Unraveling the formation of oxygen vacancies on the surface of transition metal-doped ceria utilizing artificial intelligence
Ning Xu, Liangliang Xu, Yue Wang, Wen Liu, Wenwu Xu, Xiaojuan Hu, Zhongkang Han
Abstract
transition metal doping by combining first-principles calculations and analytical learning. We elucidate the underlying mechanism driving the formation of oxygen vacancies using combined symbolic regression and data analytics techniques. The results show that the Fermi level of the system and the electronegativity of the dopants are the paramount parameters (features) influencing the formation of oxygen vacancies. These insights not only enhance our understanding of the oxygen vacancy formation mechanism in ceria-based materials to improve their functionality but also potentially lay the groundwork for future strategies in the rational design of other transition metal oxide-based catalysts.