Unique activity of a Keggin POM for efficient heterogeneous electrocatalytic OER

Chandani Singh, Dan Meyerstein, Zorik Shamish, Dror Shamir, Ariela Burg

פרסום מחקרי: פרסום בכתב עתמאמרביקורת עמיתים

3 ציטוטים ‏(Scopus)

תקציר

Polyoxometalates (POMs) have been well studied and explored in electro/photochemical water oxidation catalysis for over a decade. The high solubility of POMs in water has limited its use in homogeneous conditions. Over the last decade, different approaches have been used for the heterogenization of POMs to exploit their catalytic properties. This study focused on a Keggin POM, K6[CoW12O40], which was entrapped in a sol-gel matrix for heterogeneous electrochemical water oxidation. Its entrapment in the sol-gel matrix enables it to catalyze the oxygen evolution reaction at acidic pH, pH 2.0. Heterogenization of POMs using the sol-gel method aids in POM's recyclability and structural stability under electrochemical conditions. The prepared sol-gel electrode is robust and stable. It achieved electrochemical water oxidation at a current density of 2 mA/cm2 at a low overpotential of 300 mV with a high turnover frequency (TOF) of 1.76 [mol O2 (mol Co)−1s−1]. A plausible mechanism of the electrocatalytic process is presented.

שפה מקוריתאנגלית
מספר המאמר109551
כתב עתiScience
כרך27
מספר גיליון4
מזהי עצם דיגיטלי (DOIs)
סטטוס פרסוםפורסם - 19 אפר׳ 2024

טביעת אצבע

להלן מוצגים תחומי המחקר של הפרסום 'Unique activity of a Keggin POM for efficient heterogeneous electrocatalytic OER'. יחד הם יוצרים טביעת אצבע ייחודית.

פורמט ציטוט ביבליוגרפי