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Bi2Sn2O7改性ZnO微球纳米复合材料的制备及其光催化性能研究

发表时间:2016-01-15  浏览量:3040  下载量:1138
全部作者: 邢永雷,阙文修
作者单位: 西安交通大学电子与信息工程学院,电子材料研究所
摘 要: 利用水热法和水解法制备出Bi2Sn2O7(BSO)和ZnO微球,将其按照不同比例进行混合,通过煅烧制备出不同比例的复合材料。利用透射电子显微镜(transmission electron microscope,TEM)、紫外 可见吸收(ultraviolet visible,UV-Vis)光谱和光致发光(photoluminescence,PL)光谱等不同表征方法对材料的形貌和光学性能进行表征,并比较不同比例的BSO对BSO-ZnO复合材料光催化性能的影响。结果表明,12.5BSO-ZnO复合材料表现出最好的光催化性能,这是由于材料中异质结结构的存在使光生电子和空穴达到了有效分离。
关 键 词: 光学;Bi2Sn2O7;ZnO;异质结;罗丹明B;光催化性能
Title: Fabrication of bismuth stannate modified ZnO microspheres for enhanced photocatalytic activity
Author: XING Yonglei, QUE Wenxiu
Organization: Electronic Materials Research Laboratory, School of Electronic and Information Engineering, Xi’an Jiaotong University
Abstract: ZnO microspheres synthesized by using a hydrolysis method were modified with different contents of Bi2Sn2O7 (BSO) which was prepared by a hydrothermal method. Transmission electron microscope (TEM), ultraviolet visible (UV-Vis) and photoluminescence (PL) were employed to study morphological, optical and photocatalytic properties of the BSO-ZnO heterostructures. Effects of BSO contents on photocatalytic activities of the as-prepared samples were also investigated, and the highest photocatalytic efficiency was observed for the 12.5BSO-ZnO sample. Enhanced photocatalytic efficiency was ascribed to enhanced separation of the photogenerated electrons and holes, due to the presence of the BSO-ZnO heterojunction.
Key words: optics; Bi2Sn2O7; ZnO; heterojunction; Rhodamine B; photocatalytic activity
发表期数: 2016年1月第1期
引用格式: 邢永雷,阙文修. Bi2Sn2O7改性ZnO微球纳米复合材料的制备及其光催化性能研究[J]. 中国科技论文在线精品论文,2016,9(1):39-43.
 
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