Activity and stability improvement of platinum loaded on reduced graphene oxide and carbon nanotube composites for methanol oxidation

© 2019, Springer Nature B.V. Abstract: A series of platinum nanoparticle-loaded carbon composites composed of reduced graphene oxide and multi-walled carbon nanotubes (rGO-CNT/Pt) was chemically synthesized at room temperature. The prepared catalysts were characterized using X-ray diffraction (XRD),...

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Main Authors: Natthapong Pongpichayakul, Paralee Waenkeaw, Jaroon Jakmunee, Suwaphid Themsirimongkon, Surin Saipanya
Format: Journal
Published: 2020
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/68296
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-682962020-04-02T15:27:25Z Activity and stability improvement of platinum loaded on reduced graphene oxide and carbon nanotube composites for methanol oxidation Natthapong Pongpichayakul Paralee Waenkeaw Jaroon Jakmunee Suwaphid Themsirimongkon Surin Saipanya Chemical Engineering Chemistry Materials Science © 2019, Springer Nature B.V. Abstract: A series of platinum nanoparticle-loaded carbon composites composed of reduced graphene oxide and multi-walled carbon nanotubes (rGO-CNT/Pt) was chemically synthesized at room temperature. The prepared catalysts were characterized using X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The results confirm that rGO mixed CNT composites were successfully prepared with small and highly dispersed Pt nanoparticles on the composite supports. The cyclic voltammetry (CV) and chronoamperometry (CA) electrochemical measurements indicated that the composite carbon catalyst increased the intensity and stability for the methanol oxidation reaction (MOR). In addition, fewer carbon intermediate species were observed in the CO stripping experiment. The incorporation of CNTs into rGO decreases the agglomeration between rGO sheets and increases the active surface of dispersed Pt nanoparticles, resulting in the enhanced oxidation activity of the as-prepared electrocatalysts. The combined characteristics of the highly active Pt nanoparticles and potent electron transfer of the rGO-CNTs enable excellent methanol oxidation with high stability. Consequently, this hybrid carbon material is a good candidate for MOR catalysis, which can be applied to direct methanol fuel cells. Graphic abstract: [Figure not available: see fulltext.]. 2020-04-02T15:24:28Z 2020-04-02T15:24:28Z 2020-01-01 Journal 15728838 0021891X 2-s2.0-85076117772 10.1007/s10800-019-01368-1 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85076117772&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/68296
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Chemical Engineering
Chemistry
Materials Science
spellingShingle Chemical Engineering
Chemistry
Materials Science
Natthapong Pongpichayakul
Paralee Waenkeaw
Jaroon Jakmunee
Suwaphid Themsirimongkon
Surin Saipanya
Activity and stability improvement of platinum loaded on reduced graphene oxide and carbon nanotube composites for methanol oxidation
description © 2019, Springer Nature B.V. Abstract: A series of platinum nanoparticle-loaded carbon composites composed of reduced graphene oxide and multi-walled carbon nanotubes (rGO-CNT/Pt) was chemically synthesized at room temperature. The prepared catalysts were characterized using X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The results confirm that rGO mixed CNT composites were successfully prepared with small and highly dispersed Pt nanoparticles on the composite supports. The cyclic voltammetry (CV) and chronoamperometry (CA) electrochemical measurements indicated that the composite carbon catalyst increased the intensity and stability for the methanol oxidation reaction (MOR). In addition, fewer carbon intermediate species were observed in the CO stripping experiment. The incorporation of CNTs into rGO decreases the agglomeration between rGO sheets and increases the active surface of dispersed Pt nanoparticles, resulting in the enhanced oxidation activity of the as-prepared electrocatalysts. The combined characteristics of the highly active Pt nanoparticles and potent electron transfer of the rGO-CNTs enable excellent methanol oxidation with high stability. Consequently, this hybrid carbon material is a good candidate for MOR catalysis, which can be applied to direct methanol fuel cells. Graphic abstract: [Figure not available: see fulltext.].
format Journal
author Natthapong Pongpichayakul
Paralee Waenkeaw
Jaroon Jakmunee
Suwaphid Themsirimongkon
Surin Saipanya
author_facet Natthapong Pongpichayakul
Paralee Waenkeaw
Jaroon Jakmunee
Suwaphid Themsirimongkon
Surin Saipanya
author_sort Natthapong Pongpichayakul
title Activity and stability improvement of platinum loaded on reduced graphene oxide and carbon nanotube composites for methanol oxidation
title_short Activity and stability improvement of platinum loaded on reduced graphene oxide and carbon nanotube composites for methanol oxidation
title_full Activity and stability improvement of platinum loaded on reduced graphene oxide and carbon nanotube composites for methanol oxidation
title_fullStr Activity and stability improvement of platinum loaded on reduced graphene oxide and carbon nanotube composites for methanol oxidation
title_full_unstemmed Activity and stability improvement of platinum loaded on reduced graphene oxide and carbon nanotube composites for methanol oxidation
title_sort activity and stability improvement of platinum loaded on reduced graphene oxide and carbon nanotube composites for methanol oxidation
publishDate 2020
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85076117772&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/68296
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