In:
Chemical Communications, Royal Society of Chemistry (RSC), Vol. 58, No. 76 ( 2022), p. 10683-10686
Abstract:
Electrochemical synthesis of H 2 O 2 via a two-electron oxygen reduction reaction (2e − ORR) has emerged as a promising alternative to the anthraquinone process. However, the strong competition from the 4e − pathway severely limits its activity and selectivity, especially for Pt-based catalysts. Herein, ultrathin single-crystal PtSe 2 nanosheets were successfully prepared via an in situ selenization process using commercial Pt/C as a precursor, demonstrating an exclusive 2e − ORR pathway compared to the 4e − pathway of commercial Pt/C, delivering a high H 2 O 2 selectivity over a wide pH range ( 〉 80%, up to 94.1%). Furthermore, in situ infrared spectroscopy results revealed Pt as an active center, accompanied by the key intermediate OOH* adsorption and HOOH formation.
Type of Medium:
Online Resource
ISSN:
1359-7345
,
1364-548X
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
1472881-3
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