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首页> 外文期刊>Applied Surface Science >In situ decoration of g-C_3N_4 quantum dots on 1D branched TiO_2 loaded with plasmonic Au nanoparticles and improved the photocatalytic hydrogen evolution activity
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In situ decoration of g-C_3N_4 quantum dots on 1D branched TiO_2 loaded with plasmonic Au nanoparticles and improved the photocatalytic hydrogen evolution activity

机译：原位装饰G-C_3N_4量子点在1D支化TiO_2上装有等离子体Au纳米颗粒并改善光催化氢进化活性

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摘要

The hybrid 1D branched TiO2 loaded with surface plasmonic Au and decorated with g-C3N4 QDs were successfully fabricated which played a significant role in photocatalysis. The 1D branched TiO2 prepared by electrospinning followed by an alkali-hydrothermal process. The Au particles decorated by photo deposition and after that g-C3N4 QDs were grafted over it by a chemical vapor deposition method. The composite shows great improvement in photocatalytic hydrogen evolution and evolved about 2.22 mmol g(-1) h(-1) hydrogen. The composite sample has a quantum efficiency of 19.5% for hydrogen production at 420 nm light that depicts the performance behavior of the composite. The 1D branched TiO2 fiber facilitates the fast transfer of electrons and Au reduces the charge recombination due to its surface plasmonic effect while g-C3N4 QDs facilitate the visible light absorption by improving the optical properties and reduces the bandgap. The formation of the type II heterostructure system remarkably promotes the separation and transfer of electron holes and facilitates the photo-reduction reaction.
机译：装有表面等离子体Au的杂合1D支链TiO2并成功地制造了G-C3N4QDS装饰，在光催化中起着显着作用。通过静电纺丝制备的1D支化TiO 2，然后是碱水热法制备。通过光沉积和之后通过化学气相沉积方法接枝G-C3N4QD的Au颗粒。复合材料显示出光催化氢进化的巨大改善，进化约2.22mmol G（-1）H（-1）氢。复合样品的量子效率为19.5％，用于420 nm光的氢气产生，其描绘了复合材料的性能行为。 1D支链TiO 2纤维有助于电子的快速转移，Au由于其表面等离子体效应而降低了电荷重组，而G-C3N4 QD通过改善光学性质并减少带隙而有利于可见光吸收。 II型异质结构系统的形成显着促进了电子孔的分离和转移，并促进了光还原反应。

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  • 来源
    《Applied Surface Science》 |2020年第jul30期|146208.1-146208.12|共12页
  • 作者

    Nasir Muhammad Salman; Yang Guorui; Ayub Iqra; Wang Silan; Yan Wei;

  • 作者单位

    Xi An Jiao Tong Univ Dept Environm Sci & Engn State Key Lab Multiphase Flow Power Engn Xian 710049 Peoples R China|Univ Agr Faisalabad Dept Struct & Environm Engn Faisalabad 38040 Pakistan;

    Xi An Jiao Tong Univ Dept Environm Sci & Engn State Key Lab Multiphase Flow Power Engn Xian 710049 Peoples R China|Xi An Jiao Tong Univ MOE Key Lab Nonequilibrium Synth & Modulat Conden State Key Lab Elect Insulat & Power Equipment Dept Appl Chem Sch Sci Xian 710049 Peoples R China|Xi An Jiao Tong Univ Suzhou Inst Suzhou 215123 Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Multiphase Flow Power Engn Sch Chem Engn & Technol Xian 710049 Peoples R China|Univ Agr Faisalabad Dept Energy Syst Engn Faisalabad 38040 Pakistan;

    Xi An Jiao Tong Univ Dept Environm Sci & Engn State Key Lab Multiphase Flow Power Engn Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Dept Environm Sci & Engn State Key Lab Multiphase Flow Power Engn Xian 710049 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Photocatalyst; Hydrogen; Quantum dots; Hierarchical; Plasmonic;

    机译：光催化剂;氢;量子点;等级;等离子体;

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