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首页> 外文期刊>RSC Advances >Flake-like InVO4 modified TiO2 nanofibers with longer carrier lifetimes for visible-light photocatalysts
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Flake-like InVO4 modified TiO2 nanofibers with longer carrier lifetimes for visible-light photocatalysts

机译：片状的Invo4改性TiO2纳米纤维，具有较长的载体寿命，用于可见光光催化剂

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摘要

Highly efficient solar light absorption capabilities and quantum yields in photocatalysts are key to their application in photocatalytic fields. Towards this end, TiO2/InVO4 nanofibers (NFs) have been designed and fabricated successfully by a one-pot electrospinning process. The resulting TiO2/InVO4 NFs display excellent visible-light photocatalytic activity, owing to their prominent visible-light absorption and electron-hole separation properties. Time-resolved transient PL spectroscopy demonstrated that the TiO2/InVO4 NFs display longer emission decay times (22.0 ns) compared with TiO2 NFs (15.5 ns), implying that the heterojunction can remarkably suppress the electron-hole recombination and promote the carrier transfer efficiency. With tailored heterostructure features, TiO2/InVO4 NFs exhibit superior visible-light photodegradation activity, and after 80 min of visible-light irradiation, almost 95% of RhB molecules can be decomposed by TiO2/InVO4 NFs, while only 18% of RhB molecules can be decomposed by pure TiO2 NFs.
机译：光催化剂中高效的太阳光吸收能力和量子产率是它们在光催化领域应用的关键。朝向此目的，通过单锅静电纺丝过程成功设计和制造了TiO2 / ImO4纳米纤维（NFS）。由于其突出的可见光吸收和电子空穴分离性能，所得TiO2 / ImO4 NFS显示出优异的可见光光催化活性。与TiO 2 NFS（15.5ns）相比，TiO2 / ImO4 NFS显示TiO2 / ImO4 NFS显示较长的发射衰减时间（22.0ns），这意味着异质结可以显着抑制电子 - 空穴重组并促进载流子转移效率。具有量定制的异质结构特征，TiO2 / INVO4 NFS具有卓越的可见光光降解活性，并且在80分钟的可见光照射后，几乎95％的RHB分子可以通过TiO2 / ImO4 NFS分解，而只有18％的RHB分子可以用纯TiO2 NFS分解。

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  • 来源
    《RSC Advances》 |2018年第48期|共7页
  • 作者

    Zhou Yun; Liu Lixin; Wu Tao; Yuan Guolong; Li Junyu; Ding Qiujie; Qi Fugang; Zhu Wenjun; OuYang Xiaoping; Wang Yuan;

  • 作者单位

    Xiangtan Univ Sch Mat Sci &

    Engn Xiangtan 411105 Hunan Peoples R China;

    China Acad Engn Phys Inst Fluid Phys Natl Key Lab Shock Wave &

    Detonat Phys POB 919-111 Mianyang 621900 Sichuan Peoples R China;

    China Acad Engn Phys Inst Fluid Phys Natl Key Lab Shock Wave &

    Detonat Phys POB 919-111 Mianyang 621900 Sichuan Peoples R China;

    Xiangtan Univ Sch Mat Sci &

    Engn Xiangtan 411105 Hunan Peoples R China;

    Xiangtan Univ Sch Mat Sci &

    Engn Xiangtan 411105 Hunan Peoples R China;

    Xiangtan Univ Sch Mat Sci &

    Engn Xiangtan 411105 Hunan Peoples R China;

    Xiangtan Univ Sch Mat Sci &

    Engn Xiangtan 411105 Hunan Peoples R China;

    China Acad Engn Phys Inst Fluid Phys Natl Key Lab Shock Wave &

    Detonat Phys POB 919-111 Mianyang 621900 Sichuan Peoples R China;

    Xiangtan Univ Sch Mat Sci &

    Engn Xiangtan 411105 Hunan Peoples R China;

    China Acad Engn Phys Inst Fluid Phys Natl Key Lab Shock Wave &

    Detonat Phys POB 919-111 Mianyang 621900 Sichuan Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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