Active and stable platinum/ionic liquid/carbon nanotube electrocatalysts for oxidation of methanol
Abstract Platinum (Pt) nanoparticles (NPs) on carbon nanotubes (CNTs) have been prepared from PtCl62− ions through a facile ionic liquid (IL)-assisted method and used for methanol oxidation. 1-Butyl-3-methylimidazolium (BMIM) with four different counter ions (PF6−, Cl−, Br−, and I−) has been tested...
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doaj-c7e36d6553c849ccabc633c8e88635252020-12-15T17:21:20ZengScienceOpenScienceOpen Research2199-10062015-06-0110.14293/S2199-1006.1.SOR-CHEM.AYZQJS.v2Active and stable platinum/ionic liquid/carbon nanotube electrocatalysts for oxidation of methanolHuan-Tsung ChangZih-Yu ShihArun PeriasamyGuan-Lin Lin Abstract Platinum (Pt) nanoparticles (NPs) on carbon nanotubes (CNTs) have been prepared from PtCl62− ions through a facile ionic liquid (IL)-assisted method and used for methanol oxidation. 1-Butyl-3-methylimidazolium (BMIM) with four different counter ions (PF6−, Cl−, Br−, and I−) has been tested for the preparation of Pt/IL/CNT nanohybrids, showing the counter ions of ILs play an important role in the formation of small sizes of Pt NPs. Only [BMIM][PF6] and [BMIM][Cl] allow reproducible preparation of Pt/IL/CNT nanohybrids. The electroactive surface areas of Pt/[BMIM][PF6]/CNT, Pt/[BMIM][Cl]/CNT, Pt/CNT, and commercial Pt/C electrodes are 62.8, 101.5, 78.3, and 87.4 m2 g−1, respectively. The Pt/[BMIM][Cl]/CNT nanohybrid-modified electrodes provide higher catalytic activity (251.0 A g−1) at a negative onset potential of −0.60 V than commercial Pt/C-modified ones do (133.5 A g−1) at −0.46 V. The Pt/[BMIM][Cl]/CNT electrode provides the highest ratio (4.52) of forward/reverse oxidation current peak, revealing a little accumulation of carbonaceous residues. https://www.scienceopen.com/document?vid=5d304b97-4244-4235-8cf7-546b348dd9fd |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Huan-Tsung Chang Zih-Yu Shih Arun Periasamy Guan-Lin Lin |
spellingShingle |
Huan-Tsung Chang Zih-Yu Shih Arun Periasamy Guan-Lin Lin Active and stable platinum/ionic liquid/carbon nanotube electrocatalysts for oxidation of methanol ScienceOpen Research |
author_facet |
Huan-Tsung Chang Zih-Yu Shih Arun Periasamy Guan-Lin Lin |
author_sort |
Huan-Tsung Chang |
title |
Active and stable platinum/ionic liquid/carbon nanotube electrocatalysts for oxidation of methanol |
title_short |
Active and stable platinum/ionic liquid/carbon nanotube electrocatalysts for oxidation of methanol |
title_full |
Active and stable platinum/ionic liquid/carbon nanotube electrocatalysts for oxidation of methanol |
title_fullStr |
Active and stable platinum/ionic liquid/carbon nanotube electrocatalysts for oxidation of methanol |
title_full_unstemmed |
Active and stable platinum/ionic liquid/carbon nanotube electrocatalysts for oxidation of methanol |
title_sort |
active and stable platinum/ionic liquid/carbon nanotube electrocatalysts for oxidation of methanol |
publisher |
ScienceOpen |
series |
ScienceOpen Research |
issn |
2199-1006 |
publishDate |
2015-06-01 |
description |
Abstract
Platinum (Pt) nanoparticles (NPs) on carbon nanotubes (CNTs) have been prepared from PtCl62− ions through a facile ionic liquid (IL)-assisted method and used for methanol oxidation. 1-Butyl-3-methylimidazolium (BMIM) with four different counter ions (PF6−, Cl−, Br−, and I−) has been tested for the preparation of Pt/IL/CNT nanohybrids, showing the counter ions of ILs play an important role in the formation of small sizes of Pt NPs. Only [BMIM][PF6] and [BMIM][Cl] allow reproducible preparation of Pt/IL/CNT nanohybrids. The electroactive surface areas of Pt/[BMIM][PF6]/CNT, Pt/[BMIM][Cl]/CNT, Pt/CNT, and commercial Pt/C electrodes are 62.8, 101.5, 78.3, and 87.4 m2 g−1, respectively. The Pt/[BMIM][Cl]/CNT nanohybrid-modified electrodes provide higher catalytic activity (251.0 A g−1) at a negative onset potential of −0.60 V than commercial Pt/C-modified ones do (133.5 A g−1) at −0.46 V. The Pt/[BMIM][Cl]/CNT electrode provides the highest ratio (4.52) of forward/reverse oxidation current peak, revealing a little accumulation of carbonaceous residues.
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url |
https://www.scienceopen.com/document?vid=5d304b97-4244-4235-8cf7-546b348dd9fd |
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