Facile morphology control of 3D porous CeO(2) for CO oxidation.

Facile morphology control of 3D porous CeO(2) for CO oxidation.
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用于 CO 氧化的 3D 多孔 CeO2 的简单形貌控制

DOI:
10.1039/c8ra03555e
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发表时间:
2018-06-08
期刊:
影响因子:
3.9
通讯作者:
Li, Qingbiao
Li, Qingbiao
中科院分区:
化学3区
文献类型:
--
作者:
Jiang, Xia;Huang, Xiaochun;Zeng, Wei;Huang, Jiale;Zheng, Yanmei;Sun, Daohua;Li, Qingbiao

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以甘氨酸为生物软模板,通过简单的沉淀法成功地合成了各种形貌的三维多孔CeO2。在合成过程中,它表明,CeO2的形貌依赖于反应物的摩尔比。此外,还考察了不同形貌CeO2对CO氧化的催化性能。具有蝴蝶结形状的CeO2具有较高的氧空位、疏松的孔结构和较大的比表面积,在370 °C下具有良好的CO转化率。
3D porous CeO2 with various morphologies was successfully synthesized via a facile precipitation using glycine as the soft bio-template. During the synthesis, it was demonstrated that the morphology of CeO2 depended on the molar ratio of reactants. Furthermore, the catalytic performance towards CO oxidation of the as-synthesized CeO2 with different morphologies was investigated. CeO2 with a bowknot shape showed excellent catalytic performance, giving complete CO conversion at 370 °C, due to its properties of much higher oxygen vacancies, loosely packed pore structure and larger specific surface area.
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