Tuning Redox Active Polyoxometalates for Efficient Electron-Coupled Proton-Buffer-Mediated Water Splitting.

ABSTRACT: We present strategies to tune the redox properties of polyoxometalate clusters to enhance the electron-coupled proton-buffer-mediated water splitting process, in which the evolution of hydrogen and oxygen can occur in different forms and is separated in time and space. By substituting the heteroatom template in the Keggin-type polyoxometalate cluster, H₆ ZnW₁₂ O₄₀ , it is possible to double the number of electrons and protonation in the redox reactions (from two to four). This increase can be achieved with better matching of the energy levels as indicated by the redox potentials, compared to the ones of well-studied H₃ PW₁₂ O₄₀ and H₄ SiW₁₂ O₄₀ . This means that H₆ ZnW₁₂

SUBMITTER: Lei J 

PROVIDER: S-EPMC6851869 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature