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Lanthanum molybdenum oxide as a new platform for highly selective adsorption and fast separation of organic dyes

机译：镧氧化镧作为一种新的选择性吸附和快速分离有机染料的新平台

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摘要

Exploration of new adsorbents for quick and highly selective adsorption and efficient separation of dyes in waste water is in urgent demand due to environmental problems. Herein, a new lanthanum molybdenum oxide adsorbent, La2Mo2O9, is prepared by the calcination of a new crystalline compound [La(CH3COO)(H2O)]MoO4 (La-Mo). After the precursor (La-Mo) is calcined at 600 degrees C, the as-prepared La2Mo2O9 (abbr. La-Mo-600) exhibits fast and highly selective adsorption for multi-sulfonic dyes. Furthermore, the dyes adsorbed on La-Mo-600 can be easily eluted by a dilute alkaline solution. Thus, it can be used as a new type of adsorbent to separate dye mixtures. The La-Mo-600 adsorbent possesses excellent stability in the pH range of 1-13 and can be easily re-used seven times with a negligible adsorption decline. This study suggests that the adsorbent, La2Mo2O9, may represent a promising new generation of dye adsorbents that can realize quick adsorption, high selectivity and efficient separation of organic dye mixtures.
机译：由于环境问题，对废水中的快速和高选择性吸附和有效分离染料的快速和高度选择性吸附和有效分离的探索是由于环境问题的迫切需求。这里，通过煅烧新的结晶化合物[LA（CH3COO）（H2O）] MOO4（LA-MO）来制备新的镧氧化钼吸附剂LA2MO2O9。在前体（La-Mo）以600℃煅烧后，制备的AS制备的La2MO2O9（ABBR。La-Mo-600）对多磺酸染料表现出快速且高度选择性的吸附。此外，吸附在La-Mo-600上的染料可以通过稀碱溶液容易地洗脱。因此，它可以用作分离染料混合物的新型吸附剂。 La-Mo-600吸附剂在1-13的pH范围内具有优异的稳定性，并且可以容易地重新使用七次吸附下降。本研究表明，吸附剂La2MO2O9可以代表有希望的新一代染料吸附剂，可以实现有机染料混合物的快速吸附，高选择性和有效分离。

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  • 来源
    《RSC Advances》 |2016年第93期|共8页
  • 作者

    Sun Meng; Ma Yuan-Yuan; Tan Huaqiao; Yan Jian; Zang Hong-Ying; Shi Hong-Fei; Wang Yong-Hui; Li Yang-Guang;

  • 作者单位

    Northeast Normal Univ Key Lab Polyoxometalate Sci Fac Chem Minist Educ Changchun 130024 Peoples R China;

    Northeast Normal Univ Key Lab Polyoxometalate Sci Fac Chem Minist Educ Changchun 130024 Peoples R China;

    Northeast Normal Univ Key Lab Polyoxometalate Sci Fac Chem Minist Educ Changchun 130024 Peoples R China;

    Northeast Normal Univ Key Lab Polyoxometalate Sci Fac Chem Minist Educ Changchun 130024 Peoples R China;

    Northeast Normal Univ Key Lab Polyoxometalate Sci Fac Chem Minist Educ Changchun 130024 Peoples R China;

    Northeast Normal Univ Key Lab Polyoxometalate Sci Fac Chem Minist Educ Changchun 130024 Peoples R China;

    Northeast Normal Univ Key Lab Polyoxometalate Sci Fac Chem Minist Educ Changchun 130024 Peoples R China;

    Northeast Normal Univ Key Lab Polyoxometalate Sci Fac Chem Minist Educ Changchun 130024 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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