稀土Pr掺杂BiOBr的制备及其光催化性能研究  

Study on the Preparation and Photocatalytic Properties of Pr Doped BiOBr

作　　者：施梓胜 章芬 王玲玲 陈玄烨 陈伟 胡银[1] 林城杰 邵伟 SHI Zisheng;ZHANG Fen;WANG Lingling;CHEN Xuanye;CHEN Wei;HU Yin;LIN Chengjie;SHAO Wei(Institute of Applied Chemistry,Jiangxi Academy of Sciences,Nanchang 330096,China;School of Environment and Chemical Engineering,Nanchang Hangkong University,Nanchang 330063,China)

机构地区：[1]江西省科学院应用化学研究所,江西南昌330096 [2]南昌航空大学环境与化学工程学院,江西南昌330063

出　　处：《生物化工》2023年第2期120-123,136,共5页Biological Chemical Engineering

基　　金：国家自然科学基金地区基金项目(22062009);江西省主要学科学术和技术带头人培养计划—青年人才项目(20204BCJ23008);江西省自然科学基金面上项目(20212BAB203038);江西省科学院杰出青年人才培育计划项目(2021YSBG50001);江西省科学院重点研发计划项目(2021YSBG22002)。

摘　　要：通过一步水热法制备了Pr-BiOBr复合光催化剂,采用X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、X射线光电子能谱(XPS)对所制备的材料进行表征,以罗丹明B(RhB)作为模拟污染物,考察了不同掺杂比的Pr-BiOBr的光催化性能。结果表明,在吸附和可见光照射的协同作用下,60 min时1.0%Pr-BiOBr对RhB的降解率为97%。XPS表明1.0%Pr的掺杂引起BiOBr氧空位的增加,可以促进光催化过程中的光生电子-空穴对的分离。本工作为探索和设计可见光响应的高性能光催化剂提供了一种重要的策略。The Pr-BiOBr composite photocatalysts are prepared by a one-step hydrothermal method,and the prepared materials are characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM)and X-ray photoelectron spectroscopy(XPS).The photocatalytic performances of Pr-BiOBr with different doping ratios are investigated using Rhodamine B(RhB)as a model pollutant.The results show that the degradation efficiency of 1.0%Pr-BiOBr for RhB removal rate is about 97%in 60 minutes under the synergistic effect of adsorption and visible light irradiation.XPS results show that the doping of 1.0%Pr can cause an increase in BiOBr oxygen vacancies,which can promote the separation of photo-generated electron-hole pairs in the photocatalytic process.This work provides an important strategy for exploring and designing high-performance photocatalysts with visible light response.

关 键 词：镨 BiOBr 罗丹明B 可见光降解 氧空位 

分 类 号：X52[环境科学与工程—环境工程] O643.36[理学—物理化学]