期刊
NANOTECHNOLOGY
卷 29, 期 3, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aa9731
关键词
Si-H bonds; Si/Cu2O heterojunctions; equilibrium electrode potential; water splitting
资金
- National Basic Research Program of China [2016YFA0200801]
- NSFC [51672284]
- Chinese Academy of Sciences [QYZDJ-SSW-JSC032, XDB17000000]
- Youth Innovation Promotion Association CAS [2014022]
We report a facile and low-cost method to synthesize Si/Cu2O heterojunction nanowire arrays, without SiOx, at the Si/Cu2O interface. The reductive Si-H bonds on the surface of Si nanowires plays a key role in situ by reducing Cu(II) ions to Cu2O nanocubes and avoiding the SiOx interface layer. Different pH values would vary the electrochemical potential of reactions and as a result, different products would be formed. Utilized as a photoanode for water splitting, Si/Cu2O nanowire arrays exhibit good photoelectrochemical performance.
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