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多级花状Cu/TiO2光催化还原硝基苯制苯胺的研究

孙红华 张念陈 孙彪 李鹏 许凤霞 王金果

孙红华, 张念陈, 孙彪, 李鹏, 许凤霞, 王金果. 多级花状Cu/TiO2光催化还原硝基苯制苯胺的研究[J]. 上海工程技术大学学报, 2023, 37(4): 343-350. doi: 10.12299/jsues.22-0199
引用本文: 孙红华, 张念陈, 孙彪, 李鹏, 许凤霞, 王金果. 多级花状Cu/TiO2光催化还原硝基苯制苯胺的研究[J]. 上海工程技术大学学报, 2023, 37(4): 343-350. doi: 10.12299/jsues.22-0199
SUN Honghua, ZHANG Nianchen, SUN Biao, LI Peng, XU Fengxia, WANG Jinguo. Study on photocatalytic nitrobenzene reduction to aniline over hierarchical flower-like Cu/TiO2[J]. Journal of Shanghai University of Engineering Science, 2023, 37(4): 343-350. doi: 10.12299/jsues.22-0199
Citation: SUN Honghua, ZHANG Nianchen, SUN Biao, LI Peng, XU Fengxia, WANG Jinguo. Study on photocatalytic nitrobenzene reduction to aniline over hierarchical flower-like Cu/TiO2[J]. Journal of Shanghai University of Engineering Science, 2023, 37(4): 343-350. doi: 10.12299/jsues.22-0199

多级花状Cu/TiO2光催化还原硝基苯制苯胺的研究

doi: 10.12299/jsues.22-0199
详细信息
    作者简介:

    孙红华(1994−),男,硕士,研究方向为柴油车尾气净化. E-mail: 18605625362@163.com

    通讯作者:

    王金果(1982−),男,教授,博士,研究方向为环境污染控制. E-mail: Jinguowang1982@sues.edu.cn

  • 中图分类号: O643.32

Study on photocatalytic nitrobenzene reduction to aniline over hierarchical flower-like Cu/TiO2

  • 摘要: 采用醇解溶剂热法制备金属Cu修饰的系列多级花状TiO2光催化剂(X% Cu/TiO2),并以可见光光催化硝基苯还原制苯胺为模型反应评价其光催化性能. 结果显示:3.3% Cu/TiO2光催化剂展现出优异的催化活性,可见光催化3 h硝基苯的转化率达到83%. 主要原因有两个方面:多级介孔结构增加了催化剂比表面积,促进了硝基苯吸附、扩散及其与催化剂的接触;金属Cu的引入降低了催化剂的带宽,增强了光生电子和空穴的分离能力,进而提升了其光催化性能. 此外,3.3% Cu/TiO2光催化剂表现出良好的稳定性,具有一定的潜在实用价值.
  • 图  1  不同催化剂的场发射扫描电镜图

    Figure  1.  FESEM images of different catalysts

    图  2  不同催化剂的N2吸脱附等温线和孔径分布曲线

    Figure  2.  N2 adsorption-desorption isotherms and pore size distribution curves of different catalysts

    图  3  不同催化剂的XRD谱图

    Figure  3.  XRD spectrogram of different catalysts

    图  4  不同催化剂的拉曼光谱

    Figure  4.  Raman spectrum of different catalysts

    图  5  不同催化剂的XPS图谱

    Figure  5.  XPS spectra of different catalysts

    图  6  不同催化剂的光电流响应图

    Figure  6.  Photocurrent response of different catalysts

    图  7  不同催化剂的紫外可见漫反射光谱图

    Figure  7.  Uv-vis diffuse reflection spectra of different catalysts

    图  8  不同催化剂的硝基苯光催化还原制苯胺的光催化活性

    Figure  8.  Photocatalytic activities of different catalysts for nitrobenzene reduction to aniline

    图  9  不同催化剂的对位取代基硝基苯光催化还原制苯胺活性图

    Figure  9.  Photocatalytic activities of different catalysts for reduction nitrobenzene with various p-substituents to anilines

    图  10  6次循环后3.3% Cu/TiO2的稳定性测试

    Figure  10.  Recycling test of 3.3% Cu/TiO2 after six cycles

    表  1  不同催化剂的物理结构参数

    Table  1.   Physical parameters of different catalysts

    催化剂比表面积/
    (m2·g−1)
    孔容/
    (cm3·g−1)
    孔径/
    nm
    晶粒尺寸/
    nm
    TiO2220.091622
    0.5% Cu/TiO2280.101422
    2% Cu/TO2280.111521
    3.3% Cu/TiO2470.262121
    4.1% Cu/TiO2390.242321
    5% Cu/TiO2390.232321
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-07-03
  • 刊出日期:  2023-12-30

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