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Ultrathin CdSe in Plasmonic Nanogaps for Enhanced Photocatalytic Water Splitting.

ABSTRACT: Enhanced plasmonic fields are a promising way to increase the efficiency of photocatalytic water splitting. The availability of atomically thin materials opens up completely new opportunities. We report photocatalytic water splitting on ultrathin CdSe nanoplatelets placed in plasmonic nanogaps formed by a flat gold surface and a gold nanoparticle. The extreme field intensity created in these gaps increases the electron–hole pair production in the CdSe nanoplatelets and enhances the plasmon-mediated interfacial electron transfer. Compared to individual nanoparticles commonly used to enhance photocatalytic processes, gap-plasmons produce several orders of magnitude higher field enhancement, strongly localized inside the semiconductor sheet thus utilizing the entire photocatalyst efficiently.

SUBMITTER: Sigle DO

PROVIDER: S-EPMC4415030 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature

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Ultrathin CdSe in Plasmonic Nanogaps for Enhanced Photocatalytic Water Splitting.

Sigle Daniel O DO Zhang Liwu L Ithurria Sandrine S Dubertret Benoit B Baumberg Jeremy J JJ

The journal of physical chemistry letters 20150401 7

Enhanced plasmonic fields are a promising way to increase the efficiency of photocatalytic water splitting. The availability of atomically thin materials opens up completely new opportunities. We report photocatalytic water splitting on ultrathin CdSe nanoplatelets placed in plasmonic nanogaps formed by a flat gold surface and a gold nanoparticle. The extreme field intensity created in these gaps increases the electron–hole pair production in the CdSe nanoplatelets and enhances the plasmon-media ...[more]

PMID: 25937870

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