期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 42, 期 5, 页码 2924-2930出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2016.10.116
关键词
Nanocomposites; Semiconductor; Photocatalysis; Core-shell
资金
- National Research Foundation, Prime Ministers Office, Singapore under its Competitive Research Programme [NRF-CRP11-2012-01]
- Nanyang Technological University
- National Science and Technology Major Project of the Ministry of Science and Technology of China [2016YFB0401702]
- Shenzhen Innovation Project [JCYJ20160301113356947, KC2014JSQN0011A, JCYJ20150630145302223]
Core-shell CdS@ZnS nanocomposites are directly grown on indium tin oxide (ITO) substrate without conductive additives and contamination of organic surfactants via a onestep hydrothermal method. Performed CdS@ZnS core-shell nanocomposites are evolved from ZnO nanowires by reacting with CdS precusors at 100 degrees C for 5 h. The shell thickness could be tuned by varying the CdS precursor, and the porous structure with 40 nm shell exhibited improved hydrogen evolution of around 5700 pmol cm(-2), 1.5 times higher than that of structure with 20 nm shell. Protective ZnS shell can effectively passivate the surface trap states of the CdS cores, greatly improving the photocatalytic activities of the CdS@ZnS core-shell architecture. The core-shell heterostructure with the staggered band alignments facilitates the separation and transport of the photoexcited charge carriers, and the localized acceptor states induced by intrinsic defects provide pathway for carriers transport. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据