Nanoplasmon–Semiconductor Hybrid for Interface Catalysis

Abstract

We firstly, in this review, introduce the optical properties of plasmonic metals, and then focus on introducing the unique optical properties of the noble metal–metal-oxide hybrid system by revealing the physical mechanism of plasmon–exciton interaction, which was confirmed by theoretical calculations and experimental investigations. With this noble metal–metal-oxide hybrid system, plasmonic nanostructure–semiconductor exciton coupling interactions for interface catalysis has been analyzed in detail. This review can provide a deeper understanding of the physical mechanism of exciton–plasmon interactions in surface catalysis reactions.

Monitoring the Lifetime of Photoexcited Electrons in a Fresh and Bulk Reduced Rutile TiO2 Single Crystal. Possible Anisotropic Propagation

“…Time resolved spectroscopy, at the femto- and picosecond scales, has been used for a few decades now to study excited charge carriers and charge transfer of materials . It was initially developed to study molecules and then extended to colloidal systems (nanoparticles) and polycrystalline materials. Information can be obtained related to interfacial charge transfer between semiconductors and between semiconductors and metals .…”

Photocatalytic Reversible Reactions Driven by Localized Surface Plasmon Resonance

“…In the future, plasmon-exciton interaction can promote efficiency and probability for plasmon-driven chemical reactions. Detailed information can be obtained from References [8,14,18,19,[53][54][55].…”

“…In addition, the hydration layer was the root cause of the difference in photoreaction rate constants of the reactants and product. Studies showed that, in order for the reaction to better proceed, the nitro 4NBT group should be reduced, and protonation is needed to produce reaction intermediates [50][51][52][53][54]. In addition, the protons that came from the hydration layer on the Au surface were needed to limit the photoreaction rate [35][36][37][38][39].…”

Au Tip-Enhanced Raman Spectroscopy for Catalysis

“…Based on local surface plasmon resonance (LSPR), surface-enhanced Raman scattering (SERS) has been investigated intensively and widely applied since 1974 [1][2][3][4]. The electric field enhancement of Raman signals can reach 10 8 -10 11 [5][6][7], while chemical enhancement can only reach 10 2 -10 3 [8][9][10].…”