摘要
通过水热的方法合成了α-Fe2O3光电极.通过X射线衍射(XRD)、紫外-可见(UV-vis)吸收光谱、扫描电镜(SEM)对α-Fe2O3光阳极进行表征,并对α-Fe2O3光阳极进行了光电化学性能表征.为了提高α-Fe2O3光阳极的光电性能,对制备α-Fe2O3光阳极的条件进行了优化.光电化学测试的结果表明:电化学表面处理能够提高α-Fe2O3光阳极的光电化学性能,并分析了α-Fe2O3光阳极光电性能增加的机理.电化学表面处理有利于光生空穴传递并且减少了电子-空穴对的复合几率,从而提高了α-Fe2O3光阳极的光电性能.
Hematite(α-Fe2 O3) photoanode has been obtained through hydrothermal method. The physical and photophysical properties of the hematite photoanode were investigated by X-ray diffraction(XRD), UV-vis absorption spectroscopy, scanning electron microscopy(SEM) and the photo-electrochemical performance has been also evaluated. In terms of maximizing the photoelectrochemical performances of the hematite photoanodes,the preparation conditions were optimized. The photoelctrochemical performances of hematite photoanode can be improved by the electrochemical surface pretreatment, and a possible mechanism has been proposed to explain the reason for the improvement of photoelctrochemical performances, which is attributed to the favorable photohole transfer and the reduced electron-hole recombination.
作者
万丽娟
杨明
张丽
WAN Li-juan;YANG Ming;ZHANG Li(Center for Energy Conservation and Emission Reduction,Nanjing Vocational Institute of Transport Technology,Nanjing 211188,China;Jiangsu Engineering Technology Research Center for Energy Conservation and Emission Reduction of Transportation,Nanjing 211188,China;School of Transportation,Southeast University,Nanjing 210096,China)
出处
《云南大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第2期319-324,共6页
Journal of Yunnan University(Natural Sciences Edition)
基金
江苏省高等学校自然科学研究面上项目(19KJB610014)
南京交通职业技术学院科研项目(JZ1912).
关键词
氧化铁
光阳极
水热法
hematite
photoanode
hydrothermal method
