Journal
NANOSCALE
Volume 10, Issue 29, Pages 13936-13941Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nr02262c
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Funding
- Pioneer Research Center Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT Future, Korea [2016M3A7B4910458]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT Future, Korea [2016M3A7B4910458]
- Korean Basic Science Institute (KBSI) research [C38118]
- Korea Evaluation Institute of Industrial Technology (KEIT) from the Ministry of Trade, Industry & Energy, Republic of Korea [10063400]
- NRF - Korean government [2017R1A2B3012003, 2018R1C1B6001267]
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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 photo catalytic 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.
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