锐钛矿{001}面TiO2纳米片对NOx的光催化氧化性能

林春敬, 胡芸, 韦朝海. 锐钛矿{001}面TiO2纳米片对NOx的光催化氧化性能[J]. 环境化学, 2013, 32(8): 1507-1512. doi: 10.7524/j.issn.0254-6108.2013.08.014
引用本文: 林春敬, 胡芸, 韦朝海. 锐钛矿{001}面TiO2纳米片对NOx的光催化氧化性能[J]. 环境化学, 2013, 32(8): 1507-1512. doi: 10.7524/j.issn.0254-6108.2013.08.014
LIN Chunjing, HU Yun, WEI Chaohai. Photocatalytic oxidation of NOx on anatase titania nanosheets with exposed {001} facets[J]. Environmental Chemistry, 2013, 32(8): 1507-1512. doi: 10.7524/j.issn.0254-6108.2013.08.014
Citation: LIN Chunjing, HU Yun, WEI Chaohai. Photocatalytic oxidation of NOx on anatase titania nanosheets with exposed {001} facets[J]. Environmental Chemistry, 2013, 32(8): 1507-1512. doi: 10.7524/j.issn.0254-6108.2013.08.014

锐钛矿{001}面TiO2纳米片对NOx的光催化氧化性能

  • 基金项目:

    国家自然科学基金项目(21277051, 20807015)

    广州市科技计划(12C62081602)

    华南理工大学中央高校基本科研业务费专项资金(2012ZZ0049)资助.

Photocatalytic oxidation of NOx on anatase titania nanosheets with exposed {001} facets

  • Fund Project:
  • 摘要: 以钛酸丁酯为前驱物,HF为形貌控制剂,采用水热法合成{001}面TiO2光催化材料.通过X射线衍射、紫外\可见光吸收光谱、扫描电镜及透射电镜等手段对样品形貌及结构进行表征,并在紫外光下考察其对NOx的光催化氧化活性.结果表明,{001}面TiO2具有良好的锐钛矿晶型,为{001}面暴露率约50%的纳米级片状结构,在紫外波段具有强烈的光吸收.经过碱液洗涤去除表面F离子后的{001}面TiO2与{101}面TiO2及P25相比,其对NOx去除效果显著.在催化反应达到平衡后,其NO转化率为{101}面TiO2的2倍及P25的3倍.并且NO去除量增加的同时NO2的相对生成量却减少,导致光催化反应进行得更彻底.
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  • 收稿日期:  2013-02-18
林春敬, 胡芸, 韦朝海. 锐钛矿{001}面TiO2纳米片对NOx的光催化氧化性能[J]. 环境化学, 2013, 32(8): 1507-1512. doi: 10.7524/j.issn.0254-6108.2013.08.014
引用本文: 林春敬, 胡芸, 韦朝海. 锐钛矿{001}面TiO2纳米片对NOx的光催化氧化性能[J]. 环境化学, 2013, 32(8): 1507-1512. doi: 10.7524/j.issn.0254-6108.2013.08.014
LIN Chunjing, HU Yun, WEI Chaohai. Photocatalytic oxidation of NOx on anatase titania nanosheets with exposed {001} facets[J]. Environmental Chemistry, 2013, 32(8): 1507-1512. doi: 10.7524/j.issn.0254-6108.2013.08.014
Citation: LIN Chunjing, HU Yun, WEI Chaohai. Photocatalytic oxidation of NOx on anatase titania nanosheets with exposed {001} facets[J]. Environmental Chemistry, 2013, 32(8): 1507-1512. doi: 10.7524/j.issn.0254-6108.2013.08.014

锐钛矿{001}面TiO2纳米片对NOx的光催化氧化性能

  • 1. 华南理工大学环境与能源学院, 工业聚集区污染控制与生态修复教育部重点实验室, 广州, 510006
基金项目:

国家自然科学基金项目(21277051, 20807015)

广州市科技计划(12C62081602)

华南理工大学中央高校基本科研业务费专项资金(2012ZZ0049)资助.

摘要: 以钛酸丁酯为前驱物,HF为形貌控制剂,采用水热法合成{001}面TiO2光催化材料.通过X射线衍射、紫外\可见光吸收光谱、扫描电镜及透射电镜等手段对样品形貌及结构进行表征,并在紫外光下考察其对NOx的光催化氧化活性.结果表明,{001}面TiO2具有良好的锐钛矿晶型,为{001}面暴露率约50%的纳米级片状结构,在紫外波段具有强烈的光吸收.经过碱液洗涤去除表面F离子后的{001}面TiO2与{101}面TiO2及P25相比,其对NOx去除效果显著.在催化反应达到平衡后,其NO转化率为{101}面TiO2的2倍及P25的3倍.并且NO去除量增加的同时NO2的相对生成量却减少,导致光催化反应进行得更彻底.

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