WO3 modification effects on Pt-Pd/WO3-OMC electrocatalysts for formic acid oxidation

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

doi:10.1016/j.apcata.2014.06.008

WO₃ modification effects on Pt-Pd/WO₃-OMC electrocatalysts 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

24 Scopus citations

Abstract

This manuscript presents an experimental investigation of the promotional effects of WO₃ on Pt/Pd/WO₃-OMC electrocatalysts for oxidation of formic acid. Cyclic voltametry of Pd/WO ₃-OMC exhibits 15% higher anodic current activity than that of Pd/OMC. The peak potential is also shifted more than 151 mV in the negative direction. In the bimetallic catalyst samples, the addition of a small amount of Pt improves the performance of PdPt/WO₃-OMC significantly. The atomic Pd/Pt ratio of 2, displays the best current density (56.8 mA/cm²), which is 1.2, 1.65 and 5.2 times higher than that of Pd/WO₃-OMC, Pd₁Pt ₁/WO₃-OMC and Pd₁Pt₂/WO ₃-OMC, respectively. It also shows activity over an extended duration without any indication of CO poisoning effects. N₂ adsorption/desorption analysis shows that WO₃ modification enhances the surface characteristics of OMC with the pore size being slightly decreased from 3.84 nm to3.28 nm. Scanning electron microscopy, x-ray diffraction, transmission electron microscopy analyses reveal that the presence of WO ₃ enhances the uniform dispersion of active metal(s) on the support surface which is primarily believed to be responsible for superior activity/stability of the Pd₂Pt₁/WO₃-OMC.

Original language	English
Pages (from-to)	309-317
Number of pages	9
Journal	Applied Catalysis A: General
Volume	482
DOIs	https://doi.org/10.1016/j.apcata.2014.06.008
State	Published - 22 Jul 2014

Bibliographical note

Funding Information:
The authors would like to acknowledge the support provided by King Abdulaziz City for Science and Technology (KACST) through the Science & Technology Unit at King Fahd University of Petroleum & Minerals (KFUPM) for funding pat of this work through project No. 11-ENV1655-04 as part of the National Science, Technology and Innovation Plan. The authors would also like to thank the Centre of Research Excellence and Renewable Energy (CoRE-RE), research institute, KFUPM for the technical supports to carry out this research. The assistance from Mr. M Latif Hashmi and Mr. Sadaqat support for XRD/SEM is highly appreciated.

Keywords

Formic acid fuel cell
Ordered mesoporous carbon (OMC)
Pd-Pt electrocatalyst

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

UN SDGs

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

Access to Document

10.1016/j.apcata.2014.06.008

Cite this

@article{a15b4c5a2e344aaf9f6e74131c1efab9,

title = "WO3 modification effects on Pt-Pd/WO3-OMC electrocatalysts for formic acid oxidation",

abstract = "This manuscript presents an experimental investigation of the promotional effects of WO3 on Pt/Pd/WO3-OMC electrocatalysts for oxidation of formic acid. Cyclic voltametry of Pd/WO 3-OMC exhibits 15\% higher anodic current activity than that of Pd/OMC. The peak potential is also shifted more than 151 mV in the negative direction. In the bimetallic catalyst samples, the addition of a small amount of Pt improves the performance of PdPt/WO3-OMC significantly. The atomic Pd/Pt ratio of 2, displays the best current density (56.8 mA/cm2), which is 1.2, 1.65 and 5.2 times higher than that of Pd/WO3-OMC, Pd1Pt 1/WO3-OMC and Pd1Pt2/WO 3-OMC, respectively. It also shows activity over an extended duration without any indication of CO poisoning effects. N2 adsorption/desorption analysis shows that WO3 modification enhances the surface characteristics of OMC with the pore size being slightly decreased from 3.84 nm to3.28 nm. Scanning electron microscopy, x-ray diffraction, transmission electron microscopy analyses reveal that the presence of WO 3 enhances the uniform dispersion of active metal(s) on the support surface which is primarily believed to be responsible for superior activity/stability of the Pd2Pt1/WO3-OMC.",

keywords = "Formic acid fuel cell, Ordered mesoporous carbon (OMC), Pd-Pt electrocatalyst",

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

note = "Funding Information: The authors would like to acknowledge the support provided by King Abdulaziz City for Science and Technology (KACST) through the Science \& Technology Unit at King Fahd University of Petroleum \& Minerals (KFUPM) for funding pat of this work through project No. 11-ENV1655-04 as part of the National Science, Technology and Innovation Plan. The authors would also like to thank the Centre of Research Excellence and Renewable Energy (CoRE-RE), research institute, KFUPM for the technical supports to carry out this research. The assistance from Mr. M Latif Hashmi and Mr. Sadaqat support for XRD/SEM is highly appreciated. ",

year = "2014",

month = jul,

day = "22",

doi = "10.1016/j.apcata.2014.06.008",

language = "English",

volume = "482",

pages = "309--317",

journal = "Applied Catalysis A: General",

issn = "0926-860X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - WO3 modification effects on Pt-Pd/WO3-OMC electrocatalysts for formic acid oxidation

AU - Rehman, Ateeq Ur

AU - Hossain, Sk Safdar

AU - Rahman, Sleem Ur

AU - Ahmed, Shakeel

AU - Hossain, Mohammad M.

N1 - Funding Information: The authors would like to acknowledge the support provided by King Abdulaziz City for Science and Technology (KACST) through the Science & Technology Unit at King Fahd University of Petroleum & Minerals (KFUPM) for funding pat of this work through project No. 11-ENV1655-04 as part of the National Science, Technology and Innovation Plan. The authors would also like to thank the Centre of Research Excellence and Renewable Energy (CoRE-RE), research institute, KFUPM for the technical supports to carry out this research. The assistance from Mr. M Latif Hashmi and Mr. Sadaqat support for XRD/SEM is highly appreciated.

PY - 2014/7/22

Y1 - 2014/7/22

N2 - This manuscript presents an experimental investigation of the promotional effects of WO3 on Pt/Pd/WO3-OMC electrocatalysts for oxidation of formic acid. Cyclic voltametry of Pd/WO 3-OMC exhibits 15% higher anodic current activity than that of Pd/OMC. The peak potential is also shifted more than 151 mV in the negative direction. In the bimetallic catalyst samples, the addition of a small amount of Pt improves the performance of PdPt/WO3-OMC significantly. The atomic Pd/Pt ratio of 2, displays the best current density (56.8 mA/cm2), which is 1.2, 1.65 and 5.2 times higher than that of Pd/WO3-OMC, Pd1Pt 1/WO3-OMC and Pd1Pt2/WO 3-OMC, respectively. It also shows activity over an extended duration without any indication of CO poisoning effects. N2 adsorption/desorption analysis shows that WO3 modification enhances the surface characteristics of OMC with the pore size being slightly decreased from 3.84 nm to3.28 nm. Scanning electron microscopy, x-ray diffraction, transmission electron microscopy analyses reveal that the presence of WO 3 enhances the uniform dispersion of active metal(s) on the support surface which is primarily believed to be responsible for superior activity/stability of the Pd2Pt1/WO3-OMC.

AB - This manuscript presents an experimental investigation of the promotional effects of WO3 on Pt/Pd/WO3-OMC electrocatalysts for oxidation of formic acid. Cyclic voltametry of Pd/WO 3-OMC exhibits 15% higher anodic current activity than that of Pd/OMC. The peak potential is also shifted more than 151 mV in the negative direction. In the bimetallic catalyst samples, the addition of a small amount of Pt improves the performance of PdPt/WO3-OMC significantly. The atomic Pd/Pt ratio of 2, displays the best current density (56.8 mA/cm2), which is 1.2, 1.65 and 5.2 times higher than that of Pd/WO3-OMC, Pd1Pt 1/WO3-OMC and Pd1Pt2/WO 3-OMC, respectively. It also shows activity over an extended duration without any indication of CO poisoning effects. N2 adsorption/desorption analysis shows that WO3 modification enhances the surface characteristics of OMC with the pore size being slightly decreased from 3.84 nm to3.28 nm. Scanning electron microscopy, x-ray diffraction, transmission electron microscopy analyses reveal that the presence of WO 3 enhances the uniform dispersion of active metal(s) on the support surface which is primarily believed to be responsible for superior activity/stability of the Pd2Pt1/WO3-OMC.

KW - Formic acid fuel cell

KW - Ordered mesoporous carbon (OMC)

KW - Pd-Pt electrocatalyst

UR - https://www.scopus.com/pages/publications/84903515120

U2 - 10.1016/j.apcata.2014.06.008

DO - 10.1016/j.apcata.2014.06.008

M3 - Article

AN - SCOPUS:84903515120

SN - 0926-860X

VL - 482

SP - 309

EP - 317

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

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