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Induction of Concerted Proton-Coupled Electron Transfer during Oxygen Evolution on Hematite Using Lanthanum Oxide as a Solid Proton Acceptor
ACS Catalysis ( IF 11.3 ) Pub Date : 2019-09-12 , DOI: 10.1021/acscatal.9b02936
Toshihiro Takashima 1, 2 , Koki Ishikawa 2 , Hiroshi Irie 1, 2
Affiliation  

The utilization of a support material has been an effective method for the management of proton transfer on catalytic active centers. Previous studies showed that the large overpotential of α-Fe2O3 for the oxygen evolution reaction (OER) resulted from the sequential transfer of electrons and protons. Here, by combining α-Fe2O3 with La2O3, which functions as a solid proton acceptor, concerted proton–electron transfer (CPET) was induced. The induction of CPET facilitated the formation of intermediate species, leading to the OER activity enhancement at neutral pH. This work may provide useful insight for the design of promising OER catalysts, which is pivotal for energy conversion.

中文翻译:

氧化镧作为固体质子受体在赤铁矿上析氧过程中的协同质子耦合电子转移的诱导

载体材料的利用已经是管理催化活性中心上质子转移的有效方法。以前的研究表明,大的超电势的α-Fe的2 ø 3为析氧反应(OER)是由于电子和质子的连续传输。这里,由的α-Fe相结合2 ö 3与拉2 ö 3,其功能是作为固体质子受体,协同质子-电子转移(CPET)诱导。CPET的诱导促进了中间物种的形成,导致在中性pH下OER活性增强。这项工作可能为有希望的OER催化剂的设计提供有用的见识,这对于能量转换至关重要。
更新日期:2019-09-13
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