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Oxygen Reduction Reaction for Generating H 2 O 2 through a Piezo‐Catalytic Process over Bismuth Oxychloride
Author(s) -
Shao Dengkui,
Zhang Ling,
Sun Songmei,
Wang Wenzhong
Publication year - 2018
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201702405
Subject(s) - bismuth , catalysis , oxygen , piezoelectricity , electric field , oxygen reduction reaction , materials science , chemistry , nanotechnology , chemical engineering , electrode , physics , electrochemistry , organic chemistry , composite material , quantum mechanics , engineering
Oxygen reduction reaction (ORR) for generating H 2 O 2 through green pathways have gained much attention in recent years. Herein, we introduce a piezo‐catalytic approach to obtain H 2 O 2 over bismuth oxychloride (BiOCl) through an ORR pathway. The piezoelectric response of BiOCl was directly characterized by piezoresponse force microscopy (PFM). The BiOCl exhibits efficient catalytic performance for generating H 2 O 2 (28 μmol h −1 ) only from O 2 and H 2 O, which is above the average level of H 2 O 2 produced by solar‐to‐chemical processes. A piezo‐catalytic mechanism was proposed: with ultrasonic waves, an alternating electric field will be generated over BiOCl, which can drive charge carriers (electrons) to interact with O 2 and H 2 O, then to form H 2 O 2 .