In-situ SERS of formic acid electro-catalytic oxidation on Aucore@Ptshell/Pt electrode

被引：5

作者：

Rao Gui-Shi ^{[1
]}

Fan Feng-Ru ^{[2
,3
]}

Wang Guo-Fu ^{[1
]}

Wu Zhi-Xiang ^{[1
]}

Yi Fei ^{[1
]}

Zhong Qi-Ling ^{[1
]}

Ren Bin ^{[2
,3
]}

Tian Zhong-Qun ^{[2
,3
]}

机构：

[1] Jiangxi Normal Univ, Coll Chem & Chem Engn, Nanchang 330022, Peoples R China

[2] Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem & Solid Surface, Xiamen 361005, Fujian Province, Peoples R China

[3] Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Fujian Province, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2008年 / 24卷 / 02期

关键词：

SERS; formic acid; electro-catalytic oxidation; Au-core@Pt-shell/Pt electrode;

D O I：

10.3866/PKU.WHXB20080228

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Au-core@Pt-shell nanoparticles were synthesized by chemical reduction method. The samples were 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 Au-core@Pt-shell 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 CO, was observed at +0.10 V. The study demonstrated that the electrode prepared by Au-core@Pt-shell nanoparticles coated on platinum substrate exhibited good electro-catalytic properties and SERS activity for the oxidation of HCOOH, and the electro-oxidation proceeds of formic acid via "dual path" mechanism.

引用

页码：345 / 349

页数：5

共 33 条

[1] Beden B., 1992, MODERN ASPECTS ELECT, P97, DOI DOI 10.1007/978-1-4615-3376-4_2
[2] BEDEN B, 1988, SPECTROELECTROCHEMIS, P189, DOI DOI 10.1007/978-1-4613-0985-7_5
[3] BEWICK A, 1987, J ELECTROANAL CHEM, V216, P293
[4] A STUDY OF INTERMEDIATES ADSORBED ON PLATINIZED-PLATINUM DURING STEADY-STATE OXIDATION OF METHANOL FORMIC ACID AND FORMALDEHYDE
BREITER, MW
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1967, 14 (04): : 407 - &
[5] Investigation of surface-enhanced Raman scattering from platinum electrodes using a confocal Raman microscope: dependence of surface roughening pretreatment
Cai, WB
Ren, B
Li, XQ
She, CX
Liu, FM
Cai, XW
Tian, ZQ
[J]. SURFACE SCIENCE, 1998, 406 (1-3) : 9 - 22
[6] Surface-enhanced Raman spectroscopy studies on the adsorption and electrooxidation of carbon monoxide at the platinum-formic acid interface
Cao, PG
Sun, YH
Gu, RN
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (15): : 4716 - 4722
[7] OXIDATION OF FORMIC-ACID AT NOBLE-METAL ELECTRODES .1. REVIEW OF PREVIOUS WORK
CAPON, A
PARSONS, R
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1973, 44 (01): : 1 - 7
[8] Bridge-bonded formate: Active intermediate or spectator species in formic acid oxidation on a Pt film electrode?
Chen, Y. -X.
Heinen, M.
Jusys, Z.
Behm, R. J.
[J]. LANGMUIR, 2006, 22 (25) : 10399 - 10408
[9] Kinetics and mechanism of the electrooxidation of formic acid - Spectroelectrochemical studies in a flow cell
Chen, YX
Heinen, M
Jusys, Z
Behm, RJ
[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (06) : 981 - 985
[10] Formate, an active intermediate for direct oxidation of methanol on Pt electrode
Chen, YX
Miki, A
Ye, S
Sakai, H
Osawa, M
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (13) : 3680 - 3681

← 1 2 3 4 →