Immobilization of a Molecular Ruthenium Catalyst on Hematite Nanorod Arrays for Water Oxidation with Stable Photocurrent

ChemSusChem
Ke FanLicheng Sun

Abstract

Photoelectrochemical (PEC) cells for light-driven water splitting are prepared using hematite nanorod arrays on conductive glass as the photoanode. These devices improve the photocurrent of the hematite-based photoanode for water splitting, owing to fewer surface traps and decreased electron recombination resulting from the one-dimensional structure. By employing a molecular ruthenium co-catalyst, which contains a strong 2,6-pyridine-dicarboxylic acid anchoring group at the hematite photoanode, the photocurrent of the PEC cell is enhanced with high stability for over 10 000 s in a 1 m KOH solution. This approach can pave a route for combining one-dimensional nanomaterials and molecular catalysts to split water with high efficiency and stability.

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Citations

Jan 26, 2016·Journal of the American Chemical Society·Marcel SchreierMichael Grätzel
Nov 18, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Andrey ShatskiyBjörn Åkermark
Jul 18, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Shengbo ZhangXiao Liu
Jul 27, 2017·Chemical Society Reviews·J LiG R Patzke
Mar 13, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Yuan ZhaoXiao Liu
Mar 22, 2019·Chemical Society Reviews·Biaobiao Zhang, Licheng Sun
Mar 21, 2020·Advanced Science·Sitaramanjaneya Mouli ThalluriLifeng Liu
Oct 24, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Guangshun YiYugen Zhang

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