General fabrication of MCo₂O₄@CeO₂ (M $=$ Ni, Cu, Zn, Mn) core@shell nanospheres and their catalytic performances in CO oxidation

School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, P. R. China

Low Carbon Energy Institute, China University of Mining and Technology, Xuzhou 221008, P. R. China

Key Laboratory of Coal-Based CO2 Capture and Geological Storage of Jiangsu Province, China University of Mining and Technology, Xuzhou 221008, P. R. China