Polyoxometalate-like sub-nanometer molybdenum(vi)-oxo clusters for sensitive, selective and stable H2O2 sensing

Abstract

Polyoxometalate-like molybdenum(VI)-oxo clusters ([Mo-oxo]_n, n = 1–20) deposited on high surface-area carbon are developed as a biosensor for non-enzymatic electrochemical H₂O₂ detection. The sensor exhibits excellent electrocatalytic performance with a low detection limit, wide linear range, excellent sensitivity and stability. The composite can be stably deposited on screen-printed electrodes which combine microlitre analyses, long shelf-life and re-usability.