标题：Room temperature interfacial reaction-directed synthesis of hierarchically porous ceria from a water-soluble precursor
作者：Chen, Guozhu;Xu, Qihui;Wang, Yong;Song, Guolong;Fan, Weiliu
作者机构：[Chen, G] School of Chemistry and Chemical Engineering, University of Jinan, No. 336 Nanxinzhuang west road, Jinan, China;[ Xu, Q] School of Chemistry 更多
通讯作者地址：[Chen, GZ]Univ Jinan, Sch Chem & Chem Engn, 336 Nanxinzhuang West Rd, Jinan, Peoples R China.
来源：Journal of Materials Chemistry, A. Materials for energy and sustainability
摘要：Unlike the conventional calcination of cerium precursors at elevated temperature, hierarchically porous ceria was successfully synthesized via an interfacial reaction between the water-soluble cerium sulfate (Ce-2(SO4)(3)) precursor and NaOH in ethanol at room temperature. Neither additional surfactant molecules nor calcination was employed during the whole preparation process. It was found that the as-prepared ceria inherited well the shape and dimensions of the hierarchically flowerlike Ce-2(SO4)(3) precursor after the interfacial reaction. The concentration of sulfuric acid was demonstrated to play a great role in controlling the precursor\'s morphology. Compared with ceria derived from direct calcination of the same Ce-2(SO4)(3) precursor, the one obtained from the interfacial reaction was far more reactive in CO oxidation due to its well-retained hierarchically porous morphology and high surface area. This work is expected to open a new, simple avenue for the synthesis of hollow nanomaterials from water-soluble precursors.