首页> 中文期刊>中南大学学报 >界面工程调控铁电极化增强异质结构BaTiO_(3)@TiO_(2)光催化性能

界面工程调控铁电极化增强异质结构BaTiO_(3)@TiO_(2)光催化性能

     

摘要

采用水解沉淀结合水热法成功合成光催化活性增强的铁电-BaTiO_(3)@光电-TiO_(2)纳米杂化光催化剂(BaTiO_(3)@TiO_(2))。与纯TiO_(2)、纯BaTiO_(3)和BaTiO_(3)/TiO_(2)机械混合物相比,采用异质结构的BaTiO_(3)@TiO_(2)降解罗丹明B(RhB)的光催化活性和循环稳定性得到提升,其光催化降解效率是纯TiO_(2)的1.7倍,纯BaTiO_(3)的7.2倍。光催化降解效率的提升与光电TiO_(2)、铁电BaTiO_(3)及两者界面结构的协同效应相关。介孔微结构的TiO_(2)因高的比表面积而具备优异的光催化活性。纳米BaTiO_(3)因铁电极化产生的内建电场及BaTiO_(3)与TiO_(2)间紧密的界面相互作用而有效地促进光生载流子的分离和传输。通过调控界面工程将促进具有优异光催化性能异质结型光催化剂的设计与开发。

著录项

  • 来源
    《中南大学学报》|2021年第12期|P.3778-3789|共12页
  • 作者单位

    Chongqing Key Laboratory of Nano/Micro Composites and Devices College of Metallurgy and Materials Engineering Chongqing University of Science and Technology Chongqing 401331 China;

    Chongqing Key Laboratory of Nano/Micro Composites and Devices College of Metallurgy and Materials Engineering Chongqing University of Science and Technology Chongqing 401331 China;

    Chongqing Key Laboratory of Nano/Micro Composites and Devices College of Metallurgy and Materials Engineering Chongqing University of Science and Technology Chongqing 401331 China;

    Chongqing Key Laboratory of Nano/Micro Composites and Devices College of Metallurgy and Materials Engineering Chongqing University of Science and Technology Chongqing 401331 China;

    Chongqing Key Laboratory of Nano/Micro Composites and Devices College of Metallurgy and Materials Engineering Chongqing University of Science and Technology Chongqing 401331 China;

    Chongqing Key Laboratory of Nano/Micro Composites and Devices College of Metallurgy and Materials Engineering Chongqing University of Science and Technology Chongqing 401331 China;

    Chongqing Key Laboratory of Nano/Micro Composites and Devices College of Metallurgy and Materials Engineering Chongqing University of Science and Technology Chongqing 401331 China;

    Chongqing Key Laboratory of Nano/Micro Composites and Devices College of Metallurgy and Materials Engineering Chongqing University of Science and Technology Chongqing 401331 China;

    The Molecular Foundry Lawrence Berkeley National Laboratory Berkeley California 94720 USA;

    Chongqing Key Laboratory of Nano/Micro Composites and Devices College of Metallurgy and Materials Engineering Chongqing University of Science and Technology Chongqing 401331 China;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 物理化学(理论化学)、化学物理学;
  • 关键词

    异质结型BaTiO_(3)@TiO_(2); 铁电极化; 界面相互作用; 光催化活性;

  • 入库时间 2023-07-25 15:45:07

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