Investigation of formic acid oxidation on Ti/IrO2 electrodes using isotope labeling and online mass spectrometry

被引：22

作者：

Fierro, Stephane ^{[1
]}

Nagel, Tina ^{[2
]}

Baltruschat, Helmut ^{[2
]}

Comninellis, Christos ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn, CH-1015 Lausanne, Switzerland

[2] Univ Bonn, Inst Phys & Theoret Chem, D-5300 Bonn, Germany

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2008年 / 11卷 / 07期

关键词：

D O I：

10.1149/1.2912008

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In a first series of experiments the IrO(2) coating was labeled with (18)O (formation of Ir(16)O(18)O) by treatment in H(2)(18)O. Then, in a second series of experiments, this labeled electrode was used for the electrochemical oxidation of formic acid. The presence of C(18)O(16)O (m/z=46) during the anodic polarization clearly proves that the IrO(2) participated in the oxidation of the formic acid. Analysis of the experimental data showed that at maximum 3.7% of the surface IrO(2) participated in the exchange of oxygen between electrogenerated labeled IrO(3) (Ir(16)O(16)O(18)O) and adsorbed formic acid (HC(16)O(16)OH), producing carbon dioxide (C(16)O(18)O) and Ir(16)O(2). (C) 2008 The Electrochemical Society.

引用

页码：E20 / E23

页数：4

共 15 条

[1] Differential electrochemical mass spectrometry [J].

Baltruschat, H .

JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY, 2004, 15 (12) :1693-1706

[2] HETEROGENEOUS REDOX CATALYSIS WITH TITANIUM CHROMIUM(III) OXIDE + TIO2 COMPOSITE ANODES [J].

BECK, F ;

SCHULZ, H .

ELECTROCHIMICA ACTA, 1984, 29 (11) :1569-1579

[3]

COMNINELLIS C, 1995, J APPL ELECTROCHEM, V25, P23

[4] ELECTROCATALYSIS IN THE ELECTROCHEMICAL CONVERSION/COMBUSTION OF ORGANIC POLLUTANTS FOR WASTE-WATER TREATMENT [J].

COMNINELLIS, C .

ELECTROCHIMICA ACTA, 1994, 39 (11-12) :1857-1862

[5]

COMNINELLIS C, 2009, ELECTROCHIM ACTA, V42, P1997

[6]

Comninellis Ch., 1997, CURR TOP ELECTROCHEM, V5, P71

[7] Oxygen evolution in acid solution on IrO2+TiO2 ceramic films. A study by impedance, voltammetry and SEM [J].

daSilva, LA ;

Alves, VA ;

daSilva, MAP ;

Trasatti, S ;

Boodts, JFC .

ELECTROCHIMICA ACTA, 1997, 42 (02) :271-281

[8] Composite materials for electrocatalysis of O2 evolution:: IrO2+SnO2 in acid solution [J].

De Pauli, CP ;

Trasatti, S .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2002, 538 :145-151

[9] Investigation of the oxygen evolution reaction on Ti/IrO2 electrodes using isotope labelling and on-line mass spectrometryle [J].

Fierro, Stefane ;

Nagel, Tina ;

Baltruschat, Helmut ;

Comninellis, Christos .

ELECTROCHEMISTRY COMMUNICATIONS, 2007, 9 (08) :1969-1974

[10] Oxidation of organics by intermediates of water discharge on IrO2 and synthetic diamond anodes [J].

Fóti, G ;

Gandini, D ;

Comninellis, C ;

Perret, A ;

Haenni, W .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 1999, 2 (05) :228-230

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