期刊
ACS APPLIED ENERGY MATERIALS
卷 1, 期 4, 页码 1400-1407出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.8b00030
关键词
interface engineering artificial photosynthesis; two-dimensional nanojunction; hydrogen production; carrier separation
资金
- National Natural Science Foundation of China [51772071, 51502068, 61504063, 51572065]
- Zhejiang Provincial Natural Science Foundation of China [LQ16B030002]
- Natural Science Foundation of Jiangsu Higher Education Institutions of China [15KJB430023]
- Zhejiang Provincial Natural Science Foundation for Distinguished Young Scholars [LR15E020001]
Graphitic carbon nitride (g-C3N4) is a promising photocatalyst for solar H-2 generation, but the practical application of g-C3N4 is still limited by the low separation efficiency of photogenerated charge carriers. Herein, we report the construction of ternary g-C3N4/graphene/MoS2 two-dimensional nanojunction photocatalysts for enhanced visible light photocatalytic H-2 production from water. As demonstrated by photoluminescence and transient photocurrent studies, the intimate two-dimensional nanojuction can efficiently accelerate the charge transfer, resulting in the high photocatalytic activity. The g-C3N4/graphene/MoS2 composite with 0.5% graphene and 1.2% MoS2 achieves a high H-2 evolution rate of 317 mu mol h(-1) g(-1), and the apparent quantum yield reaches 3.4% at 420 nm. More importantly, the ternary g-C3N4/graphene/MoS2 two-dimensional nanojunction photocatalyst exhibits much higher photocatalytic activity than the optimized Pt-loaded g-C3N4 photocatalyst.
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