light region. In this work, a promising photocatalyst was fabricated by loading of Au nanoparticles and Cd(0.58)Zn(0.42)S nanoparticles onto the three dimensionally ordered mesoporous g‐C3N4 material (Au/3DOM CN/Cd(0.58)Zn(0.42)S) via two‐step synthesis method to significantly intensify the transfer capability of charge. The results of characterization demonstrate that Au/3DOM CN/Cd(0.58)Zn(0.42)S photocatalyst possesses the intimate interfacial contacts of three components and homogeneous wall thickness of 3DOM g‐C3N4 framework, and these properties give Au/3DOM CN/Cd(0.58)Zn(0.42)S photocatalyst an ability that it can harvest a wider range of visible light and endow it superior photocatalytic activities for hydrogen evolution from water splitting and RhB degradation. Finally, a possible mechanism was proposed based on the photoelectrochemical measurement. This work would provide a new strategy to design and fabricate g‐C3N4‐based with 3DOM architecture materials with superior photocatalytic activity.

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Direct Z-scheme ZnO/CdS hierarchical photocatalyst for enhanced photocatalytic H2-production activity

Cited by 678 publications

References 61 publications

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

Unraveling Photoexcited Charge Transfer Pathway and Process of CdS/Graphene Nanoribbon Composites toward Visible‐Light Photocatalytic Hydrogen Evolution

Dual cocatalysts decorated three dimensionally ordered mesoporous g‐C₃N₄ with homogeneous wall thickness for enhanced photocatalytic performance

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Direct Z-scheme ZnO/CdS hierarchical photocatalyst for enhanced photocatalytic H2-production activity

Cited by 678 publications

References 61 publications

3D Graphene‐Based H2‐Production Photocatalyst and Electrocatalyst

3D Graphene‐Based H2‐Production Photocatalyst and Electrocatalyst

Unraveling Photoexcited Charge Transfer Pathway and Process of CdS/Graphene Nanoribbon Composites toward Visible‐Light Photocatalytic Hydrogen Evolution

Dual cocatalysts decorated three dimensionally ordered mesoporous g‐C3N4 with homogeneous wall thickness for enhanced photocatalytic performance

Contact Info

Product

Resources

About

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

3D Graphene‐Based H₂‐Production Photocatalyst and Electrocatalyst

Dual cocatalysts decorated three dimensionally ordered mesoporous g‐C₃N₄ with homogeneous wall thickness for enhanced photocatalytic performance