Silicon nanowire photocathodes for photoelectrochemical hydrogen production
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2016
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Chandrasekaran, S.
Nann, T.
Voelcker, N.H.
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Nanomaterials, 2016; 6(8, article no. 144):1-7
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The performance of silicon for water oxidation and hydrogen production can be improved by exploiting the antireflective properties of nanostructured silicon substrates. In this work, silicon nanowires were fabricated by metal-assisted electroless etching of silicon. An enhanced photocurrent density of ‒17 mA/cm2 was observed for the silicon nanowires coated with an iron sulphur carbonyl catalyst when compared to bare silicon nanowires (‒5 mA/cm2). A substantial amount of 315 μmol/h hydrogen gas was produced at low bias potentials for the silicon nanowires coated with an iron sulphur carbonyl catalyst.
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Copyright 2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/)