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Research Papers

Electrochemical Oxidation of Methanol at Pt Modified Electrode in Carbonate Solution

[+] Author and Article Information
M. A. Ibrahim

Chemistry Department,
El-Arish Faculty of Education,
Suez Canal University,
North Sinai 1712, Egypt;
Chemistry Department,
Faculty of Science,
University of Tabuk,
Tabuk 71491, Saudi Arabia
e-mail: m-ibrahim@ut.edu.sa

1Corresponding author.

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF FUEL CELL SCIENCE AND TECHNOLOGY. Manuscript received March 16, 2013; final manuscript received October 20, 2013; published online December 5, 2013. Editor: Nigel M. Sammes.

J. Fuel Cell Sci. Technol 11(2), 021006 (Dec 05, 2013) (7 pages) Paper No: FC-13-1030; doi: 10.1115/1.4025923 History: Received March 16, 2013; Revised October 20, 2013

In this paper, we discuss the effect of Pb, Cd, Ni, Zn, and Mn adatoms on the rate of methanol oxidation at the Pt electrode in the carbonate solution. In Na2B4O7, the presence of Cd, Ni, Mn, and Zn adatoms increased the electrocatalytic current density while the presence of Pb inhibits the methanol oxidation.

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Figures

Grahic Jump Location
Fig. 1

Cyclic voltammogram of the Pt electrode in 0.1 M H2SO4. The scan rate is 50 mV s−1.

Grahic Jump Location
Fig. 3

Cyclic voltammogram of the Pt electrode in 0.5 M CH2OH+0.1 M Na2CO3. The scan rate is 50 mV s−1.

Grahic Jump Location
Fig. 4

Cyclic voltammogram of the Pt electrode in 0.1 M Na2CO3 in the (a) absence of, and in the presence of (b) 10−7 M, (c) 10−6 M, and (d) 10−5 M of metal adatoms. The scan rate is 50 mV s−1.

Grahic Jump Location
Fig. 5

Cyclic voltammogram of the Pt electrode in 0.1 M Na2CO3 in the (a) absence of, and in the presence of (b) 10−7 M, (c) 10−6 M, and (d) 10−5 M of metal adatoms. The scan rate is 50 mV s−1.

Grahic Jump Location
Fig. 6

Cyclic voltammogram of the Pt electrode in 0.1 M Na2CO3 + 0.5 M CH3OH in the (a) absence of, and in the presence of (b) 10−7 M, (c) 10−6 M, and (d) 10−5 M of metal adatoms. The scan rate is 50 mV s−1.

Grahic Jump Location
Fig. 7

Cyclic voltammogram of the Pt electrode in 0.1 M Na2CO3 + 0.5 M CH3OH in the (a) absence of, and in the presence of (b) 10−7 M, (c) 10−6 M, (d) 10−5 M, and (e) 10−4 M of metal adatoms. The scan rate is 50 mV s−1.

Grahic Jump Location
Fig. 8

Influence of the electrolyte solution on the catalytic factor obtained for methanol oxidation at various Pb2+ concentrations

Grahic Jump Location
Fig. 9

Influence of the electrolytic solution on the catalytic factor obtained for methanol oxidation at various Cd2+ concentrations

Grahic Jump Location
Fig. 10

Influence of the electrolytic solution on the catalytic factor obtained for methanol oxidation at various Ni2+ concentrations

Grahic Jump Location
Fig. 11

Influence of the electrolytic solution on the catalytic factor obtained for methanol oxidation at various Mn2+ concentrations

Grahic Jump Location
Fig. 12

Influence of electrolytic solution on the catalytic factor obtained for methanol oxidation at various Zn2+ concentrations

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