| 洪益娟,张钦辉,于建国.CuOx/TiO2光催化水蒸气还原CO2[J].分子催化,2011,(1):84-89 |
| CuOx/TiO2光催化水蒸气还原CO2 |
| Photocatalytic Reduction of CO2 with H2O Vapor on CuOx/TiO2 |
| 投稿时间：2010-11-11 修订日期：2011-01-12 |
| DOI： |
| 中文关键词: H2O，CO2，还原，TiO2，光催化 |
| 英文关键词:H2O CO2 Reduction TiO2 Photocatalysis |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 摘要点击次数: 13439 |
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| 中文摘要: |
| 以商品TiO2-P25为原料，通过浸渍法负载一定量过渡金属Cu，得到一系列不同含量的CuOx/TiO2光催化剂。利用X射线衍射（XRD），X－射线光电子能谱（XPS），BET，高分辨率透射镜（HRTEM），X射线荧光光谱（XRF）和光致发光光谱（PL）等方法对催化剂进行了详细表征，在自建的光催化反应器中评价了气态水光催化还原CO2反应的活性和CH4收率。结果表明负载CuOx后的TiO2纳米材料光催化性能显著提高，其中1%CuOx/TiO2样品紫外光照72 h后，CH4生成量达到了24.86 µmol•gTi-1。同时，CuOx负载量、反应温度、反应时间等因素对CH4收率均有显著影响。 |
| 英文摘要: |
| Using TiO2-P25 as a main material, CuOx loaded TiO2-P25 photocatalysts were prepared via wet impregnation method. The catalysts were characterized with powder X-Ray Diffraction (XRD), XPS,BET, High-Resolution Transmission Electron Microscopy (HRTEM), X-Ray Fluorescence Spectrometry (XRF) and photoluminescence (PL). The photoactivity of the catalysts was tested by photocatalytic reduction of CO2 with H2O vapor to produce chemically valuable compound including CH4 in self-build experimental set up. The experiment results suggested that the photocatalytic activity of TiO2 was improved remarkably with the loading of CuOx on the catalyst surface. The CH4 yield on 1%CuOx/TiO2 reached 24.86µmol•gTi-1 after 72 h UV irradiation, and the CuOx loading amount , the reaction temperature, reaction time also had great effect on CH4 yield. |
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