Abstract：
:A hematite photoanode showing a stable, record-breaking performance of 4.32 mA/cm² photoelectrochemical water oxidation current at 1.23 V vs. RHE under simulated 1-sun (100 mW/cm²) irradiation is reported. This photocurrent corresponds to ca. 34% of the maximum theoretical limit expected for hematite with a band gap of 2.1 V. The photoanode produced stoichiometric hydrogen and oxygen gases in amounts close to the expected values from the photocurrent. The hematitle has a unique single-crystalline "wormlike" morphology produced by in-situ two-step annealing at 550°C and 800°C of β-FeOOH nanorods grown directly on a transparent conducting oxide glass via an all-solution method. In addition, it is modified by platinum doping to improve the charge transfer characteristics of hematite and an oxygen-evolving co-catalyst on the surface.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Kim JY,Magesh G,Youn DH,Jang JW,Kubota J,Domen K,Lee JSdoi
10.1038/srep02681subject
Has Abstractpub_date
2013-01-01 00:00:00pages
2681issn
2045-2322pii
srep02681journal_volume
3pub_type
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