Inverse Stellation of CuAu-ZnO Multimetallic-Semiconductor Nanostartube for Plasmon-Enhanced Photocatalysis.

Autor: Tan CF; Department of Electrical and Computer Engineering , National University of Singapore , 4 Engineering Drive 3 , Singapore 117583.; NUS Graduate School for Integrative Sciences and Engineering , National University of Singapore, Centre for Life Sciences , #05-01, 28 Medical Drive , Singapore 117456., Su Su Zin AK; Department of Electrical and Computer Engineering , National University of Singapore , 4 Engineering Drive 3 , Singapore 117583., Chen Z; Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543., Liow CH; Department of Electrical and Computer Engineering , National University of Singapore , 4 Engineering Drive 3 , Singapore 117583., Phan HT; Engineering Science Programme , National University of Singapore , 9 Engineering Drive 1 , Singapore 117575., Tan HR; Institute of Materials Research and Engineering , A*STAR (Agency for Science, Technology and Research) , 3 Research Link , Singapore 117602., Xu QH; Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543., Ho GW; Department of Electrical and Computer Engineering , National University of Singapore , 4 Engineering Drive 3 , Singapore 117583.; Engineering Science Programme , National University of Singapore , 9 Engineering Drive 1 , Singapore 117575.; Institute of Materials Research and Engineering , A*STAR (Agency for Science, Technology and Research) , 3 Research Link , Singapore 117602.
Jazyk: angličtina
Zdroj: ACS nano [ACS Nano] 2018 May 22; Vol. 12 (5), pp. 4512-4520. Date of Electronic Publication: 2018 Apr 30.
DOI: 10.1021/acsnano.8b00770
Abstrakt: One-dimensional (1D) metallic nanocrystals constitute an important class of plasmonic materials for localization of light into subwavelength dimensions. Coupled with their intrinsic conductive properties and extended optical paths for light absorption, metallic nanowires are prevalent in light-harnessing applications. However, the transverse surface plasmon resonance (SPR) mode of traditional multiply twinned nanowires often suffers from weaker electric field enhancement due to its low degree of morphological curvature in comparison to other complex anisotropic nanocrystals. Herein, simultaneous anisotropic stellation and excavation of multiply twinned nanowires are demonstrated through a site-selective galvanic reaction for a pronounced manipulation of light-matter interaction. The introduction of longitudinal extrusions and cavitation along the nanowires leads to a significant enhancement in plasmon field with reduced quenching of localized surface plasmon resonance (LSPR). The as-synthesized multimetallic nanostartubes serve as a panchromatic plasmonic framework for incorporation of photocatalytic materials for plasmon-assisted solar fuel production.
Databáze: MEDLINE
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