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Issue 40, 2015
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Corrosion resistant three-dimensional nanotextured silicon for water photo-oxidation

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Abstract

We demonstrate the ability to chemically transform bulk silicon into a nanotextured surface that exhibits excellent electrochemical stability in aqueous conditions for water photo-oxidation. Conformal defective graphene coatings on nanotextured silicon formed by thermal treatment enable over 50× corrosion resistance in aqueous electrolytes based upon Tafel analysis and impedance spectroscopy. This enables nanotextured silicon as an effective oxygen-evolution photoanode for water splitting with saturation current density measured near 35 mA cm−2 under 100 mW cm−2 (1 sun) illumination. Our approach builds upon simple and scalable processing techniques with silicon to develop corrosion resistant electrodes that can benefit a broad range of catalytic and photocatalytic applications.

Graphical abstract: Corrosion resistant three-dimensional nanotextured silicon for water photo-oxidation

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Publication details

The article was received on 12 Jun 2015, accepted on 08 Sep 2015 and first published on 16 Sep 2015


Article type: Paper
DOI: 10.1039/C5NR03897A
Nanoscale, 2015,7, 16755-16762

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    Corrosion resistant three-dimensional nanotextured silicon for water photo-oxidation

    R. Carter, S. Chatterjee, E. Gordon, K. Share, W. R. Erwin, A. P. Cohn, R. Bardhan and C. L. Pint, Nanoscale, 2015, 7, 16755
    DOI: 10.1039/C5NR03897A

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