Publication

Hydrogen Peroxide Generation at LiquidlLiquid Interface under Conditions Unfavorable for Proton Transfer from Aqueous to Organic Phase

Author(s): Jedraszko, Justyna and Nogala, Wojciech and Adamiak, Wojciech and Ewa and Lubarska-Radziejewska, Iwona and Girault, Hubert H. and Opallo, Marcin
Title: Hydrogen Peroxide Generation at LiquidlLiquid Interface under Conditions Unfavorable for Proton Transfer from Aqueous to Organic Phase
Abstract: The charge transfer processes across the interface between two electrolyte solutions (ITIES) can be employed for energy and conversion, solvent extraction, or sensing or in life Among them are catalytic reactions, which have only been studied. Here H2O2 generation is studied with (DMFc) as electron donor at the interface between perchlorate solution in 1,2-dichloroethane (1,2-DCE) aqueous HClO4. These conditions are unfavorable for proton transfer ITIES because of positive Galvani potential difference. with 1,2-DCE droplet modified electrode shows that DMFc is accompanied by ClO4- insertion into the organic phase. The progress was followed by UV-vis spectroscopy, voltammetry, and electrochemical microscopy (SECM). In the first and last horseradish permddase was used as catalyst. It is concluded that is reduced to H2O2 at the liquidlliquid interface not only under when proton transfer to organic phase is strongly favored, namely, when Galvani potential difference is negative
Pages: 20681-20688
Journal: JOURNAL OF PHYSICAL CHEMISTRY C
Publisher: AMER CHEMICAL SOC
Addres: 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Volume: 117
ID: ISI:000326366800035
Year: 2013
DOI: 10.1021/jp406422d