Unraveling the promotional effects of K-doping on the mobility of surface oxygen species of CoCr2O4 for improved formaldehyde catalytic oxidation: The weakened metal-oxygen bond strength - Erhao Gao; Qi Jin; Tiantian Zhang; Li Han; Ning Li; Jiacheng Xu; Shuiliang Yao; Zuliang Wu; Jing Li; Jiali Zhu; Wei Wang (Chemical Engineering Journal, 2023)