物理化学学报2025,Vol.41Issue(12):158-168,11.DOI:10.1016/j.actphy.2025.100190
界面工程与氧空位协同策略促进Cd0.5Zn0.5S/BiOBr S型异质结高效光催化去除抗生素
Interfacial engineering of Cd0.5Zn0.5S/BiOBr S-scheme heterojunction with oxygen vacancies for effective photocatalytic antibiotic removal
摘要
Abstract
The construction of S-scheme heterojunction photocatalysts has emerged as a promising strategy to address the urgent need for efficient antibiotic wastewater remediation.However,persistent challenges in achieving interfacial intimacy and precise charge transfer regulation between semiconductors have hindered their practical implementation.In this work,we engineered a hierarchical Cd0.5Zn0.5S/BiOBr S-scheme heterojunction via a controlled solvothermal synthesis,where BiOBr microspheres serve as the core,and Cd0.5Zn0.5S nanoparticles form a conformal shell.This architecture ensures maximal interfacial contact and directional charge dynamics,critical for optimizing photocatalytic efficiency.The optimized heterojunction exhibits superior catalytic performance,achieving tetracycline(TC)degradation rate constants 3.3-and 1.6-fold greater than pristine BiOBr and Cd0.5Zn0.5S,respectively.This enhancement stems from the synergistic interplay of efficient charge separation and preserved redox capacities inherent to the S-scheme mechanism.Furthermore,the TC degradation process and mechanism were elucidated.This study provides a new perspective on developing defective S-scheme heterojunctions for antibiotic wastewater purification with high performance.关键词
内建电场/Cd0.5Zn0.5S/BiOBr/S型异质结/氧空位/抗生素降解/光催化/毒性分析Key words
Internal electric field/Cd0.5Zn0.5S/BiOBr/S-scheme heterojunction/Oxygen vacancies/Antibiotic degradation/Photocatalysis/Toxicity analysis分类
化学化工引用本文复制引用
Deyun Ma,Fenglan Liang,Qingquan Xue,Yanping Liu,Chunqiang Zhuang,Shijie Li..界面工程与氧空位协同策略促进Cd0.5Zn0.5S/BiOBr S型异质结高效光催化去除抗生素[J].物理化学学报,2025,41(12):158-168,11.基金项目
This work has been financially supported by the Natural Science Foundation of Zhejiang Province(LY20E080014),the National Natural Science Foundation of China(51708504),and the Open Cooperation Foundation of the Department of Chemical Science of Henan University(DCSHENU2413). 浙江省自然科学基金(LY20E080014),国家自然科学基金(51708504)及河南大学化学学科开放合作基金(DCSHENU2413)资助 (LY20E080014)