One-pot synthesis of CdS-MoS2/RGO-E nano-heterostructure with well-defined interfaces for efficient photocatalytic H2 evolution

被引:46
作者
Yin, Xing-Liang [1 ]
Li, Lei-Lei [1 ]
Li, Da-Cheng [1 ]
Dou, Jian-Min [1 ]
机构
[1] Liaocheng Univ, Sch Chem & Chem Engn, Shandong Prov Key Lab Chem Energy Storage & Novel, Liaocheng 252059, Shandong, Peoples R China
基金
中国国家自然科学基金;
关键词
One-pot method; Water splitting; Photocatalysis; Hydrogen evolution; Graphene modification; REDUCED GRAPHENE OXIDE; HYDROGEN-EVOLUTION; COMBUSTION SYNTHESIS; CDS NANORODS; COUNTER ELECTRODE; MOS2; NANOSHEETS; COCATALYST; HYBRID; SEMICONDUCTOR; ENHANCEMENT;
D O I
10.1016/j.ijhydene.2018.09.047
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Quality of interfaces is a key factor determining photoexcited charge transfer efficiency, and in turn photocatalytic performance of heterostructure photocatalysts. In this paper, we demonstrated CdS-MoS2/RGO-E (RGO-E: reduced graphene oxide modified by ethylenediamine) nanohybrid synthesized by using a facile one-pot solvethermal method in ethylenediamine, with CdS nanoparticles and MoS2 nanosheets intimately growing on the surface of RGO. This unique high quality heterostructure facilitates charge separation and transportation, and thus effectively suppressing charge recombination. As a result, the CdS-MoS2/RGO-E exhibits a state-of-the-art H-2 evolution rate of 36.7 mmol g(-1) h(-1) and an apparent quantum yield of 30.5% at 420 nm, which is the advanced performance among all the same-type photocatalysts (see Table S1), and far exceeding that of bare CdS by higher than 104 times. This synthesis strategy gives an inspiration for the synthesis of other compound catalysts, and higher performance photocatalyst may be obtained. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:20382 / 20391
页数:10
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