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 Mn 3 O 4 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 diffractio...

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Main Authors: Themsirimongko S., Promsawan N., Saipanya S.
Format: Journal
Published: 2017
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84958166217&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/42336
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-423362017-09-28T04:26:30Z Noble metal and Mn<inf>3</inf>O<inf>4</inf> supported carbon nanotubes: Enhanced catalysts for ethanol electrooxidation Themsirimongko S. Promsawan N. Saipanya S. The carbon nanotubes (CNT) were modified by Mn 3 O 4 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 Mn 3 O 4 nanoparticles are dispersed and covered the CNT surface. The various atomic ratios of 10 wt% Pt x Pd y nanoparticles are also uniformly dispersed on Mn 3 O 4 -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 Pt x Pd y /Mn 3 O 4 -CNT nanocomposite could be a promising electrocatalyst to enhance performance of direct ethanol fuel cell applications. 2017-09-28T04:26:30Z 2017-09-28T04:26:30Z 2016-01-01 Journal 2-s2.0-84958166217 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84958166217&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/42336
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description The carbon nanotubes (CNT) were modified by Mn 3 O 4 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 Mn 3 O 4 nanoparticles are dispersed and covered the CNT surface. The various atomic ratios of 10 wt% Pt x Pd y nanoparticles are also uniformly dispersed on Mn 3 O 4 -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 Pt x Pd y /Mn 3 O 4 -CNT nanocomposite could be a promising electrocatalyst to enhance performance of direct ethanol fuel cell applications.
format Journal
author Themsirimongko S.
Promsawan N.
Saipanya S.
spellingShingle Themsirimongko S.
Promsawan N.
Saipanya S.
Noble metal and Mn<inf>3</inf>O<inf>4</inf> supported carbon nanotubes: Enhanced catalysts for ethanol electrooxidation
author_facet Themsirimongko S.
Promsawan N.
Saipanya S.
author_sort Themsirimongko S.
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 2017
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84958166217&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/42336
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