2024年9月27日，ACS 旗下的国际知名能源期刊《Nano Letters》在线发表了云南师范大学能源与环境科学学院杨培志教授课题组等的最新研究成果《Lead-Free Cs2AgBiBr6/TiO2 S-Scheme Heterojunction for Efficient Photocatalytic Antibiotic Rifampicin Degradation》。云南师范大学能源与环境科学学院为第一单位兼通讯作者单位，杨培志教授为通讯作者。合作者为中国科学院上海高性能陶瓷和超微结构国家重点实验室Qin Peng、上海交通大学材料科学与工程学院讲席教授黄富强。

Abstract

Exploring efficient and stable halide perovskite-based photocatalysts is a great challenge due to the balance between the photocatalytic performance, toxicity, and intrinsic chemical instability of the materials. Here, the environmentally friendly lead-free perovskite Cs2AgBiBr6 confined in the mesoporous TiO2 crystal matrix has been designed to enhance the charge carrier extraction and utilization for efficient photocatalytic rifampicin degradation. The as-prepared Cs2AgBiBr6/TiO2 catalyst was stable in air for over 500 days. An S-scheme heterojunction was formed between the (004) plane of Cs2AgBiBr6 and the (101) plane of TiO2 through the Bi–O–Br bonds. The built-in electric field at the interface efficiently promoted the photoinduced charge separation and carrier extraction. The Cs2AgBiBr6/TiO2-200 showed a 92.83% degradation efficiency of rifampicin within 80 min under simulated sunlight illumination (AM 1.5G 100 mW cm–2). This work offers an effective way for the construction of halide perovskite-based photocatalysts with high photocatalytic performance, good stability, and low toxicity simultaneously.

扩展阅读：

云师大能环学院杨培志教授在top期刊《Rare Metals》上发表最新研究成果

云师大能环学院杨培志教授在top期刊《Carbon》上发表最新研究成果

云师大能环学院杨培志教授课题组在《Advanced Functional Materials》上发表最新研究成果

云师大能环学院杨培志教授课题组与山东科技大学段加龙和唐群委合作在《Carbon Energy》上发表最新研究成果

云师大杨培志教授课题组在top期刊《Chemical Engineering Journal》发表最新研究成果

我校杨培志研究员研究成果荣获云南省科学技术一等奖

云师大杨培志教授与中国海洋大学合作在《NANO ENERGY》上刊文

云南师范大学光电材料研究代表之一 杨培志 教授

云南师范大学光电材料研究代表之一 杨培志 教授