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首页> 外文期刊>RSC Advances >Controllable synthesis of Bi2S3/CuS heterostructures by an in situ ion-exchange solvothermal process and their enhanced photocatalytic performance
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Controllable synthesis of Bi2S3/CuS heterostructures by an in situ ion-exchange solvothermal process and their enhanced photocatalytic performance

机译：用原位离子交换溶剂热处理可控合成BI2S3 / CUS异质结构及其增强的光催化性能

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摘要

A novel Bi2S3/CuS hybrid photocatalyst with a 3D hierarchical configuration has been synthesized through an in situ solution-based cation exchange reaction that creates a heterojunction between a single-crystalline Bi2S3 nanotube/nanorod core and CuS nanoplates shell. The crystal structure, optical absorption and morphology evolutions of the nanocomposites with different Bi2S3 to CuS ratios were investigated systematically, and a possible formation process of the heterostructure was proposed. The Bi2S3/CuS hierarchical nanocomposite photocatalysts exhibit a broad range of absorption wavelength and good visible-light-driven photocatalytic activity for the degradation of rhodamine B (RhB) aqueous solution, compared with bare orthorhombic Bi2S3 nanotubes/nanorods. The enhanced photocatalytic performance of the Bi2S3/CuS composites could be attributed to the effective electron-hole separation at the interface of these two semiconductors, as well as wider and more intensified light absorption of the solar spectrum. The present study provides helpful insight into rational design and fabrication of novel and efficient chalcogenide-based heterostructure photocatalysts.
机译：通过基于原位溶液的阳离子交换反应合成了具有3D层次结构的新型Bi2S3 / CUS杂化光催化剂，该反应在单晶BI2S3纳米管/纳米芯芯和CUS纳米板壳之间产生异质结。系统地研究了具有不同BI2S3至CUS比的纳米复合材料的晶体结构，光学吸收和形态演化，提出了异质结构的可能形成过程。与裸露正极的Bi2S3纳米管/纳米管/纳米管相比，Bi2S3 / CUS分层纳米复合光催化剂具有广泛的吸收波长和良好的可见光光催化活性，用于罗丹明B（RHB）水溶液的降解。 BI2S3 / CUS复合材料的增强的光催化性能可归因于这两个半导体界面处的有效电子 - 空穴分离，以及更广泛和更强烈的太阳光谱的光吸收。本研究提供了有用的洞察力设计，对新型和有效的基于硫属化物的异质结构光催化剂的合理设计和制造。

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  • 来源
    《RSC Advances》 |2016年第105期|共9页
  • 作者

    Zhang Yu-Qiao; Li Shun; Zhang Bo-Ping;

  • 作者单位

    Univ Sci &

    Technol Beijing Beijing Municipal Key Lab Adv Energy Mat &

    Techno Sch Mat Sci &

    Engn 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beijing Municipal Key Lab Adv Energy Mat &

    Techno Sch Mat Sci &

    Engn 30 Xueyuan Rd Beijing 100083 Peoples R China;

    Univ Sci &

    Technol Beijing Beijing Municipal Key Lab Adv Energy Mat &

    Techno Sch Mat Sci &

    Engn 30 Xueyuan Rd Beijing 100083 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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