标题：Template-free hydrothermal synthesis and CO oxidation properties of flower-like CeO2nanostructures
作者：Xie, Anran ;Liu, Wei ;Wang, Shuping ;Liu, Xiufang ;Zhang, Jingcai ;Yang, Yanzhao
作者机构：[Xie, Anran ;Liu, Wei ;Wang, Shuping ;Liu, Xiufang ;Zhang, Jingcai ;Yang, Yanzhao ] Key Laboratory for Special Functional Aggregate Materials of Educa 更多
来源：Materials Research Bulletin
摘要：KClO3, a strong oxidant, was employed in the template-free hydrothermal synthesis of flower-like CeO2. The structure and physicochemical properties of the samples were characterized via the XRD, N2adsorption, FE-SEM, TEM, HRTEM, H2-TPR techniques. Through a series of experiments, the formation of flower-like CeO2is strongly dependent on reaction time. Meanwhile, the transformation of two phases (Ce(HCOO)3and CeO2) and a possible mechanism for the formation of flower-like CeO2were preliminarily proposed. The result shows that the H2consumption for surface reduction of the flower-like CeO2sample is significantly higher than the commercial CeO2sample and the BET surface area of the flower-like ceria nanoparticles is 38.8 m2/g, which are benificial to the catalytic reaction. Compared with the commercial CeO2, the as-prepared flower-like CeO2possesses the better catalytic performance for CO conversion. © 2014 Elsevier Ltd.