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首页> 外文期刊>Applied Surface Science >Pouous TiO2 nanofibers decorated CdS nanoparticles by SILAR method for enhanced visible-light-driven photocatalytic activity
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Pouous TiO2 nanofibers decorated CdS nanoparticles by SILAR method for enhanced visible-light-driven photocatalytic activity

机译：用SILAR方法将无定形的TiO2纳米纤维修饰为CdS纳米颗粒，以增强可见光驱动的光催化活性

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摘要

1D porous CdS nanoparticlesiTiO(2) nanofibers heterostructure has been fabricated via simple electrospinning and a successive ionic layer adsorption and reaction (SILAR) process. The morphology, composition, and optical properties of the resulting CdS/TiO2 heterostructures can be rationally tailored through changing the SILAR cycles. The photocatalytic hydrogen evolution and decomposition of rhodamine B (RhB) of the as-synthesized heterostructured photocatalysts were investigated under visible light irradiation. Compared to TiO2 nanofibers, the as-obtained CdS/TiO2 heterostructures exhibit enhanced photocatalytic activity for hydrogen production and decomposition of RhB under visible-light irradiation. The heterojunction system performs best with H-2 generation rates of 678.61 mu mol h(-1) g(-1) under visible light irradiation which benefits from the two effects: (a) the 10 porous nanofibrous morphology contributes to not only more active sites but also more efficient transfer of the photogenerated charges (b) the synergetic effect of heterojunction and photosensitization reducing the recombination of photogenerated electrons and holes. (C) 2016 Elsevier B.V. All rights reserved.
机译：一维多孔CdS纳米颗粒TiO（2）纳米纤维异质结构已经通过简单的静电纺丝和连续的离子层吸附和反应（SILAR）工艺制造。可以通过改变SILAR循环合理地调整所得CdS / TiO2异质结构的形态，组成和光学性质。在可见光照射下研究了合成的异质结构光催化剂中若丹明B（RhB）的光催化氢演化和分解。与TiO2纳米纤维相比，如此获得的CdS / TiO2异质结构在可见光照射下具有增强的产氢和RhB分解的光催化活性。异质结系统在可见光照射下的H-2生成速率最佳，为678.61μmol h（-1）g（-1），这得益于以下两种作用：（a）10种多孔纳米纤维形态不仅有助于提高活性（b）异质结和光敏化的协同效应，减少了光生电子和空穴的复合。 （C）2016 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2017年第ptab期|295-302|共8页
  • 作者

    Tian Fengyu; Hou Dongfang; Hu Fuchao; Xie Kui; Qiao Xiuqing; Li Dongsheng;

  • 作者单位

    China Three Gorges Univ, Key Lab Inorgan Nonmetall Crystalline & Energy Co, Hubei Prov Collaborat Innovat Ctr New Energy Micr, Coll Mat & Chem Engn, Yichang 443002, Peoples R China;

    China Three Gorges Univ, Key Lab Inorgan Nonmetall Crystalline & Energy Co, Hubei Prov Collaborat Innovat Ctr New Energy Micr, Coll Mat & Chem Engn, Yichang 443002, Peoples R China;

    China Three Gorges Univ, Key Lab Inorgan Nonmetall Crystalline & Energy Co, Hubei Prov Collaborat Innovat Ctr New Energy Micr, Coll Mat & Chem Engn, Yichang 443002, Peoples R China;

    China Three Gorges Univ, Key Lab Inorgan Nonmetall Crystalline & Energy Co, Hubei Prov Collaborat Innovat Ctr New Energy Micr, Coll Mat & Chem Engn, Yichang 443002, Peoples R China;

    China Three Gorges Univ, Key Lab Inorgan Nonmetall Crystalline & Energy Co, Hubei Prov Collaborat Innovat Ctr New Energy Micr, Coll Mat & Chem Engn, Yichang 443002, Peoples R China;

    China Three Gorges Univ, Key Lab Inorgan Nonmetall Crystalline & Energy Co, Hubei Prov Collaborat Innovat Ctr New Energy Micr, Coll Mat & Chem Engn, Yichang 443002, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Pouous TiO2 nanofiber; CdS nanoparticle; Heterostructure; Photocatalytic activity;

    机译：TiO2纳米纤维;CdS纳米颗粒;结构;光催化活性;

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