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Citation: RAO Gui-Shi, FAN Feng-Ru, WANG Guo-Fu, WU Zhi-Xiang, YI Fei, ZHONG Qi-Ling, REN Bin, TIAN Zhong-Qun. In-situ SERS of Formic Acid Electro-catalytic Oxidation on Au_core@Pt_shell/Pt Electrode[J]. Acta Physico-Chimica Sinica, ;2008, 24(02): 345-349. doi: 10.3866/PKU.WHXB20080228 shu

In-situ SERS of Formic Acid Electro-catalytic Oxidation on Au_core@Pt_shell/Pt Electrode

1.
College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China; State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China

Received Date: 25 September 2007
Available Online: 24 December 2007

Aucore@Ptshell nanoparticleswere synthesizedby chemical reductionmethod. The sampleswere characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). In-situ surfac-enhanced Raman scattering (in-situ SERS) spectroscopy combined with cyclic voltammetry was utilized to investigate the electro-oxidation behavior of formic acid adsorbed on Aucore@Ptshell nanoparticles coated on platinum electrode, and SERS spectra with high quality were acquired. Results showed that the intermediates COad and HCOOad, the dissociated products of HCOOH, were produced at open circuit potential. As the potential moved to positive, the first oxidation wave for CO2 was observed at +0.10 V. The study demonstrated that the electrode prepared by Aucore@Ptshell nanoparticles coated on platinum substrate exhibited od electro-catalytic properties and SERS activity for the oxidation of HCOOH, and the electro-oxidation proceeds of formic acid via“dual path”mechanism.
- SERS; Formic acid; Electro-catalytic oxidation; Aucore@Ptshell/Pt electrode
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In-situ SERS of Formic Acid Electro-catalytic Oxidation on Aucore@Ptshell/Pt Electrode

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通讯作者: 陈斌, bchen63@163.com

In-situ SERS of Formic Acid Electro-catalytic Oxidation on Au_core@Pt_shell/Pt Electrode