Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/22305
Title: Morphology-controlled synthesis of Au/Cu2FeSnS4 core-shell nanostructures for plasmon-enhanced photocatalytic hydrogen generation
Authors: Ha, E
Lee, LYS 
Man, HW
Tsang, SCE
Wong, KY 
Keywords: Anisotropic growth
Au/CITS core-shell
Hydrogen evolution
Photocatalysis
Surface plasmon resonance
Issue Date: 2015
Publisher: American Chemical Society
Source: ACS applied materials and interfaces, 2015, v. 7, no. 17, p. 9072-9077 How to cite?
Journal: ACS applied materials and interfaces 
Abstract: Copper-based chalcogenides of earth-abundant elements have recently arisen as an alternate material for solar energy conversion. Cu2FeSnS4 (CITS), a quaternary chalcogenide that has received relatively little attention, has the potential to be developed into a low-cost and environmentlly friendly material for photovoltaics and photocatalysis. Herein, we report, for the first time, the synthesis, characterization, and growth mechanism of novel Au/CITS core-shell nanostructures with controllable morphology. Precise manipulations in the core-shell dimensions are demonstrated to yield two distinct heterostructures with spherical and multipod gold nanoparticle (NP) cores (Ausp/CITS and Aump/CITS). In photocatalytic hydrogen generation with as-synthesized Au/CITS NPs, the presence of Au cores inside the CITS shell resulted in higher hydrogen generation rates, which can be attributed to the surface plasmon resonance (SPR) effect. The Ausp/CITS and Aump/CITS core-shell NPs enhanced the photocatalytic hydrogen generation by about 125% and 240%, respectively, compared to bare CITS NPs.
URI: http://hdl.handle.net/10397/22305
ISSN: 1944-8244
EISSN: 1944-8252
DOI: 10.1021/acsami.5b00715
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