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首页> 外文期刊>Applied Surface Science >Hydrogen evolution from aqueous-phase photocatalytic reforming of ethylene glycol over Pt/TiO2 catalysts: Role of Pt and product distribution
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Hydrogen evolution from aqueous-phase photocatalytic reforming of ethylene glycol over Pt/TiO2 catalysts: Role of Pt and product distribution

机译：Pt / TiO2催化剂上乙二醇的水相光催化重整制氢：Pt的作用和产物分布

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摘要

Pt nanoparticles were loaded on anatase TiO2 by the photodeposition method to investigate their photocatalytic activity for H-2 evolution in an aqueous solution containing a certain amount of ethylene glycol (EG) as the sacrificial agent. The surface properties and chemical states of the PtiTiO(2) sample were characterized by X-ray powder diffraction analysis, Brunauer-Emmett-Teller surface area analysis, transmission electron microscopy, X-ray photoelectron spectroscopy, electron paramagnetic resonance, and electrochemical resistance. The aqueous-phase photocatalytic EG reforming using PtiTiO(2) and anatase TiO2 generated not only H-2 and CO2, but also CO, CH4, C2H6, and C2H4. Moreover, the amount of formate and acetate complexes in the solution increased gradually. The EG adsorption and gas-phase intermediates during photocatalytic reaction processes were investigated by the in situ FTIR spectrum. Finally, the photocatalytic EG reforming reaction mechanism was elucidated. This helped to better understand the role of a sacrificial agent in a photocatalytic hydrogen production. (C) 2016 Elsevier B.V. All rights reserved.
机译：通过光沉积法将Pt纳米颗粒负载在锐钛矿型TiO2上，以研究其在含有一定量的乙二醇（EG）作为牺牲剂的水溶液中对H-2析出的光催化活性。通过X射线粉末衍射分析，Brunauer-Emmett-Teller表面积分析，透射电子显微镜，X射线光电子能谱，电子顺磁共振和电化学电阻来表征PtiTiO（2）样品的表面性质和化学状态。使用PtiTiO（2）和锐钛矿型TiO2的水相光催化EG重整不仅生成H-2和CO2，还生成CO，CH4，C2H6和C2H4。此外，溶液中甲酸和乙酸盐络合物的量逐渐增加。通过原位FTIR光谱研究了光催化反应过程中的EG吸附和气相中间体。最后，阐明了光催化EG重整反应的机理。这有助于更好地了解牺牲剂在光催化制氢中的作用。 （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|251-258|共8页
  • 作者

    Li Fuying; Gu Quan; Niu Yu; Wang Renzhang; Tong Yuecong; Zhu Shuying; Zhang Hualei; Zhang Zizhong; Wang Xuxu;

  • 作者单位

    Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China|Sanming Univ, Coll Resources & Chem Engn, Sanming 365004, Peoples R China;

    Shaanxi Normal Univ, Sch Chem & Chem Engn, Key Lab Appl Surface & Colloid Chem, Minist Educ, Xian 710062, Peoples R China;

    Sanming Univ, Coll Resources & Chem Engn, Sanming 365004, Peoples R China|Fuzhou Univ, Sch Chem Engn, Fuzhou 350116, Peoples R China;

    Sanming Univ, Coll Resources & Chem Engn, Sanming 365004, Peoples R China;

    Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China;

    Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China;

    Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China;

    Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China;

    Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Ethylene glycol; Chemisorption; Photocatalytic reforming; Sacrificial agent; Water splitting;

    机译：乙二醇;化学吸附;光催化重整;牺牲剂;水分解;

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