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首页> 外文期刊>Journal of Hazardous Materials >Photocatalytic degradation of 2,4-dichlorophenol with MgAlTi mixed oxides catalysts obtained from layered double hydroxides
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Photocatalytic degradation of 2,4-dichlorophenol with MgAlTi mixed oxides catalysts obtained from layered double hydroxides

机译：层状双氢氧化物制得的MgAlTi混合氧化物催化剂对2,4-二氯苯酚的光催化降解

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摘要

MgAl and MgAlTi mixed oxides were obtained from the thermal treatment of LDH materials synthesized by the sol-gel method; these materials were characterized by N_2 physisorption, XRD, UV-vis, XPS, EDS-SEM and TEM techniques. According to the results, Ti was incorporated in the LDH layer when content in the material was low. The MgAl and MgAlTi mixed oxides were evaluated in the photo-degradation of 2,4-dichlorophenol (2,4-DCP) in the presence of UV light. A superior efficiency in the photo-degradation of 2,4-DCP, in comparison with the Degussa P-25 TiO_2 reference catalyst was observed, reaching a total decomposition of the 2,4-DCP molecule in less than 60 min. According to the results, Ti was incorporated in the LDH layer when the content in the material was low. The MgAl and MgAlTi mixed oxides were evaluated in the photo-degradation of 2,4-dichlorophenol (2,4-DCP) in the presence of UV light. A superior efficiency in the photo-degradation of 2,4-DCP with the MgAl and MgAlTi mixed oxides, in comparison with the Degussa P-25 TiO_2 reference catalyst was observed, reaching a total decomposition of the 2,4-DCP molecule in less than 60 min.
机译：MgAl和MgAlTi混合氧化物是通过对溶胶-凝胶法合成的LDH材料进行热处理得到的。这些材料通过N_2物理吸附，XRD，UV-vis，XPS，EDS-SEM和TEM技术表征。根据结果​​，当材料中的含量低时，Ti被掺入LDH层中。在2,4-二氯苯酚（2,4-DCP）在紫外光的存在下光降解过程中，对MgAl和MgAlTi混合氧化物进行了评估。与Degussa P-25 TiO_2参比催化剂相比，观察到2,4-DCP的光降解效率更高，在不到60分钟的时间内即可完全分解2,4-DCP分子。根据结果​​，当材料中的含量低时，Ti被掺入LDH层中。在2,4-二氯苯酚（2,4-DCP）在紫外光存在下的光降解条件下评估了MgAl和MgAlTi混合氧化物。与Degussa P-25 TiO_2参比催化剂相比，使用MgAl和MgAlTi混合氧化物对2,4-DCP进行光降解的效率更高，从而在更少的时间内实现了2,4-DCP分子的总分解。超过60分钟

著录项

  • 来源
    《Journal of Hazardous Materials》 |2013年第1期|67-72|共6页
  • 作者

    G.Mendoza-Damian; F.Tzompantzi; A. Mantilla; A. Barrera; L. Lartundo-Rojas;

  • 作者单位

    Depto. de Quimica, Area de Catdlisis, Universidad Autonoma Metropolitana - Iztapalapa, C.P. 09340 Mexico, D.F., Mexico;

    Depto. de Quimica, Area de Catdlisis, Universidad Autonoma Metropolitana - Iztapalapa, C.P. 09340 Mexico, D.F., Mexico;

    CICATA-Legaria, Institute Politecnico Nacional, Legaria No. 694, Mexico 11500, D.F., Mexico;

    Lab. de Nanomateriales Cataliticos, Centro Universitario de la Cienega, Universidad de Cuadalajara, Ocotlan Jal., C.P. 097820, Mexico;

    Centro de Nanociencias y Micro y Nanotecnologias, Institute Politecnico Nacional, Luis Enrique Erro s, Zacatenco, 07738 Mexico, D.F., Mexico;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    MgAlTi mixed oxide photocatalysts; 2,4-Dichlorophenol photo-degradation; MgAlTi LDH sol-gel synthesis; MgAlTi photocatalysts; XPS analysis;

    机译：MgAlTi混合氧化物光催化剂;2,4-二氯苯酚的光降解;MgAlTi LDH溶胶-凝胶合成;MgAlTi光催化剂;XPS分析;

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