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Issue 29, 2018
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Hierarchical carbon–silicon nanowire heterostructures for the hydrogen evolution reaction

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Abstract

Silicon nanowires (SiNWs) opened up exciting possibilities in a variety of research fields due to their unique anisotropic morphologies, facile tuning capabilities, and accessible fabrication methods. The SiNW-based photoelectrochemical (PEC) conversion has recently been known to provide an efficiency superior to that of various photo-responsive semiconductor heterostructures. However, a challenge still remains in designing optimum structures to minimize photo-oxidation and photo-corrosion of the Si surface in a liquid electrolyte. Here, we report a simple method to synthesize hierarchically branched carbon nanowires (CNWs) on SiNWs utilizing copper vapor as the catalyst in a chemical vapor deposition (CVD) process, which exhibits outstanding photocatalytic activities for hydrogen generation along with excellent chemical stability against oxidation and corrosion. Thus, we believe that the CNW-SiNW photoelectrodes would provide a new route to developing high-performing cost-effective catalysts essential for advanced energy conversion and storage technologies.

Graphical abstract: Hierarchical carbon–silicon nanowire heterostructures for the hydrogen evolution reaction

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Publication details

The article was received on 19 Mar 2018, accepted on 23 Jun 2018 and first published on 25 Jun 2018


Article type: Communication
DOI: 10.1039/C8NR02262C
Citation: Nanoscale, 2018,10, 13936-13941
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    Hierarchical carbon–silicon nanowire heterostructures for the hydrogen evolution reaction

    J. Moon, U. Sim, D. J. Kim, H. Ahn, J. An, H. Ha, K. S. Choi, C. Jeon, J. Lee, K. T. Nam and B. H. Hong, Nanoscale, 2018, 10, 13936
    DOI: 10.1039/C8NR02262C

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