title: Immobilization of a Molecular Ruthenium Catalyst on Hematite Nanorod Arrays for Water Oxidation with Stable Photocurrent.
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.
authors: Department of Chemistry, KTH Royal Institute of Technology, 10044, Stockholm, Sweden.
authors: Ke
authors: K
authors: Fan
authors: Department of Chemistry, KTH Royal Institute of Technology, 10044, Stockholm, Sweden.
authors: Fusheng
authors: F
authors: Li
authors: Department of Chemistry, KTH Royal Institute of Technology, 10044, Stockholm, Sweden.
authors: Lei
authors: L
authors: Wang
authors: Department of Chemistry, KTH Royal Institute of Technology, 10044, Stockholm, Sweden.
authors: Quentin
authors: Q
authors: Daniel
authors: Berzelii Center EXAELENT on Porous Materials and, Department of Materials and Environmental Chemistry, Stockholm University, 10691, Stockholm, Sweden.
authors: Hong
authors: H
authors: Chen
authors: Department of Chemistry, KTH Royal Institute of Technology, 10044, Stockholm, Sweden.
authors: Erik
authors: E
authors: Gabrielsson
authors: Berzelii Center EXAELENT on Porous Materials and, Department of Materials and Environmental Chemistry, Stockholm University, 10691, Stockholm, Sweden.
authors: Junliang
authors: J
authors: Sun
authors: Department of Chemistry, KTH Royal Institute of Technology, 10044, Stockholm, Sweden. lichengs@kth.se.|State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 116024, Dalian, China. lichengs@kth.se.
authors: Licheng
authors: L
authors: Sun
mesh_terms: D002384:Catalysis; D004563:Electrochemistry; D004566:Electrodes; D005290:Ferric Compounds / Q000737:chemistry*; D008027:Light; D043942:Nanotubes / Q000737:chemistry*; D010084:Oxidation-Reduction; D055668:Photochemical Processes; D012428:Ruthenium / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D005290:Ferric Compounds; D014867:Water; C000499:ferric oxide; D012428:Ruthenium
keywords: hematite; heterogeneous catalysis; nanorods; ruthenium; water oxidation