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Synthesis and characterization of alkali metal molybdates with high catalytic activity for dye degradation

机译：染料降解高催化活性碱金属钼酸盐的合成与表征

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摘要

In this contribution, the synthesis and catalytic activity of alkali metal molybdates for the degradation of cationic dyes under ambient conditions were systematically studied. The influences of Na and Mo precursors, Na/ Mo ratio, and calcination temperature on the chemical composition and catalytic activity of sodium molybdates were investigated. Among all the obtained sodium molybdates, Na2Mo2O7 showed the highest catalytic activity for the degradation of cationic red GTL, safranine T, and methylene blue, etc. Particularly for cationic red GTL, a degradation efficiency of 98.5% could be achieved within 5 min. The optimal synthesis conditions for the formation of pure Na2Mo2O7 are also presented. The morphology and structure of Na2Mo2O7 were carefully characterized using XRD, SEM, HR-TEM and SAED, and FT-IR. In addition to sodium molybdates, potassium and lithium molybdates were also similarly synthesized, which also showed excellent catalytic activities for dye degradation. This work will shed light on the synthesis of novel active catalysts for the catalytic wet air oxidation of dyes.
机译：在本贡献中，系统地研究了在环境条件下阳离子染料降解的碱金属钼酸盐的合成和催化活性。研究了Na和Mo前体，Na / Mo比和煅烧温度对钼酸钠的化学成分和催化活性的影响。在所有得到的钼酸钠中，Na 2 MO 2 O 7显示出阳离子红色GTL，脱甘蓝醇T和亚甲基蓝的降解的最高催化活性。特别是对于阳离子红色GT1，可以在5分钟内实现98.5％的降解效率。还介绍了形成纯Na2MO2O7的最佳合成条件。使用XRD，SEM，HR-TEM和SAED和FT-IR仔细描述Na2MO2O7的形态和结构。除了钼酸钠外，还类似地合成钾和锂钼酸盐，其还显示出用于染料降解的优异的催化活性。这项工作将阐明催化湿空气氧化的新型活性催化剂的合成。

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  • 来源
    《RSC Advances》 |2016年第59期|共11页
  • 作者

    Zhang Yili; Zhang Zhang; Zhou Tuantuan; Lu Peng; Gao Yanshan; Yu Feng; Umar Ahmad; Wang Qiang;

  • 作者单位

    Beijing Forestry Univ Coll Environm Sci &

    Engn 35 Qinghua East Rd Beijing 100083 Peoples R China;

    Beijing Forestry Univ Coll Environm Sci &

    Engn 35 Qinghua East Rd Beijing 100083 Peoples R China;

    Beijing Forestry Univ Coll Environm Sci &

    Engn 35 Qinghua East Rd Beijing 100083 Peoples R China;

    Beijing Forestry Univ Coll Environm Sci &

    Engn 35 Qinghua East Rd Beijing 100083 Peoples R China;

    Beijing Forestry Univ Coll Environm Sci &

    Engn 35 Qinghua East Rd Beijing 100083 Peoples R China;

    Shihezi Univ Sch Chem &

    Chem Engn 221 Beisi Rd Shihezi 832003 Peoples R China;

    Najran Univ PCSED Coll Arts &

    Sci Dept Chem Najran 11001 Saudi Arabia;

    Beijing Forestry Univ Coll Environm Sci &

    Engn 35 Qinghua East Rd Beijing 100083 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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