Premium
Interstitial P‐Doped CdS with Long‐Lived Photogenerated Electrons for Photocatalytic Water Splitting without Sacrificial Agents
Author(s) -
Shi Rui,
Ye HuiFang,
Liang Fei,
Wang Zhuan,
Li Kai,
Weng Yuxiang,
Lin Zheshuai,
Fu WenFu,
Che ChiMing,
Chen Yong
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201705941
Subject(s) - photocatalysis , materials science , doping , electron , photochemistry , redox , water splitting , impurity , fermi level , hydrogen , optoelectronics , catalysis , chemistry , metallurgy , physics , biochemistry , organic chemistry , quantum mechanics
Photocatalytic hydrogen evolution from pure water is successfully realized by using interstitial P‐doped CdS with rich S vacancies (CdS‐P) as the photocatalyst in the absence of any electron sacrificial agents. Through interstitial P doping, the impurity level of S vacancies is located near the Fermi level and becomes an effective electron trap level in CdS‐P, which can change dynamic properties of photogenerated electrons and thus prolong their lifetimes. The long‐lived photogenerated electrons are able to reach the surface active sites to initiate an efficient photocatalytic redox reaction. Moreover, the photocatalytic activity of CdS‐P can be further improved through the loading of CoP as a cocatalyst.