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氮掺杂TiO2可见光光催化剂的制备及性能

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夏勇, 王海燕, 沈翔. 氮掺杂TiO2可见光光催化剂的制备及性能[J]. 环境工程学报, 2012, 6(9): 3073-3078.
引用本文: 夏勇, 王海燕, 沈翔. 氮掺杂TiO2可见光光催化剂的制备及性能[J]. 环境工程学报, 2012, 6(9): 3073-3078.
shu
Xia Yong, Wang Haiyan, Shen Xiang. Preparation and performance of nitrogen-doped photocatalyst with visible light response[J]. Chinese Journal of Environmental Engineering, 2012, 6(9): 3073-3078.
Citation: Xia Yong, Wang Haiyan, Shen Xiang. Preparation and performance of nitrogen-doped photocatalyst with visible light response[J]. Chinese Journal of Environmental Engineering, 2012, 6(9): 3073-3078.
shu

氮掺杂TiO2可见光光催化剂的制备及性能

  • 1.

    攀枝花市环境保护科学研究所,攀枝花 617000

  • 2.

    教育部纳米矿物材料及应用工程研究中心(中国地质大学),武汉 430074

  • 基金项目:

    中国博士后科学基金资助项目(20090451092)

    教育部纳米矿物材料与应用工程研究中心开放基金(10407402)

  • 中图分类号: X703.5

Preparation and performance of nitrogen-doped photocatalyst with visible light response

  • 1.

    Panzhihua Research Institute of Environmental Protection, Panzhihua 617000, China

  • 2.

    Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan 430074, China

  • Fund Project:

  • 摘要: 以尿素和钛酸丁酯为原料,通过溶胶-凝胶法低温下制备了高可见光催化活性的氮掺杂TiO2 (NDT)光催化剂,采用XRD、TEM、BET和UV-Vis DRS等测试手段对其进行了表征,并在自制光催化反应器中降解甲基橙评价了样品的光催化活性。结果表明,当氮与钛的摩尔比为0.5∶1时,350℃焙烧的样品(NDT350)具有最佳的可见光光谱吸收和光催化活性,该催化剂为锐钛矿晶相,平均粒径为21 nm,比表面积为89.13 m2/g。可见光辐照下,NDT350降解甲基橙的表观反应速率常数为1.381×10-2 min-1,是商业P25催化剂的16.85倍。NDT350优良的可见光催化活性与其大的比表面积和强烈的可见光光谱吸收有关。
    Abstract: N-doped TiO2 (NDT) was prepared by a sol-gel method at low temperature using urea and tetrabutyl titanate as precursors. The prepared samples were characterized by XRD, TEM, BET and UV-Vis DRS. Its photocatalytic activity was examined by the degradation of methyl orange (MO) in a homemade photocatalytic reactor. When the mole ratio of nitrogen to titanium is 0.5∶1, N-doped TiO2 calcined at 350℃ (NDT350) exhibits the strongest visible light absorption and the highest photocatalytic degradation towards MO under visible light irradiation. NDT350 is in anatase phase with its average particle size and specific surface area reaches 21 nm and 89.13 m2/g, respectively. Under visible light irradiation, the apparent rate constant of the NDT350 catalyst reaches 1.381×10-2 min-1 which is 16.85 times of that of Degussa P25. The high visible photocatalytic activity of NDT350 may be attributed to its large specific surface area and strong visible light absorption.
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出版历程
  • 收稿日期:  2011-05-16
  • 刊出日期:  2012-09-14
夏勇, 王海燕, 沈翔. 氮掺杂TiO2可见光光催化剂的制备及性能[J]. 环境工程学报, 2012, 6(9): 3073-3078.
引用本文: 夏勇, 王海燕, 沈翔. 氮掺杂TiO2可见光光催化剂的制备及性能[J]. 环境工程学报, 2012, 6(9): 3073-3078.
shu
Xia Yong, Wang Haiyan, Shen Xiang. Preparation and performance of nitrogen-doped photocatalyst with visible light response[J]. Chinese Journal of Environmental Engineering, 2012, 6(9): 3073-3078.
Citation: Xia Yong, Wang Haiyan, Shen Xiang. Preparation and performance of nitrogen-doped photocatalyst with visible light response[J]. Chinese Journal of Environmental Engineering, 2012, 6(9): 3073-3078.
shu

氮掺杂TiO2可见光光催化剂的制备及性能

  • 1. 攀枝花市环境保护科学研究所,攀枝花 617000
  • 2. 教育部纳米矿物材料及应用工程研究中心(中国地质大学),武汉 430074
  • 收稿日期:  2011-05-16
基金项目:

中国博士后科学基金资助项目(20090451092)

教育部纳米矿物材料与应用工程研究中心开放基金(10407402)

摘要: 以尿素和钛酸丁酯为原料,通过溶胶-凝胶法低温下制备了高可见光催化活性的氮掺杂TiO2 (NDT)光催化剂,采用XRD、TEM、BET和UV-Vis DRS等测试手段对其进行了表征,并在自制光催化反应器中降解甲基橙评价了样品的光催化活性。结果表明,当氮与钛的摩尔比为0.5∶1时,350℃焙烧的样品(NDT350)具有最佳的可见光光谱吸收和光催化活性,该催化剂为锐钛矿晶相,平均粒径为21 nm,比表面积为89.13 m2/g。可见光辐照下,NDT350降解甲基橙的表观反应速率常数为1.381×10-2 min-1,是商业P25催化剂的16.85倍。NDT350优良的可见光催化活性与其大的比表面积和强烈的可见光光谱吸收有关。

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