An Investigation of a Polydopamine-Graphene Oxide Composite as a Support for an Anode Fuel Cell Catalyst

© 2016, Springer Science+Business Media New York. Home-made graphene oxide (GO) with a high surface area was functionalized by polydopamine (PDA) and was labeled PDA-GO, while GO without PDA was labeled as GO. With different compositions of metals (Pt and/or Pd), the electrodeposition of the metals...

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Main Authors: Aunanong Pinithchaisakula, Suwaphid Themsirimongkon, Napapha Promsawan, Paralee Weankeaw, Kontad Ounnunkad, Surin Saipanya
Format: Journal
Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/46607
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-466072018-04-25T07:29:48Z An Investigation of a Polydopamine-Graphene Oxide Composite as a Support for an Anode Fuel Cell Catalyst Aunanong Pinithchaisakula Suwaphid Themsirimongkon Napapha Promsawan Paralee Weankeaw Kontad Ounnunkad Surin Saipanya Agricultural and Biological Sciences © 2016, Springer Science+Business Media New York. Home-made graphene oxide (GO) with a high surface area was functionalized by polydopamine (PDA) and was labeled PDA-GO, while GO without PDA was labeled as GO. With different compositions of metals (Pt and/or Pd), the electrodeposition of the metals onto the prepared GO and PDA-GO supports was prepared for the anode electrocatalyst. The electrocatalytic activities of the electrocatalysts (xPtPd/GO and xPtPd/PDA-GO, where x = 1–5) were studied in the oxidation of alcohols (e.g., methanol and ethanol). Morphologies obtained from transmission electron microscopy (TEM), scanning electron microscopy (SEM), and atomic force microscopy (AFM) images showed that the as-prepared GO and PDA-GO supports can accommodate electrodeposited metals loaded on the topmost layer of the support surfaces, although the size of nanoparticles is somewhat different. The electrochemical results indicated that the xPtPd/PDA-GO catalysts offered outstanding oxidation efficiencies. The prepared 5PtPd/PDA-GO catalyst provided enhanced activity and long-time stability in the oxidation reactions. The GO surface modified by the polymer and the other electrodeposited metal catalysts provided a larger number of available active sites, as the PDA offered a greater electric connection between the metal catalysts and the GO support during alcohol oxidation. [Figure not available: see fulltext.] 2018-04-25T06:57:55Z 2018-04-25T06:57:55Z 2017-01-01 Journal 18685994 18682529 2-s2.0-85006355385 10.1007/s12678-016-0338-6 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85006355385&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/46607
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Agricultural and Biological Sciences
spellingShingle Agricultural and Biological Sciences
Aunanong Pinithchaisakula
Suwaphid Themsirimongkon
Napapha Promsawan
Paralee Weankeaw
Kontad Ounnunkad
Surin Saipanya
An Investigation of a Polydopamine-Graphene Oxide Composite as a Support for an Anode Fuel Cell Catalyst
description © 2016, Springer Science+Business Media New York. Home-made graphene oxide (GO) with a high surface area was functionalized by polydopamine (PDA) and was labeled PDA-GO, while GO without PDA was labeled as GO. With different compositions of metals (Pt and/or Pd), the electrodeposition of the metals onto the prepared GO and PDA-GO supports was prepared for the anode electrocatalyst. The electrocatalytic activities of the electrocatalysts (xPtPd/GO and xPtPd/PDA-GO, where x = 1–5) were studied in the oxidation of alcohols (e.g., methanol and ethanol). Morphologies obtained from transmission electron microscopy (TEM), scanning electron microscopy (SEM), and atomic force microscopy (AFM) images showed that the as-prepared GO and PDA-GO supports can accommodate electrodeposited metals loaded on the topmost layer of the support surfaces, although the size of nanoparticles is somewhat different. The electrochemical results indicated that the xPtPd/PDA-GO catalysts offered outstanding oxidation efficiencies. The prepared 5PtPd/PDA-GO catalyst provided enhanced activity and long-time stability in the oxidation reactions. The GO surface modified by the polymer and the other electrodeposited metal catalysts provided a larger number of available active sites, as the PDA offered a greater electric connection between the metal catalysts and the GO support during alcohol oxidation. [Figure not available: see fulltext.]
format Journal
author Aunanong Pinithchaisakula
Suwaphid Themsirimongkon
Napapha Promsawan
Paralee Weankeaw
Kontad Ounnunkad
Surin Saipanya
author_facet Aunanong Pinithchaisakula
Suwaphid Themsirimongkon
Napapha Promsawan
Paralee Weankeaw
Kontad Ounnunkad
Surin Saipanya
author_sort Aunanong Pinithchaisakula
title An Investigation of a Polydopamine-Graphene Oxide Composite as a Support for an Anode Fuel Cell Catalyst
title_short An Investigation of a Polydopamine-Graphene Oxide Composite as a Support for an Anode Fuel Cell Catalyst
title_full An Investigation of a Polydopamine-Graphene Oxide Composite as a Support for an Anode Fuel Cell Catalyst
title_fullStr An Investigation of a Polydopamine-Graphene Oxide Composite as a Support for an Anode Fuel Cell Catalyst
title_full_unstemmed An Investigation of a Polydopamine-Graphene Oxide Composite as a Support for an Anode Fuel Cell Catalyst
title_sort investigation of a polydopamine-graphene oxide composite as a support for an anode fuel cell catalyst
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85006355385&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/46607
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