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Issue 18, 2016
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Photo-assisted electrodeposition of MoSx from ionic liquids on organic-functionalized silicon photoelectrodes for H2 generation

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Abstract

This work reports on the synergistic utility of ionic liquid-based, photo-assisted electrodeposition of MoSx onto organic-functionalized silicon photolelectrodes for dihydrogen (H2) evolution under 1-sun illumination. The surface linker 3,5-dimethoxyphenyl covalently attached to Si(111) enhances conductivity at the substrate|electrolyte interface (impedance spectroscopy) and provides improved physico-chemical support for MoSx deposition (SEM, Raman, PEC-deposition, XPS), to generate a functional composite device that results in 0.33% efficiency for solar → H2 conversion. We report a new method of ionic liquid-based MoSx deposition that avoids complications in analogous aqueous procedures and facilitates the deposition of a uniform catalytic film. This work provides a generalized framework for the optimization of non-platinum catalysts for solar → H2 conversion.

Graphical abstract: Photo-assisted electrodeposition of MoSx from ionic liquids on organic-functionalized silicon photoelectrodes for H2 generation

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Publication details

The article was received on 28 Nov 2015, accepted on 03 Mar 2016 and first published on 25 Mar 2016


Article type: Paper
DOI: 10.1039/C5TA09684G
Author version available: Download Author version (PDF)
Citation: J. Mater. Chem. A, 2016,4, 7027-7035
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    Photo-assisted electrodeposition of MoSx from ionic liquids on organic-functionalized silicon photoelectrodes for H2 generation

    D. W. Redman, H. J. Kim, K. J. Stevenson and M. J. Rose, J. Mater. Chem. A, 2016, 4, 7027
    DOI: 10.1039/C5TA09684G

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