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Direct Four‐Electron Reduction of O 2 to H 2 O on TiO 2 Surfaces by Pendant Proton Relay
Author(s) -
Sheng Hua,
Ji Hongwei,
Ma Wanhong,
Chen Chuncheng,
Zhao Jincai
Publication year - 2013
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201304481
Subject(s) - proton , relay , reduction (mathematics) , chemistry , content (measure theory) , phosphate , combinatorial chemistry , computer science , physics , organic chemistry , power (physics) , geometry , mathematics , quantum mechanics , mathematical analysis
Relay race : By using polyprotic‐acid‐based pendant proton relays (phosphate, L ‐glutamic acid, and malonic acid), the oxygen reduction reaction (ORR) on a TiO 2 surface is switched from a single‐electron process to a concerted 4 e − /4 H + reduction to H 2 O. In contrast, monocarboxylic acids (PA and AA) without pendant proton relays only enhance the ORR reduction rate but barely change the reaction pathway.