Nanoscale Grain Boundary-Weakened Ce–O Covalency and Surface Confinement Intrinsically Boosting Ceria Surface Oxygen Reactivity - Weixin Zhao; Wenyu Jia; Jun Zhou; Tianyu Zhai; Yuefeng Wu; Zohaib Rana; Peng Sun; Yimeng Liu; Shuyuan Zhou; Guolei Xiang; Xun Wang (Journal of the American Chemical Society, 2025)