Effects of heteroatom doping on hydrogen uptake in tungsten oxide.

ABSTRACT: Redox-active transition metal oxides (TMOs) that can undergo proton-insertion coupled electron transfer (PICET) are promising candidates for catalyzing molecular conversion reactions which require the transfer of hydrogen atoms (or the thermochemical equivalent, H⁺, e^-). Herein, we studied the effects of isovalent (Mo⁶⁺) and aliovalent (V⁵⁺ and Nb⁵⁺) heteroatom doping on the electrochemical PICET behavior of monoclinic tungsten oxide (WO₃). Cyclic voltammetry in aqueous acidic electrolytes shows that the addition of redox-active heteroatoms (Mo⁶⁺ and V⁵⁺) leads to systematic shifts in redox couple half-wave potentials (E _1/2), broadening, and an overall decrease in the current response

SUBMITTER: Holzapfel NP 

PROVIDER: S-EPMC12805440 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature