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Dual Effect in Fluorine‐Doped Hematite Nanocrystals for Efficient Water Oxidation
Author(s) -
Xie Junfeng,
Liu Weiwei,
Xin Jianping,
Lei Fengcai,
Gao Li,
Qu Haichao,
Zhang Xiaodong,
Xie Yi
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201701074
Subject(s) - hematite , nanocrystal , fluorine , doping , chemistry , dual (grammatical number) , materials science , chemical engineering , inorganic chemistry , nanotechnology , mineralogy , organic chemistry , optoelectronics , engineering , art , literature
Herein, excellent light absorption and oxygen‐evolving activity were simultaneously achieved by doping fluorine anions into hematite nanocrystals. Upon anion doping, the band structure of hematite can be effectively regulated, leading to the generation of defect levels between the band gap and remarkably increased visible light absorption. The activity for electrocatalytic oxygen evolution reaction (OER) of the hematite nanocrystals is enhanced after fluorine doping, where the doped hematite assists as an effective catalyst for photoelectrochemical water splitting. The optimization strategy proposed herein may shed light on the future design of photocatalysts for energy‐related applications.