期刊
DALTON TRANSACTIONS
卷 49, 期 27, 页码 9282-9293出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0dt01643h
关键词
-
资金
- National Natural Science Foundation of China [61575225, 11074312, 11374377, 11474174, 11404414]
- Fujian Key Laboratory of Functional Marine Sensing Materials, Minjiang University [MJUKF-FMSM201912]
- Undergraduate Research Training Program of Minzu University of China [URTP2018110045, URTP2018110046, URTP2018110028]
Effective separation of charge carriers and substantial prolongation of charge carrier lifetime are two vital issues for a photoanode to achieve highly efficient photoelectrochemical (PEC) hydrogen generation. Herein, a Cu2O-nanoparticle-sensitized TiO2/CdS (TiO2/CdS/Cu2O) nanowire array photoanode is fabricatedviasubtly combining successive ionic layer adsorption and reaction with a chemical bath deposition method. Both the type-II band alignment with a stair-like structure and a p-n junction are integrated into this ternary photoanode. The fabricated photoanode shows a significant enhancement in the PEC H(2)production with 4.3% efficiency. The measurements of light absorption, photoluminescence and electrochemical spectra undoubtedly demonstrate that the enhanced PEC H(2)generation is ascribed to the remarkable enhancement of visible-light absorbing ability, efficient space charge separation and substantial prolongation of charge carrier lifetime, which are achieved by the synergetic effects of the type-II band alignment with a stair-like structure and the p-n junction. The enhanced PEC H(2)generation demonstrates the potential of the TiO2/CdS/Cu2O nanowire arrays as a photoanode to efficiently convert solar energy into chemical fuels.
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