Highly active CeO2 hollow-shell spheres with Al doping
Article
Article Title | Highly active CeO2 hollow-shell spheres with Al doping |
---|---|
ERA Journal ID | 214127 |
Article Category | Article |
Authors | Wang, Zumin (Author), Jiang, Shuaiyu (Author), Li, Yanhui (Author), Xu, Pengfei (Author), Zhao, Kun (Author), Zong, Lingbo (Author), Wang, Hao (Author) and Yu, Ranbo (Author) |
Journal Title | Science China Materials |
Journal Citation | 60 (7), pp. 646-653 |
Number of Pages | 8 |
Year | 2017 |
Publisher | Zhongguo Kexue Zazhishe, Science in China Press |
Place of Publication | China |
ISSN | 2095-8226 |
2199-4501 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s40843-017-9042-0 |
Web Address (URL) | https://link.springer.com/article/10.1007/s40843-017-9042-0 |
Abstract | Metal oxide hollow structures are of great interest in many current and emerging areas of technology. This paper presents a facile and controlled protocol for the synthesis of Al-doped CeO2 hollow-shell spheres (CHS), where the dopant confers enhanced stability and activity to the material. These Al-doped CeO2 hollow-shell spheres (ACHS) possess a controllable shell number of up to three, where the sizes of the exterior, middle, and interior spheres were about 250‒100 nm,150‒50 nm, and 40‒10 nm, respectively, and the average shell thickness was ~15 nm. The thermal stability of the ACHS structure was enhanced by the homogeneous incorporation of Al atoms, and more active oxygen species were present compared with those in the non-doped congener. Au NPs supported on ACHS (Au/ACHS) showed superior catalytic performance for the reduction of p-nitrophenol. For the same Au NP content, the reaction rate constant (k) of the Au/ACHS was nearly twice that of the non-doped Au/CHS, indicating that Al doping is promising for improving the performance of inert or unstable oxides as catalyst supports. |
Keywords | catalyst; CeO2 ; doping; hollow structure |
ANZSRC Field of Research 2020 | 401605. Functional materials |
Byline Affiliations | University of Science and Technology Beijing, China |
Centre for Future Materials | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6zwz/highly-active-ceo2-hollow-shell-spheres-with-al-doping
93
total views4
total downloads1
views this month0
downloads this month