ChemInform Abstract: ELECTROCATALYSIS OF OXYGEN AND HYDROGEN PEROXIDE REDUCTION BY UPD OF BISMUTH ON POLY‐ AND MONOCRYSTALLINE GOLD ELECTRODES IN ACID SOLUTIONS

Abstract

Der elektrokatalytische Einfluß einer underpotential deposition (UPD) von Bi auf die kathodische Reduktion von O2 (O2 + 2H+ + 2e‐→ H2O2) und H2O2 (H2O2 + 2 H+ + 2e‐→ 2 H2O) wurde an poly‐ und monokristallinen (111)‐ und (100)‐Au‐Elektroden in 0.5 M HClO4 untersucht.

Efficient Dechlorination of α-Halocarbonyl and α-Haloallyl Pollutants by Electroreduction on Bismuth

“…Interesting catalytic properties toward the reduction of O 2 and H 2 O 2 have been also observed with electrodes prepared by the underpotential deposition of Bi on Au(111) surfaces. 10,11 Although dioxygen reduction occurs via a fourelectron pathway, the formation of superoxide on the surface after the transfer of one electron suggested a serial mechanism. 12 More recently, bismuth metal has shown interesting catalytic properties for the selective hydrogenation of biomass chemicals such as 5-hydroxymethylfurfural 13,14 and glucose 15 and for the electroreduction of CO 2 toward the formation of formate or carbon monoxide depending on the nature of the electrolytic medium.…”