Facile fabrication of flower-like MnO_2 hollow microspheres as high-performance catalysts for toluene oxidation

Gu Wenxiu; Li Chenqi; Qiu Jianhao; Yao Jianfeng

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Facile fabrication of flower-like MnO_2 hollow microspheres as high-performance catalysts for toluene oxidation

机译：面部的花样MnO_2中空微球的制造作为甲苯氧化的高性能催化剂

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A facile and robust interface reaction method for controllable synthesis of hierarchically structured flower-like MnO2 hollow microspheres was developed at a low cost. With MnCO3 microspheres as homologous templates, KMnO4 was used to conduct redox reactions with the surface layer of the MnCO3 microspheres to form porous flower-like MnO2. Then, the internal template was removed by HCl etching to obtain flower-like MnO2 hollow microspheres. HCl plays the dual role of removing the template and generating oxygen vacancies through acid etching. The as-prepared flower-like MnO2 hollow microspheres exhibited excellent low-temperature catalytic activity for toluene oxidation owing to the desirable features of a high specific surface area, abundant oxygen vacancies, high content of Mn4+, a high number of acidic sites and a strong acidity. This work provides a new strategy for the facile construction of high-performance volatile organic compounds oxidation catalysts with industrial application prospects.

机译：以低成本开发了一种用于可控合成的可控合成的容易和鲁棒的界面反应方法。用MnCO 3微球作为同源模板，使用KMNO4与MNCO3微球的表面层进行氧化还原反应，形成多孔花样的MNO2。然后，通过HCl蚀刻除去内部模板以获得花状MnO 2中空微球。 HCL在去除模板并通过酸蚀刻产生氧空位的双重作用。由于高比表面积，丰富的氧空位，高含量的MN4 +，大量酸性位点，酸性位点和强烈的酸性位点和强度，表现出优异的低温催化活性，用于甲苯氧化，其优于高比表面积，高含量的含量，酸性位数以及强度酸度。该作品为具有工业应用前景的高性能挥发性有机化合物氧化催化剂的舒适构造提供了一种新的策略。

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来源
《Journal of Hazardous Materials》 |2021年第15期|124458.1-124458.12|共12页
作者
Gu Wenxiu; Li Chenqi; Qiu Jianhao; Yao Jianfeng;
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作者单位

Jiangnan Univ Sch Chem & Mat Engn Wuxi 214122 Jiangsu Peoples R China;

Jiangnan Univ Sch Chem & Mat Engn Wuxi 214122 Jiangsu Peoples R China;

Nanjing Forestry Univ Coll Chem Engn Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F Nanjing 210037 Jiangsu Peoples R China;

Nanjing Forestry Univ Coll Chem Engn Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F Nanjing 210037 Jiangsu Peoples R China;

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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
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关键词
Toluene catalytic oxidation; Flower-like MnO2 hollow microsphere; Acid etching; Oxygen vacancies; Interface reaction;

机译：甲苯催化氧化;花样MnO2中空微球;酸蚀刻;氧气空位;界面反应;

Facile fabrication of flower-like MnO_2 hollow microspheres as high-performance catalysts for toluene oxidation

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