Sn/Sn3O4?x heterostructure rich in oxygen vacancies with enhanced visible light photocatalytic oxidation performance

• 作者: Guo-xin Song Jian Zhang Long-wei Wang Na Liang Na Ren Rui-qi Yang Xin Yu Xuan-yu Chen Ya-wei Lü Yan-chen Ji
• 来源期刊: 矿物冶金与材料学报
• 年，卷（期）: 2021,（1）
• 页码范围: 150-159
• 页数: 10页
• 语种: 英文

摘要

Sn3O4,a common two-dimensional semiconductor photocatalyst,can absorb visible light.However,owing to its rapid recombina-tion of photogenerated electron?hole pairs,its absorption is not sufficient for practical application.In this work,a Sn nanoparticle/Sn3O4?x nanosheetheterostructurewaspreparedbyin situreductionofSn3O4underaH2atmosphere.TheSchottkyjunctionsformedbetweenSnand Sn3O4?x can enhance the photogenerated carrier separation ability.During the hydrogenation process,a portion of the oxygen in the semicon-ductor can be extracted by hydrogen to form water,resulting in an increase in oxygen vacancies in the semiconductor.The heterostructure showed the ability to remove Rhodamine B.Cell cytocompatibility experiments proved that Sn/Sn3O4?x can significantly enhance cell compat-ibility and reduce harm to organisms.This work provides a new method for the fabrication of a Schottky junction composite photocatalyst rich in oxygen vacancies with enhanced photocatalytic performance.