Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 119, Issue 30, Pages 17308-17315Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.5b04618
Keywords
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Funding
- National Science Foundation [DMR-1053416]
- Temple University Graduate Student Fellowship
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1053416] Funding Source: National Science Foundation
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The reduction of 4-nitropheriol to 4-aminoptienol by sodium borohydride serves as a well-established model reaction for assessing the catalytic activity Of -metal nanopartides. While many of the studied nanopartides are plasinonic in nature, there is little understanding of whether significant-photocatalytic enhanCernents to the reaction rate are achievable. Here, we assess the catalytic and photocatalytic properties of highly faceted, substrate-immobilized; nanoprism-tike AuCt structures synthesized using a vapor phase templated-assembly teChnique. The so-formed structures have a bimetallic coruposition which is well-recognized for its catalytic capabilities as welt-as a strong localized surface plasmon resonance fii the visible spectrum which gives rise to enhanced near-fields at the tips of the triangle. Using a dip catalyst modality, the structures are demonstrated as heterogeneous photocatalysts with a 32-fold enhancement to the reaction rate constant *hen resonantly illuminated with 10 mW/cm(2) laser light. The study demonstrates the potential of such structure S,as photocatalysts and validates the reduction of 4-nitrophenol as a reaction useful in assessing the photocatalytic capabilities of plasmonic nanostructures.
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