title: Fabrication of Au@Pt multibranched nanoparticles and their application to in situ SERS monitoring.
abstract: Here, we present an Au@Pt core-shell multibranched nanoparticle as a new substrate capable of in situ surface-enhanced Raman scattering (SERS), thereby enabling monitoring of the catalytic reaction on the active surface. By careful control of the amount of Pt deposited bimetallic Au@Pt, nanoparticles with moderate performance both for SERS and catalytic activity were obtained. The Pt-catalyzed reduction of 4-nitrothiophenol by borohydride was chosen as the model reaction. The intermediate during the reaction was captured and clearly identified via SERS spectroscopy. We established in situ SERS spectroscopy as a promising and powerful technique to investigate in situ reactions taking place in heterogeneous catalysis.
authors.affiliation: School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, China.
authors.forename: Qianling
authors.initials: Q
authors.lastname: Cui
authors.forename: Guizhi
authors.initials: G
authors.lastname: Shen
authors.forename: Xuehai
authors.initials: X
authors.lastname: Yan
authors.forename: Lidong
authors.initials: L
authors.lastname: Li
authors.forename: Helmuth
authors.initials: H
authors.lastname: Möhwald
authors.forename: Matias
authors.initials: M
authors.lastname: Bargheer
keywords: bimetallic nanoparticles; core−shell nanostructure; gold; heterogeneous catalysis; nanoparticles; surface-enhanced Raman scattering