Sn/Sn3O4-x heterostructure rich in oxygen vacancies with enhanced visible light photocatalytic oxidation performance
来源期刊：International Journal of Minerals Metallurgy and Materials2021年第1期
论文作者：Rui-qi Yang Na Liang Xuan-yu Chen Long-wei Wang Guo-xin Song Yan-chen Ji Na Ren Ya-wei Lü Jian Zhang Xin Yu
文章页码：150 - 159
摘 要：Sn3O4, a common two-dimensional semiconductor photocatalyst, can absorb visible light.However, owing to its rapid recombination of photogenerated electron-hole pairs, its absorption is not sufficient for practical application.In this work, a Sn nanoparticle/Sn3O4-x nanosheet heterostructure was prepared by in situ reduction of Sn3O4 under a H2 atmosphere.The Schottky junctions formed between Sn and Sn3O4-x can enhance the photogenerated carrier separation ability.During the hydrogenation process, a portion of the oxygen in the semiconductor 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 compatibility 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.
Rui-qi Yang1，Na Liang1，Xuan-yu Chen1，Long-wei Wang1，Guo-xin Song1，Yan-chen Ji1，Na Ren1，Ya-wei Lü2，Jian Zhang3，Xin Yu1
1. Institute for Advanced Interdisciplinary Research(IAIR), University of Jinan2. School of physics and electronics, Hunan University3. Institute Charles Gerhardt, UMR 5253, CNRS-UM-ENSCM, Université de Montpellier
摘 要：Sn3O4, a common two-dimensional semiconductor photocatalyst, can absorb visible light.However, owing to its rapid recombination of photogenerated electron-hole pairs, its absorption is not sufficient for practical application.In this work, a Sn nanoparticle/Sn3O4-x nanosheet heterostructure was prepared by in situ reduction of Sn3O4 under a H2 atmosphere.The Schottky junctions formed between Sn and Sn3O4-x can enhance the photogenerated carrier separation ability.During the hydrogenation process, a portion of the oxygen in the semiconductor 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 compatibility 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.
关键词：
