Co/Ni-polyoxotungstate photocatalysts as precursor materials for electrocatalytic water oxidation.

ABSTRACT: An open-core cobalt polyoxometalate (POM) [(A-α-SiW₉O₃₄)Co₄(OH)₃(CH₃COO)₃]^8-Co(1) and its isostructural Co/Ni-analogue [(A-α-SiW₉O₃₄)Co_1.5Ni_2.5(OH)₃(CH₃COO)₃]^8-CoNi(2) were synthesized and investigated for their photocatalytic and electrocatalytic performance. Co(1) shows high photocatalytic O₂ yields, which are competitive with leading POM water oxidation catalysts (WOCs). Furthermore, Co(1) and CoNi(2) were employed as well-defined precursors for heterogeneous WOCs. Annealing at various temperatures afforded amorphous and crystalline CoWO₄- and Co_1.5Ni_2.5WO₄-related nanop

SUBMITTER: Guttinger R 

PROVIDER: S-EPMC8695939 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature