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Construction of Hierarchical Hollow Co9S8/ZnIn2S4 Tubular Heterostructures for Highly Efficient Solar Energy Conversion and Environmental Remediation

机译:分层空心CO9S8 / Znin2S4管状异质结构的构建,用于高效的太阳能转换和环境修复

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摘要

Visible-light-responsive hierarchical Co9S8/ZnIn2S4 tubular heterostructures are fabricated by growing 2D ZnIn2S4 nanosheets on 1D hollow Co9S8 nanotubes. This design combines two photoresponsive sulfide semiconductors in a stable heterojunction with a hierarchical hollow tubular structure, improving visible-light absorption, yielding a large surface area, exposing sufficient catalytically active sites, and promoting the separation and migration of photogenerated charges. The hierarchical nanotubes exhibit excellent photocatalytic H-2 evolution and Cr-VI reduction efficiency. Under visible-light illumination, the optimized Co9S8/ZnIn2S4 heterostructure provides a remarkable H-2 generation rate of 9039 mu mol h(-1) g(-1) without the use of any co-catalysts and Cr-VI is completely reduced in 45 min. The Co9S8/ZnIn2S4 heterostructure is stable after multiple photocatalytic cycles.
机译:可见光响应的分层CO9S8 / Znin2S4管状异质结构通过在1D中空CO9S8纳米管上生长2D Znin2S4纳米晶片来制造。 该设计将两个光致硫化物半导体与分层中空管状结构相结合,提高了可见光吸收,产生大表面积,暴露足够的催化活性位点,并促进光生电电荷的分离和迁移。 分层纳米管具有优异的光催化H-2演化和CR-VI降低效率。 在可见光照射下,优化的CO9S8 / Znin2S4异质结构提供了9039μmolH(-1)G(-1)的显着H-2生成速率,而不使用任何助催化剂,并且Cr-Vi完全降低 45分钟。 在多个光催化循环后,CO9S8 / Znin2S4异质结构是稳定的。

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  • 来源
    《Angewandte Chemie》 |2020年第21期|共7页
  • 作者单位

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Suzhou 215123 Peoples R China;

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Suzhou 215123 Peoples R China;

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Suzhou 215123 Peoples R China;

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Suzhou 215123 Peoples R China;

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Suzhou 215123 Peoples R China;

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Suzhou 215123 Peoples R China;

    Soochow Univ Coll Chem Chem Engn &

    Mat Sci Collaborat Innovat Ctr Suzhou Nano Sci &

    Technol Suzhou 215123 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用化学;
  • 关键词

    Co9S8; ZnIn2S4 nanotubes; energy conversion; environmental remediation; hierarchical heterostructures; photocatalysis;

    机译:CO9S8;Znin2S4纳米管;能量转换;环境修复;分层异质结构;光催化;

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