Self-Assembled Au/CdSe Nanocrystal Clusters for Plasmon-Mediated Photocatalytic Hydrogen Evolution

Advanced Materials
Run ShiTierui Zhang

Abstract

Plasmon-mediated photocatalytic systems generally suffer from poor efficiency due to weak absorption overlap and thus limited energy transfer between the plasmonic metal and the semiconductor. Herein, a near-ideal plasmon-mediated photocatalyst system is developed. Au/CdSe nanocrystal clusters (NCs) are successfully fabricated through a facile emulsion-based self-assembly approach, containing Au nanoparticles (NPs) of size 2.8, 4.6, 7.2, or 9.0 nm and CdSe quantum dots (QDs) of size ≈3.3 nm. Under visible-light irradiation, the Au/CdSe NCs with 7.2 nm Au NPs afford very stable operation and a remarkable H2 -evolution rate of 73  mmol  gCdSe-1 h-1 (10× higher than bare CdSe NCs). Plasmon resonance energy transfer from the Au NPs to the CdSe QDs, which enhances charge-carrier generation in the semiconductor and suppresses bulk recombination, is responsible for the outstanding photocatalytic performance. The approach used here to fabricate the Au/CdSe NCs is suitable for the construction of other plasmon-mediated photocatalysts.

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Citations

May 29, 2018·Chemical Communications : Chem Comm·Xin YuHong Liu
Jun 20, 2018·Advanced Materials·Bin CaiAlexander Eychmüller
Jul 24, 2018·Advanced Materials·Lei WangYujie Xiong
Jul 25, 2018·Advanced Materials·Wenjing XuYadong Yin
Jan 3, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Feifei MeiChanghao Liang
Aug 2, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Lang PeiZhigang Zou
May 21, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Xuanyu YueHu Jiang
Jun 11, 2020·Chemical Communications : Chem Comm·Xiaoli ZhengQun Xu
Jul 14, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Wen-Chao GengYong-Jun Li
Oct 4, 2018·Nature Communications·Zhaoyong LinGuowei Yang
Nov 3, 2020·Chemical Society Reviews·Xu-Bing LiLi-Zhu Wu
Jan 19, 2021·Advanced Materials·Chuanbiao BieJiaguo Yu
Apr 22, 2021·Proceedings of the National Academy of Sciences of the United States of America·Zhuo ZhuJun Chen
Aug 30, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Jianhai WangYuanjian Zhang
Jan 18, 2018·ACS Applied Materials & Interfaces·Ling WangJingcheng Hao
Nov 21, 2017·Journal of the American Chemical Society·Jun GuoZhiyong Tang
Jul 11, 2018·Journal of the American Chemical Society·Peng-Peng WangMin Ouyang

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