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Surface plasmon-enhanced photochemical reactions on noble metal nanostructures

Content Provider	Springer Nature Link
Author	Wu, De Yin Zhang, Meng Zhao, Liu Bin Huang, Yi Fan Ren, Bin Tian, Zhong Qun
Copyright Year	2015
Abstract	Nanoscale noble metals can exhibit excellent photochemical and photophysical properties, due to surface plasmon resonance (SPR) from specifically collective electronic excitations on these metal surfaces. The SPR effect triggers many new surface processes, including radiation and radiationless relaxations. As for the radiation process, the SPR effect causes the significant focus of light and enormous enhancement of the local surface optical electric field, as observed in surface-enhanced Raman spectroscopy (SERS) with very high detection sensitivity (to the single-molecule level). SERS is used to identify surface species and characterize molecular structures and chemical reactions. For the radiationless process, the SPR effect can generate hot carriers, such as hot electrons and hot holes, which can induce and enhance surface chemical reactions. Here, we review our recent work and related literature on surface catalytic-coupling reactions of aromatic amines and aromatic nitro compounds on nanostructured noble metal surfaces. Such reactions are a type of novel surface plasmon-enhanced chemical reaction. They could be simultaneously characterized by SERS when the SERS signals are assigned. By combining the density functional theory (DFT) calculations and SERS experimental spectra, our results indicate the possible pathways of the surface plasmon-enhanced photochemical reactions on nanostructures of noble metals. To construct a stable and sustainable system in the conversion process of the light energy to the chemical energy on nanoscale metal surfaces, it is necessary to simultaneously consider the hot electrons and the hot holes as a whole chemical reaction system.
Starting Page	574
Ending Page	585
Page Count	12
File Format	PDF
ISSN	16747291
Journal	Science in China Series B: Chemistry
Volume Number	58
Issue Number	4
e-ISSN	18691870
Language	English
Publisher	Science China Press
Publisher Date	2015-03-06
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	surface plasmon resonance plasmon-enhanced chemical reaction p-aminothiophenol density functional theory noble metal nanostructures Chemistry/Food Science
Content Type	Text
Resource Type	Article
Subject	Chemistry

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