Journal Article10.1021/NN5019945
MoS2/graphene cocatalyst for efficient photocatalytic H2 evolution under visible light irradiation.
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TL;DR: A composite material consisting of CdS nanocrystals grown on the suface of a nanosized MoS2/graphene hybrid as a high-performance noble-metal-free photocatalyst for H2 evolution under visible light irradiation is reported.
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Abstract: Exploiting noble-metal-free cocatalysts is of huge interest for photocatalytic water splitting using solar energy. Here we report a composite material consisting of CdS nanocrystals grown on the suface of a nanosized MoS2/graphene hybrid as a high-performance noble-metal-free photocatalyst for H2 evolution under visible light irradiation. Through the optimizing of each component proportion, the MoS2/G-CdS composite showed the highest photocatalytic H2 production activity when the content of the MoS2/graphene cocatalyst is 2.0 wt % and the molar ratio of MoS2 to graphene is 1:2. The photocatalytic H2 evolution activity of the proposed MoS2/G-CdS composite was tested and compared in Na2S–Na2SO3 solution and lactic acid solution. A 1.8 mmol/h H2 evolution rate in lactic acid solution corresponding to an AQE of 28.1% at 420 nm is not only higher than the case in Na2S–Na2SO3 solution of 1.2 mmol/h but also much higher than that of Pt/CdS in lactic acid solution. The relative mechanism has been investigated. It...
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Citations
In-situ nanoarchitectonics of noble-metal-free g-C3N4@C-Ni/Ni2P cocatalyst with core-shell structure for efficient photocatalytic H2 evolution
Xingyan Liu,Youzhou He,Guangmei Jiang,Jiang Yao,Lei Tang,Chenghua Zhang,Weiwei Guo,Fukun Li,Linfeng You,Siqi Li,Xingyan Liu +10 more
TL;DR: In this paper, the noble-metal-free g-C3N4@carbon-Ni/Ni2P cocatalyst with retained core-shell nanostructure was in-situ fabricated via the successive annealing-phosphating method for efficient photocatalytic hydrogen production.
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Formation of TiO2@Carbon Core/Shell Nanocomposites from a Single Molecular Layer of Aromatic Compounds for Photocatalytic Hydrogen Peroxide Generation.
TL;DR: The carbon shells retard the re-consumption of the generated H2O2 by inhibiting the adsorption of H2 O2 on the surface of TiO2 nanoparticles, thereby improving the photocatalytic efficiency of H1O2 generation.
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Multi-layered MoS2 phototransistors as high performance photovoltaic cells and self-powered photodetectors
TL;DR: In this paper, the fabrication and optoelectronic properties of a single multilayer MoS2 sheet were reported, and it was shown that the thin MoS 2 showed a linear transport property while the thick MoS II showed diode characteristics with well-defined current rectification behavior.
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High-performance SERS substrate based on perovskite quantum dot–graphene/nano-Au composites for ultrasensitive detection of rhodamine 6G and p-nitrophenol
TL;DR: In this article, a perovskite quantum dot-graphene/nano-Au (PQD-G/Au) composite was designed using the combination of ligand-assisted reprecipitation and spinning coating techniques.
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CdS-Nanoparticles-Decorated Perpendicular Hybrid of MoS2 and N-Doped Graphene Nanosheets for Omnidirectional Enhancement of Photocatalytic Hydrogen Evolution
Shuqu Zhang,Longlu Wang,Yunxiong Zeng,Yuzi Xu,Yanhong Tang,Shenglian Luo,Yutang Liu,Chengbin Liu +7 more
TL;DR: In this paper, a hierarchical nano-architecture with integration of multiple active materials has been developed for highly efficient hydrogen evolution reaction (HER), by decorating a perpendicular hybrid of MoS2 and N-doped graphene nanosheets with CdS nanoparticles.
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