Facile fabrication of Ce-decorated composition-tunable Ce@ZnCo2O4 core–shell microspheres for enhanced catalytic propane combustion

Autor:	Yihong Xiao, Zhenni Tan, Chak-Tong Au, Xiuyun Wang, Yangyu Zhang, Lilong Jiang, Yingying Zhan
Rok vydání:	2019
Předmět:	Core shell chemistry.chemical_compound Materials science Fabrication chemistry Chemical engineering Propane General Materials Science Composition (visual arts) Thermal stability Propane combustion Microsphere Catalysis
Zdroj:	Nanoscale. 11:4794-4802
ISSN:	2040-3372 2040-3364
Popis:	The design of heterogeneous catalysts of high efficiency for complete oxidation of volatile organic compounds (VOCs) is a challenge. In the present study, propane is adopted as a VOC representative, and core–shell structured ZnCo2O4@CeO2 catalysts with Ce decoration were synthesized and tested for propane combustion. Through SEM, STEM, and EDX analyses, the structure of the ZnCo2O4@CeO2 catalysts was characterized. The results of activity evaluation demonstrate that the presence of Ce can significantly promote catalytic performance, and the most suitable Ce content has been verified. Furthermore, the optimized ZnCo2O4@CeO2 catalyst exhibits excellent thermal stability and strong resistance toward water. The superior catalytic performance over the optimized ZnCo2O4@CeO2 catalyst is attributed to the high concentration of surface lattice oxygen (O2−) and the presence of strong interactions between Ce and Co.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::02a3826d4edc76f19fccd9ab6a696348 https://doi.org/10.1039/c8nr10523e Zobrazit plný text záznamu