Noble metal and Mn<inf>3</inf>O<inf>4</inf> supported carbon nanotubes: Enhanced catalysts for ethanol electrooxidation

The carbon nanotubes (CNT) were modified by Mn3O4 before deposition of metal catalysts (e.g. Pt and Pd) by improved polyol method. Crystallinity, morphology and composition of the synthesized electrocatalysts were characterized by Fourier transform infrared (FT-IR) spectroscopy, x-ray diffraction (X...

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Main Authors: Suwaphid Themsirimongko, Napapha Promsawan, Surin Saipanya
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/55476
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-554762018-09-05T02:56:39Z Noble metal and Mn<inf>3</inf>O<inf>4</inf> supported carbon nanotubes: Enhanced catalysts for ethanol electrooxidation Suwaphid Themsirimongko Napapha Promsawan Surin Saipanya Chemistry The carbon nanotubes (CNT) were modified by Mn3O4 before deposition of metal catalysts (e.g. Pt and Pd) by improved polyol method. Crystallinity, morphology and composition of the synthesized electrocatalysts were characterized by Fourier transform infrared (FT-IR) spectroscopy, x-ray diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive x-ray spectroscopy (EDS). It was found that the Mn3O4 nanoparticles are dispersed and covered the CNT surface. The various atomic ratios of 10 wt% PtxPdy nanoparticles are also uniformly dispersed on Mn3O4-CNT with the particle size of 1-4 nm. Their electrocatalytic performances in ethanol oxidation were investigated by cyclic voltammetry (CV) and Chronoamperometry (CA). The prepared catalyst showed enhanced catalytic activity and more stability than the commercially available PtRu/Vulcan XC-72 catalyst. It is proposed that additions of metal oxides and noble metal could develop active sites for ethanol oxidation, which their catalytic performances were improved. These results imply that the prepared various atomic ratios PtxPdy/Mn3O4-CNT nanocomposite could be a promising electrocatalyst to enhance performance of direct ethanol fuel cell applications. 2018-09-05T02:56:39Z 2018-09-05T02:56:39Z 2016-01-01 Journal 14523981 2-s2.0-84958166217 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84958166217&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/55476
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Chemistry
spellingShingle Chemistry
Suwaphid Themsirimongko
Napapha Promsawan
Surin Saipanya
Noble metal and Mn<inf>3</inf>O<inf>4</inf> supported carbon nanotubes: Enhanced catalysts for ethanol electrooxidation
description The carbon nanotubes (CNT) were modified by Mn3O4 before deposition of metal catalysts (e.g. Pt and Pd) by improved polyol method. Crystallinity, morphology and composition of the synthesized electrocatalysts were characterized by Fourier transform infrared (FT-IR) spectroscopy, x-ray diffraction (XRD), transmission electron microscopy (TEM) and energy dispersive x-ray spectroscopy (EDS). It was found that the Mn3O4 nanoparticles are dispersed and covered the CNT surface. The various atomic ratios of 10 wt% PtxPdy nanoparticles are also uniformly dispersed on Mn3O4-CNT with the particle size of 1-4 nm. Their electrocatalytic performances in ethanol oxidation were investigated by cyclic voltammetry (CV) and Chronoamperometry (CA). The prepared catalyst showed enhanced catalytic activity and more stability than the commercially available PtRu/Vulcan XC-72 catalyst. It is proposed that additions of metal oxides and noble metal could develop active sites for ethanol oxidation, which their catalytic performances were improved. These results imply that the prepared various atomic ratios PtxPdy/Mn3O4-CNT nanocomposite could be a promising electrocatalyst to enhance performance of direct ethanol fuel cell applications.
format Journal
author Suwaphid Themsirimongko
Napapha Promsawan
Surin Saipanya
author_facet Suwaphid Themsirimongko
Napapha Promsawan
Surin Saipanya
author_sort Suwaphid Themsirimongko
title Noble metal and Mn<inf>3</inf>O<inf>4</inf> supported carbon nanotubes: Enhanced catalysts for ethanol electrooxidation
title_short Noble metal and Mn<inf>3</inf>O<inf>4</inf> supported carbon nanotubes: Enhanced catalysts for ethanol electrooxidation
title_full Noble metal and Mn<inf>3</inf>O<inf>4</inf> supported carbon nanotubes: Enhanced catalysts for ethanol electrooxidation
title_fullStr Noble metal and Mn<inf>3</inf>O<inf>4</inf> supported carbon nanotubes: Enhanced catalysts for ethanol electrooxidation
title_full_unstemmed Noble metal and Mn<inf>3</inf>O<inf>4</inf> supported carbon nanotubes: Enhanced catalysts for ethanol electrooxidation
title_sort noble metal and mn<inf>3</inf>o<inf>4</inf> supported carbon nanotubes: enhanced catalysts for ethanol electrooxidation
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84958166217&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/55476
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