文献类型：期刊文献

英文题名：The effect of fluorine doping on the photocatalytic properties of hematite for water splitting

作者：Zhu, Yongxiang[1];Xu, Jie[1];Jiang, Hui[1];Niu, Dongfang[1];Zhang, Xinsheng[1];Hu, Shuozhen[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2018

卷号：20

期号：41

起止页码：6430

外文期刊名：CRYSTENGCOMM

收录：;EI(收录号：20184406005581);WOS:【SCI-EXPANDED(收录号:WOS:000448408800009)】；

基金：This work was supported by the National Key Research and Development Program of China (Grant No. 2017YFB0307502 and Grant No. 2017YFB0307500), the 111 Project of China (No. B08021), the Collaborative Innovation Centre for Petrochemical New Materials, Anqing, Anhui, P.R. China (No. 246011), and the Shanghai Pujiang Program (No. 18PJ1402000).

语种：英文

外文关键词：Charge transfer - Carrier concentration - Fluorine - Photocatalytic activity - Electrons

摘要：Fluorine-doped hematite samples with different concentrations were successfully synthesized through a hydrothermal method. The 3% F-doped hematite is found to be the optimal catalyst in this study which has a [110]-oriented structure and a remarkable photocurrent density of 1.24 mA cm(-2) at 1.23 V vs. RHE under one sun irradiation, which is about ten times higher than that of bare hematite (0.12 mA cm(-2)). F doping also reduces the recombination of free electron-hole pairs. The shift of the Fermi level position caused by F doping leads to the decrease of charge-transfer resistance in the bulk (R-1) and interface (R-2) and the increase of charge carrier concentration (N-d). In addition, F doping contributes to the shadow defect. All the results indicate that 3% F is the best doping concentration.