物理化学学报 >> 2025, Vol. 41 >> Issue (12): 100190.doi: 10.1016/j.actphy.2025.100190

论文 上一篇    

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

马德运1,†, 梁凤兰1,†, 薛清泉2,*(), 刘艳萍3, 庄春强4,*(), 李世杰3,5,*()   

  1. 1 肇庆学院食品与制药工程学院, 生命科学学院, 广东 肇庆 526061
    2 浙江省污染暴露与健康干预重点实验室, 浙江树人大学交叉科学研究院, 浙江 杭州 310015
    3 浙江省港口石油化工污染控制重点实验室, 国家海洋设施养殖工程技术研究中心, 浙江海洋大学, 浙江 舟山 316022
    4 北京工业大学先进材料微观结构与性能研究所, 北京 100124
    5 河南省废弃物资源能源化工程技术研究中心, 河南大学能源科学与技术学院, 河南 郑州 450046
  • 收稿日期:2025-08-10 修回日期:2025-09-19 录用日期:2025-09-19 发布日期:2025-10-23
  • 通讯作者: Email: qingquanxue@zjsru.edu.cn (薛清泉)lishijie@zjou.edu.cn (李世杰)chunqiang.zhuang@bjut.edu.cn (庄春强)
  • 作者简介:

    †These authors contributed equally to this work.

  • 基金资助:
    浙江省自然科学基金(LY20E080014); 国家自然科学基金(51708504); 河南大学化学学科开放合作基金(DCSHENU2413)

Interfacial engineering of Cd0.5Zn0.5S/BiOBr S-scheme heterojunction with oxygen vacancies for effective photocatalytic antibiotic removal

Deyun Ma1, Fenglan Liang1, Qingquan Xue2,*(), Yanping Liu3, Chunqiang Zhuang4,*(), Shijie Li3,5,*()   

  1. 1 School of Food and Pharmaceutical Engineering, School of Life Sciences, Zhaoqing University, Zhaoqing 526061, Guangdong Province, China
    2 Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou 310015, Zhejiang Provincne, China
    3 Zhejiang Key Laboratory of Pollution Control for Port-Petrochemical Industry, National Engineering Research Center for Marine Aquaculture, Zhejiang Ocean University, Zhoushan 316022, Zhejiang Province, China
    4 Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China
    5 Henan Engineering Research Center of Resource & Energy Recovery from Waste, School of Energy Science and Technology, Henan University, Zhengzhou 450046, Henan Province, China
  • Received:2025-08-10 Revised:2025-09-19 Accepted:2025-09-19 Published:2025-10-23
  • Contact: Email: qingquanxue@zjsru.edu.cn (Qingquan Xue)lishijie@zjou.edu.cn (Shijie Li)chunqiang.zhuang@bjut.edu.cn (Chunqiang Zhuang)
  • Supported by:
    the Natural Science Foundation of Zhejiang Province(LY20E080014); the National Natural Science Foundation of China(51708504); the Open Cooperation Foundation of the Department of Chemical Science of Henan University(DCSHENU2413)

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摘要：

构建S型异质结光催化剂已成为解决抗生素废水污染，实现其高效修复的重要策略。然而，半导体间界面接触紧密性不足与电荷转移过程难以精确调控等问题，仍然制约其实际应用。本研究通过可控溶剂热合成法构建了分级Cd0.5Zn0.5S/BiOBr S型异质结，其中BiOBr微球作为核芯，Cd0.5Zn0.5S纳米颗粒锚定在其表面形成共形外壳。这种结构确保了最大界面接触与定向电荷传输，对优化光催化效率至关重要。优化后的异质结展现出卓越的催化性能，其四环素(TC)降解速率常数分别是纯相BiOBr和Cd0.5Zn0.5S的3.3倍和1.6倍。这种增强源于S型机制固有的高效电荷分离与保留氧化还原能力的协同作用。此外，本研究阐明了TC降解过程与机制，为开发高性能缺陷型S型异质结用于抗生素废水净化提供了新视角。

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

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.

Key words: Internal electric field, Cd0.5Zn0.5S/BiOBr, S-scheme heterojunction, Oxygen vacancies, Antibiotic degradation, Photocatalysis, Toxicity analysis