新型可见光光电材料NiNb2O6的合成及其光电化学性质  

Preparation and Photoelectrochemical Property of a Novel Visible-light Photovoltaic Material NiNb_2O_6

作　　者：张妍[1] 于建强[1] 高行龙[1] 孙红[1] 郭培志[1] 李洪亮[1] 赵修松[1] 

机构地区：[1]青岛大学纤维新材料与现代纺织重点实验室,青岛大学化学化工与环境学院,青岛266071

出　　处：《无机化学学报》2011年第1期141-144,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.20973097);国家重大基础研究(973)计划(No.2009CB220000);催化基础国家重点实验室开放基金(No.N-06-18);山东省“泰山学者”科研经费资助项目

摘　　要：本文报道了"软化学"法合成得到的新型光电转换材料NiNb2O6的合成及其在可见光照射下的光电化学性质。采用X-射线衍射(XRD)、扫描电子显微镜(SEM)以及紫外-可见漫反射谱(DRS)等手段研究了合成材料的晶型结构、形貌以及光物理性质。结果表明,该材料具有与Nb2O5完全不同的新型结构,且具有两个明显的吸收带,相应的禁带宽分别为3.02和2.30 eV,具有较好的可见光(λ>420 nm)吸收性能。在可见光下照射下NiNb2O6薄膜光电极上观察到有光电流的产生,表明其具有较好的光电转换性能。This paper reports the synthesis and photoelectrochemical property of a novel visible-light photovoltaic material NiNb2O6,which was prepared by a soft-chemistry approach.The structure,morphology and photophysical properties were investigated by X-ray diffraction（XRD）,scanning electron microscopy（SEM） and diffuse reflectance spectroscopy（DRS）.The results suggested that the structure of the material differed absolutely to that of Nb2O5.Two distinctive absorption bands,corresponding to band-gap of about 3.02 and 2.03 eV respectively,were observed.Intensive photocurrent was observed over the film fabricated from the synthesized NiNb2O6 under the visible-light irradiation（λ420 nm）,showing a good photo electrochemical property.The results indicated that NiNb2O6 is an excellent photovoltaic conversion material.

关 键 词：铌酸镍 可见光 光电转换材料 “软化学法” 光电化学 

分 类 号：O614.512[理学—无机化学] O614.813[理学—化学]