Exploring the influence of chemical state of Cu species on CO-SCR performance in spinel-type CuM2O4 (M = Co, Mn, Fe, Ni, and Cr): The synergy between Cu2+ and surface oxygen vacancy - Qi Jin; Li Han; Ning Li; Tiantian Zhang; Erhao Gao; Meng Yao; Shuiliang Yao; Zuliang Wu; Jing Li; Jiali Zhu; Wei Wang (Fuel, 2024)