Ag2O/NaNbO3纳米复合材料的制备及其光催化性质  

Preparation of Ag2O/NaNbO3 Nanocomposite and its Photocatalytic Property

作　　者：李强 李世平 卢笑笑 马相东 韩浩 王康 LI Qiang;LI Shi-ping;LU Xiao-xiao;MA Xiang-dong;HAN Hao;WANG Kang(School of Physics and Electronic Information,Huaibei Normal University,Huaibei 235000,China)

机构地区：[1]淮北师范大学物理与电子信息学院,安徽淮北235000

出　　处：《宜春学院学报》2020年第3期27-30,共4页Journal of Yichun University

基　　金：安徽高校自然科学研究项目“InP基三明治结构异质结光阳极的制备与太阳光分解水制氢性能研究”(KJ2018A0394);安徽自然科学基金“三维InP/金属颗粒纳米孔阵列异质结的构建与太阳光分解水制氢性能研究”(1908085QF293)。

摘　　要：采用共沉淀法合成了Ag2O/NaNbO3复合光催化剂,并利用X射线衍射(XRD)和扫描电子显微镜(SEM)分别对其物相和形貌进行表征,用紫外可见漫反射光谱仪对其光学性质进行研究。在可见光下以罗丹明B(RhB)为目标降解物,检测了Ag2O/NaNbO3光催化剂的光催化性能。结果表明,与纯的Ag2O和纯的NaNbO3相比,Ag2O/NaNbO3复合光催化剂具有较高的光催化活性,其光催化活性的提升可能归结于p-n结的形成,使得光生电子空穴对的复合机率大大降低。Ag2O/NaNbO3 composite photocatalysts was prepared via coprecipitation method.The XRD and SEM were used to characterize phase composition and morphologies.UV-Vis spectrophotometer was utilized to study the optical properties of the catalysts.The photocatalytic property of all catalysts was tested by removal of Rhodamine B(RhB)solution irradiated by visible light.The results showed that the degradation activities of composite samples are much higher than those of pure Ag2O and NaNbO3.The improvement of the photocatalytic activity could be mainly attributed to the effective separation of photo-generated carriers due to the formed p-n junction.

关 键 词：铌酸钠 氧化亚银 光催化降解 

分 类 号：O643.32[理学—物理化学]