Influence of iron doping on tetravalent nickel content in catalytic oxygen evolving films

被引：571

作者：

Li, Nancy ^{[1
]}

Bediako, D. Kwabena ^{[1
]}

Hadt, Ryan G. ^{[2
]}

Hayes, Dugan ^{[2
]}

Kempa, Thomas J. ^{[1
]}

von Cube, Felix ^{[3
]}

Bell, David C. ^{[3
]}

Chen, Lin X. ^{[2
,4
]}

Nocera, Daniel G. ^{[1
]}

机构：

[1] Harvard Univ, Dept Chem & Biol Chem, Cambridge, MA 02138 USA

[2] Argonne Natl Lab, Chem Sci & Engn Div, Lemont, IL 60439 USA

[3] Harvard Univ, Ctr Nanoscale Syst, Cambridge, MA 02138 USA

[4] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2017年 / 114卷 / 07期

基金：

美国国家科学基金会;

关键词：

water splitting; renewable energy; electrocatalysis; oxygen evolution reaction; catalysis; RAY-ABSORPTION-SPECTROSCOPY; WATER OXIDATION CATALYSTS; COUPLED ELECTRON-TRANSFER; O BOND FORMATION; EVOLUTION REACTION; PHOTOSYSTEM-II; OXIDE; ELECTROCATALYSTS; COMPLEXES; MECHANISM;

D O I：

10.1073/pnas.1620787114

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Iron doping of nickel oxide films results in enhanced activity for promoting the oxygen evolution reaction (OER). Whereas this enhanced activity has been ascribed to a unique iron site within the nickel oxide matrix, we show here that Fe doping influences the Ni valency. The percent of Fe3+ doping promotes the formation of formal Ni4+, which in turn directly correlates with an enhanced activity of the catalyst in promoting OER. The role of Fe3+ is consistent with its behavior as a superior Lewis acid.

引用

页码：1486 / 1491

页数：6

共 69 条

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