CeO_2-δ as Electron Donor in Co_0.07Ce_0.93O_2-δ Solid Solution Boosts Alkaline Water Splitting.

ABSTRACT: Optimizing the electronic structure with increasing intrinsic stability is a usual method to enhance the catalysts' performance. Herein, a series of cerium dioxide (CeO_2-δ) based solid solution materials is synthesized via substituting Ce atoms with transition metal (Co, Cu, Ni, etc.), in which Co_0.07Ce_0.93O_2-δ shows optimized band structure because of electron transition in the reaction, namely Co³⁺ (3d⁶4s⁰) + Ce³⁺ (4f¹5d ⁰6s⁰) → Co²⁺ (3d⁷4s⁰) + Ce⁴⁺ (4f⁰5d⁰6s⁰), with more stable electronic configuration. The in situ Raman spectra show a stable F2g peak at ≈452 cm^-1 of Co_0.07

SUBMITTER: Su G 

PROVIDER: S-EPMC11775571 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature