Influence of CeO2 on Pt-Pd/CeO2-OMC Catalysts for Formic Acid Oxidation

Ateeq ur Rehman; Sk Safdar Hossain; Sleem ur Rahman; Shakeel Ahmed; Mohammad M. Hossain

doi:10.1007/s12678-015-0250-5

Influence of CeO₂ on Pt-Pd/CeO₂-OMC Catalysts for Formic Acid Oxidation

Ateeq ur Rehman
, Sk Safdar Hossain
, Sleem ur Rahman
, Shakeel Ahmed
, Mohammad M. Hossain^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

This article deals with the promotional effects of CeO₂ on PtPd/CeO₂-OMC electrocatalysts. The synthesized catalysts are characterized using different physicochemical techniques and evaluated in a formic acid oxidation fuel cell. N₂ adsorption/desorption analysis shows that CeO₂ modification increases the surface area of OMC from 1005 to 1119 m²/g. SEM, XRD, and TEM analysis reveal that the presence of CeO₂ enhances the active metal(s) dispersion on the CeO₂-OMC surface. The average particle size of the dispersed metal decreases with the increase of Pt/Pd ratio on CeO₂-OMC support. Cyclic voltametry measurement of Pd/CeO₂-OMC gives 12 % higher anodic current activity with 83-mV negative shift of the peak E as compared to unmodified Pd/OMC. In bimetallic catalysts, the addition of Pt improves the activity and stability of the catalysts significantly. Among the bimetallic samples, Pd₃Pt₁/CeO₂-OMC displays superior current density (74.6 mA/cm²), which is 28.3 times higher than that of Pt/CeO₂-OMC. It also shows higher stability (on 32.8 mA/cm²) for an extended period of time (30 min) with least indication of CO poisoning effects.

Original language	English
Pages (from-to)	348-356
Number of pages	9
Journal	Electrocatalysis
Volume	6
Issue number	4
DOIs	https://doi.org/10.1007/s12678-015-0250-5
State	Published - 25 Jul 2015

Bibliographical note

Publisher Copyright:
© 2015, Springer Science+Business Media New York.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

CeO
Electrocatalyst
Formic acid fuel cell
Ordered mesoporous carbon (OMC)

ASJC Scopus subject areas

Electrochemistry

Access to Document

10.1007/s12678-015-0250-5

Cite this

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title = "Influence of CeO2 on Pt-Pd/CeO2-OMC Catalysts for Formic Acid Oxidation",

abstract = "This article deals with the promotional effects of CeO2 on PtPd/CeO2-OMC electrocatalysts. The synthesized catalysts are characterized using different physicochemical techniques and evaluated in a formic acid oxidation fuel cell. N2 adsorption/desorption analysis shows that CeO2 modification increases the surface area of OMC from 1005 to 1119 m2/g. SEM, XRD, and TEM analysis reveal that the presence of CeO2 enhances the active metal(s) dispersion on the CeO2-OMC surface. The average particle size of the dispersed metal decreases with the increase of Pt/Pd ratio on CeO2-OMC support. Cyclic voltametry measurement of Pd/CeO2-OMC gives 12 \% higher anodic current activity with 83-mV negative shift of the peak E as compared to unmodified Pd/OMC. In bimetallic catalysts, the addition of Pt improves the activity and stability of the catalysts significantly. Among the bimetallic samples, Pd3Pt1/CeO2-OMC displays superior current density (74.6 mA/cm2), which is 28.3 times higher than that of Pt/CeO2-OMC. It also shows higher stability (on 32.8 mA/cm2) for an extended period of time (30 min) with least indication of CO poisoning effects.",

keywords = "CeO, Electrocatalyst, Formic acid fuel cell, Ordered mesoporous carbon (OMC)",

author = "\{ur Rehman\}, Ateeq and Hossain, \{Sk Safdar\} and \{ur Rahman\}, Sleem and Shakeel Ahmed and Hossain, \{Mohammad M.\}",

note = "Publisher Copyright: {\textcopyright} 2015, Springer Science+Business Media New York.",

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AU - ur Rehman, Ateeq

AU - Hossain, Sk Safdar

AU - ur Rahman, Sleem

AU - Ahmed, Shakeel

AU - Hossain, Mohammad M.

PY - 2015/7/25

Y1 - 2015/7/25

N2 - This article deals with the promotional effects of CeO2 on PtPd/CeO2-OMC electrocatalysts. The synthesized catalysts are characterized using different physicochemical techniques and evaluated in a formic acid oxidation fuel cell. N2 adsorption/desorption analysis shows that CeO2 modification increases the surface area of OMC from 1005 to 1119 m2/g. SEM, XRD, and TEM analysis reveal that the presence of CeO2 enhances the active metal(s) dispersion on the CeO2-OMC surface. The average particle size of the dispersed metal decreases with the increase of Pt/Pd ratio on CeO2-OMC support. Cyclic voltametry measurement of Pd/CeO2-OMC gives 12 % higher anodic current activity with 83-mV negative shift of the peak E as compared to unmodified Pd/OMC. In bimetallic catalysts, the addition of Pt improves the activity and stability of the catalysts significantly. Among the bimetallic samples, Pd3Pt1/CeO2-OMC displays superior current density (74.6 mA/cm2), which is 28.3 times higher than that of Pt/CeO2-OMC. It also shows higher stability (on 32.8 mA/cm2) for an extended period of time (30 min) with least indication of CO poisoning effects.

AB - This article deals with the promotional effects of CeO2 on PtPd/CeO2-OMC electrocatalysts. The synthesized catalysts are characterized using different physicochemical techniques and evaluated in a formic acid oxidation fuel cell. N2 adsorption/desorption analysis shows that CeO2 modification increases the surface area of OMC from 1005 to 1119 m2/g. SEM, XRD, and TEM analysis reveal that the presence of CeO2 enhances the active metal(s) dispersion on the CeO2-OMC surface. The average particle size of the dispersed metal decreases with the increase of Pt/Pd ratio on CeO2-OMC support. Cyclic voltametry measurement of Pd/CeO2-OMC gives 12 % higher anodic current activity with 83-mV negative shift of the peak E as compared to unmodified Pd/OMC. In bimetallic catalysts, the addition of Pt improves the activity and stability of the catalysts significantly. Among the bimetallic samples, Pd3Pt1/CeO2-OMC displays superior current density (74.6 mA/cm2), which is 28.3 times higher than that of Pt/CeO2-OMC. It also shows higher stability (on 32.8 mA/cm2) for an extended period of time (30 min) with least indication of CO poisoning effects.

KW - CeO

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KW - Formic acid fuel cell

KW - Ordered mesoporous carbon (OMC)

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