化工进展2017，Vol.36Issue(2)：397-409,13.DOI:10.16085/j.issn.1000-6613.2017.02.001
α-Fe2O3光电催化分解水制备氢气研究进展
Hematite photoanodes for solar water splitting
摘要
Abstract
Photoelectrochemical cell is able to turn sunlight into stored energy conveniently in the form of hydrogen,and the stable and low-cost photoanode catalyst is crucial in this device. Hematite is considered as one of the most promising photoanode catalysts due to its suitable band gap,high theoretical solar to hydrogen efficiency,chemical stability under illumination and rich storage in earth. However,the poor conductivity,short photo-generated charge carrier lifetime and high turn-on voltage have limited the performance improvement of hematite severely. This review introduces the basic mechanism of photoelectrocatalysis and energy band excitation,then it summarizes the synthesis of nanostructureα-Fe2O3 and the improvements on the photoelectrocatalysis property of hematite in recent years,including conductivity enhancement by element doping,oxygen evolution overpotential or trap concentration reduction by surface treatment,and photo-induced voltage or specific area increase by coupling with other materials. The future developing perspectives of hematite are also presented,and multi-modified technologies are considered as important ways to improve the photocurrent density.关键词
赤铁矿/太阳能/光电催化/水解/氢气Key words
hematite/solar energy/photoelectrocatalysis/hydrolysis/hydrogen分类
化学化工引用本文复制引用
王开放,刘光,高旭升,贺冬莹,李晋平..α-Fe2O3光电催化分解水制备氢气研究进展[J].化工进展,2017,36(2):397-409,13.基金项目
国家自然科学基金（51402205）及山西省基础研究计划（2015021058）项目。 （）
