title: The oxidant and laser power-dependent plasmon-driven surface photocatalysis reaction of p-aminothiophenol dimerizing into p,p'-dimercaptoazobenzene on Au nanoparticles.
abstract: Recently, plasmon-driven surface photocatalysis (PDSPC) reactions have attracted more and more attention by means of surface-enhanced Raman scattering (SERS) because we can in situ monitor the reaction process and determine the final products and their quantities by the real-time SERS spectrum. In this work, self-assembly AuNPs with both high catalytic activity and strong SERS effect were used as a bifunctional platform for in situ monitoring of PDSPC reactions. p-Aminothiophenol (PATP), a famous model molecule, was selected as a probe molecule and FeCl3 and NaClO were selected as oxidants. In this way, oxidation reaction of PATP dimerizing into p,p'-dimercaptoazobenzene (DMAB) has been investigated by SERS, and the results show that oxidant and laser power can alter the conversion rate of the reaction. This work provides a novel approach for controlling PDSPC reaction rate, which may be useful for understanding the mechanism of PDSPC reactions.
authors.affiliation: Department of Mathematics and Physics, Beijing Institute of Technology Petrochemical, Beijing 102617, PR China. Electronic address: tanenzhong@bipt.edu.cn.
authors.forename: Enzhong
authors.initials: E
authors.lastname: Tan
authors.affiliation: Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry and Environment, Beihang University, Beijing 100191, PR China.
authors.forename: Penggang
authors.initials: P
authors.lastname: Yin
authors.affiliation: Department of Mathematics and Physics, Beijing Institute of Technology Petrochemical, Beijing 102617, PR China.
authors.forename: Chunna
authors.initials: C
authors.lastname: Yu
authors.affiliation: Department of Mathematics and Physics, Beijing Institute of Technology Petrochemical, Beijing 102617, PR China.
authors.forename: Ge
authors.initials: G
authors.lastname: Yu
authors.affiliation: Department of Mathematics and Physics, Beijing Institute of Technology Petrochemical, Beijing 102617, PR China.
authors.forename: Chang
authors.initials: C
authors.lastname: Zhao
keywords: Oxidant; Plasmon-driven surface photocatalysis (PDSPC) reactions; Surface-enhanced Raman scattering (SERS); p,p′-Dimercaptoazobenzene (DMAB); p-Aminothiophenol (PATP)