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Platinum doped titanium dioxide nanocomposite an efficient platform as anode material for methanol oxidation

TiO2@Pt nanocomposite was synthesized using a simple one-step coprecipitation method as an electrocatalyst for methanol oxidation. Pt nanoparticles were supported by using TiO2 as a support material, thereby providing strong metal-support interactions. The TiO2@Pt nanocomposite characterized by Fiel...

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Main Authors:	Shahid, Mehmood, Zhan, Yiqiang, Sagadeven, Suresh, Akermi, Mehdi, Ahmad, Waqar, Hatamvand, Mohammad, Oh, Won-Chun
Format:	Article
Published:	Elsevier 2021
Subjects:	QC Physics QD Chemistry TP Chemical technology
Online Access:	http://eprints.um.edu.my/35276/
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spelling	my.um.eprints.352762022-10-18T02:58:06Z http://eprints.um.edu.my/35276/ Platinum doped titanium dioxide nanocomposite an efficient platform as anode material for methanol oxidation Shahid, Mehmood Zhan, Yiqiang Sagadeven, Suresh Akermi, Mehdi Ahmad, Waqar Hatamvand, Mohammad Oh, Won-Chun QC Physics QD Chemistry TP Chemical technology TiO2@Pt nanocomposite was synthesized using a simple one-step coprecipitation method as an electrocatalyst for methanol oxidation. Pt nanoparticles were supported by using TiO2 as a support material, thereby providing strong metal-support interactions. The TiO2@Pt nanocomposite characterized by Field Emission Scanning Electron Microscope (FESEM) and Energy Dispersive X-ray analysis (EDX) revealed the spherical shape of TiO2 crystalline matrix with finely dispersed Pt nanoparticles. In the powder X-ray diffraction (XRD) analysis, the diffraction peaks observed for the TiO2 and TiO2@Pt nanocomposites were composed of mixed phases of anatase and rutile. Electrochemical performances are evaluated in an aqueous 0.1 M KOH electrolyte and 0.1 M CH3OH as a target analyte. The Pt@TiO2 nanocomposite showed high electrocatalytic activity towards methanol oxidation, the results indicated that the bare Pt electrode has catalyzed the oxidation of methanol with a strongly weak oxidation peak (J 1/4 0.25 mA/cm(2)), while TiO2 modified Pt electrode which showed higher catalytic activity towards methanol oxidation with a current density of 0.48 mA/cm(2). The methanol oxidation was increased compared to a commercially available Pt/C reference catalyst, as shown by a shifted methanol oxidation peak potential and an increased peak current density. As demonstrated by cyclic voltammetry, these increased activities have been clarified by enhanced methanol oxidation activities. An enhanced methanol oxidation activity is attributed to the metal support interaction due to TiO2 nanoparticles, therefore resulting in a weak CO chemisorption on the surface of Pt. Finally, with such valuable features of electrochemical sensitivity and great catalytic activity, the synthesized TiO2@Pt-3 nanocomposite is used as the anode material for methanol fuel cell application. (c) 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). Elsevier 2021-11 Article PeerReviewed Shahid, Mehmood and Zhan, Yiqiang and Sagadeven, Suresh and Akermi, Mehdi and Ahmad, Waqar and Hatamvand, Mohammad and Oh, Won-Chun (2021) Platinum doped titanium dioxide nanocomposite an efficient platform as anode material for methanol oxidation. Journal of Materials Research and Technology-JMR&T, 15. pp. 6551-6561. ISSN 2238-7854, DOI https://doi.org/10.1016/j.jmrt.2021.11.077 <https://doi.org/10.1016/j.jmrt.2021.11.077>. 10.1016/j.jmrt.2021.11.077
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	QC Physics QD Chemistry TP Chemical technology
spellingShingle	QC Physics QD Chemistry TP Chemical technology Shahid, Mehmood Zhan, Yiqiang Sagadeven, Suresh Akermi, Mehdi Ahmad, Waqar Hatamvand, Mohammad Oh, Won-Chun Platinum doped titanium dioxide nanocomposite an efficient platform as anode material for methanol oxidation
description	TiO2@Pt nanocomposite was synthesized using a simple one-step coprecipitation method as an electrocatalyst for methanol oxidation. Pt nanoparticles were supported by using TiO2 as a support material, thereby providing strong metal-support interactions. The TiO2@Pt nanocomposite characterized by Field Emission Scanning Electron Microscope (FESEM) and Energy Dispersive X-ray analysis (EDX) revealed the spherical shape of TiO2 crystalline matrix with finely dispersed Pt nanoparticles. In the powder X-ray diffraction (XRD) analysis, the diffraction peaks observed for the TiO2 and TiO2@Pt nanocomposites were composed of mixed phases of anatase and rutile. Electrochemical performances are evaluated in an aqueous 0.1 M KOH electrolyte and 0.1 M CH3OH as a target analyte. The Pt@TiO2 nanocomposite showed high electrocatalytic activity towards methanol oxidation, the results indicated that the bare Pt electrode has catalyzed the oxidation of methanol with a strongly weak oxidation peak (J 1/4 0.25 mA/cm(2)), while TiO2 modified Pt electrode which showed higher catalytic activity towards methanol oxidation with a current density of 0.48 mA/cm(2). The methanol oxidation was increased compared to a commercially available Pt/C reference catalyst, as shown by a shifted methanol oxidation peak potential and an increased peak current density. As demonstrated by cyclic voltammetry, these increased activities have been clarified by enhanced methanol oxidation activities. An enhanced methanol oxidation activity is attributed to the metal support interaction due to TiO2 nanoparticles, therefore resulting in a weak CO chemisorption on the surface of Pt. Finally, with such valuable features of electrochemical sensitivity and great catalytic activity, the synthesized TiO2@Pt-3 nanocomposite is used as the anode material for methanol fuel cell application. (c) 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
format	Article
author	Shahid, Mehmood Zhan, Yiqiang Sagadeven, Suresh Akermi, Mehdi Ahmad, Waqar Hatamvand, Mohammad Oh, Won-Chun
author_facet	Shahid, Mehmood Zhan, Yiqiang Sagadeven, Suresh Akermi, Mehdi Ahmad, Waqar Hatamvand, Mohammad Oh, Won-Chun
author_sort	Shahid, Mehmood
title	Platinum doped titanium dioxide nanocomposite an efficient platform as anode material for methanol oxidation
title_short	Platinum doped titanium dioxide nanocomposite an efficient platform as anode material for methanol oxidation
title_full	Platinum doped titanium dioxide nanocomposite an efficient platform as anode material for methanol oxidation
title_fullStr	Platinum doped titanium dioxide nanocomposite an efficient platform as anode material for methanol oxidation
title_full_unstemmed	Platinum doped titanium dioxide nanocomposite an efficient platform as anode material for methanol oxidation
title_sort	platinum doped titanium dioxide nanocomposite an efficient platform as anode material for methanol oxidation
publisher	Elsevier
publishDate	2021
url	http://eprints.um.edu.my/35276/
_version_	1748181069805387776
score	13.211869

Platinum doped titanium dioxide nanocomposite an efficient platform as anode material for methanol oxidation

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