Ag-doping weakens metal-oxygen bond strength in CuCo2O4 to boost CO-SCR performance under oxygen-containing conditions: The synergistic role of surface oxygen vacancy and Ag sites - Baoyi Wang; Pingting Gao; Fei Shen; Nan Ma; Jiali Zhu; Jing Li; Wei Wang; Shuiliang Yao; Nan Xu; Erhao Gao; Zuliang Wu (Chemical Engineering Journal, 2025)