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钒-氮共掺杂TiO2的合成、表征及光催化性能

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李琪, 韩立娟, 刘刚, 陈作雁, 安兴才. 钒-氮共掺杂TiO2的合成、表征及光催化性能[J]. 环境化学, 2013, 32(6): 1073-1080. doi: 10.7524/j.issn.0254-6108.2013.06.024
引用本文: 李琪, 韩立娟, 刘刚, 陈作雁, 安兴才. 钒-氮共掺杂TiO2的合成、表征及光催化性能[J]. 环境化学, 2013, 32(6): 1073-1080. doi: 10.7524/j.issn.0254-6108.2013.06.024
shu
LI Qi, HAN Lijuan, LIU Gang, CHEN Zuoyan, AN Xingcai. Synthesis,characterization and Degradation performance of V-N-TiO2 nanoparticle photocatalysts[J]. Environmental Chemistry, 2013, 32(6): 1073-1080. doi: 10.7524/j.issn.0254-6108.2013.06.024
Citation: LI Qi, HAN Lijuan, LIU Gang, CHEN Zuoyan, AN Xingcai. Synthesis,characterization and Degradation performance of V-N-TiO2 nanoparticle photocatalysts[J]. Environmental Chemistry, 2013, 32(6): 1073-1080. doi: 10.7524/j.issn.0254-6108.2013.06.024
shu

钒-氮共掺杂TiO2的合成、表征及光催化性能

  • 1.

    甘肃省分析测试中心, 兰州, 730000;

  • 2.

    甘肃省科学院自然能源研究所, 兰州, 730046

  • 基金项目:

    甘肃省科技支撑计划项目(090NKCA122)资助.

Synthesis,characterization and Degradation performance of V-N-TiO2 nanoparticle photocatalysts

  • 1.

    Analysis and Research Center of Gansu Province, Lanzhou, 730000, China;

  • 2.

    Gansu Natural Energy Research Institute, GSAS, Lanzhou, 730046, China

  • Fund Project:

  • 摘要: 以偏钒酸铵作为钒源、二乙醇胺作为氮源,采用溶胶-凝胶法合成了钒-氮共掺杂TiO2.通过XRD、UV-Vis、TEM、XPS、BET等表征手段,对光催化剂的晶体结构及形貌、紫外可见光响应特性、比表面积、表面元素及存在形式进行分析,探讨钒氮共掺杂TiO2的影响机制.以苯酚为污染物,评价其在紫外光及可见光下的光催化活性.结果显示,所合成的光催化剂均为锐钛矿,钒氮共掺杂能够增大其比表面积,并使光吸收范围拓展至可见光区,N以O-Ti-N、Ti-O-N结构存在于钒氮共掺杂TiO2中,V以V5+的形式存在,钒-氮共掺杂TiO2在紫外光下对苯酚降解速率是TiO2的3.18倍,在可见光下对苯酚的降解速率为TiO2的2.56倍,重复使用7次后,钒-氮共掺杂TiO2对苯酚的降解率仍可以达到99%以上.
    Abstract: V-N-TiO2 nanoparticle were synthesized by sol-gel method, with diethanolamine as nitrogen source, and ammonium metavanadate as vanadium source. The samples were characterized by XRD, UV-Vis, TEM, XPS, BET etc, and their photocatalytic activity was investigated in the degradation of phenol.The result shows that all the samples were anatase form. Vanadium and nitrogen co-doping increased the specific surface area of the material and expanded the light absorption to the visible region. The result of XPS shows that nitrogen in V-N-TiO2 is in the form of O-Ti-N and Ti-O-N, and vanadium in V-N-TiO2 is in the form of V5+. V-N-TiO2 demonstrated high catalytic activity in the degradation of phenol under UV-light(3.18 times higher than TiO2) and visible light(2.56 times higher than TiO2). Furthermore, the degradation rate of phenol by V-N-TiO2 catalyst reached 99% after being re-used for 7 times.
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  • 收稿日期:  2012-11-21
李琪, 韩立娟, 刘刚, 陈作雁, 安兴才. 钒-氮共掺杂TiO2的合成、表征及光催化性能[J]. 环境化学, 2013, 32(6): 1073-1080. doi: 10.7524/j.issn.0254-6108.2013.06.024
引用本文: 李琪, 韩立娟, 刘刚, 陈作雁, 安兴才. 钒-氮共掺杂TiO2的合成、表征及光催化性能[J]. 环境化学, 2013, 32(6): 1073-1080. doi: 10.7524/j.issn.0254-6108.2013.06.024
shu
LI Qi, HAN Lijuan, LIU Gang, CHEN Zuoyan, AN Xingcai. Synthesis,characterization and Degradation performance of V-N-TiO2 nanoparticle photocatalysts[J]. Environmental Chemistry, 2013, 32(6): 1073-1080. doi: 10.7524/j.issn.0254-6108.2013.06.024
Citation: LI Qi, HAN Lijuan, LIU Gang, CHEN Zuoyan, AN Xingcai. Synthesis,characterization and Degradation performance of V-N-TiO2 nanoparticle photocatalysts[J]. Environmental Chemistry, 2013, 32(6): 1073-1080. doi: 10.7524/j.issn.0254-6108.2013.06.024
shu

钒-氮共掺杂TiO2的合成、表征及光催化性能

  • 1.  甘肃省分析测试中心, 兰州, 730000;
  • 2.  甘肃省科学院自然能源研究所, 兰州, 730046
  • 收稿日期:  2012-11-21
基金项目:

甘肃省科技支撑计划项目(090NKCA122)资助.

摘要: 以偏钒酸铵作为钒源、二乙醇胺作为氮源,采用溶胶-凝胶法合成了钒-氮共掺杂TiO2.通过XRD、UV-Vis、TEM、XPS、BET等表征手段,对光催化剂的晶体结构及形貌、紫外可见光响应特性、比表面积、表面元素及存在形式进行分析,探讨钒氮共掺杂TiO2的影响机制.以苯酚为污染物,评价其在紫外光及可见光下的光催化活性.结果显示,所合成的光催化剂均为锐钛矿,钒氮共掺杂能够增大其比表面积,并使光吸收范围拓展至可见光区,N以O-Ti-N、Ti-O-N结构存在于钒氮共掺杂TiO2中,V以V5+的形式存在,钒-氮共掺杂TiO2在紫外光下对苯酚降解速率是TiO2的3.18倍,在可见光下对苯酚的降解速率为TiO2的2.56倍,重复使用7次后,钒-氮共掺杂TiO2对苯酚的降解率仍可以达到99%以上.

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