Catalytic Activity of Bimetallic Au@Pt Core-Shell Over CeO2-Al2O3 for CO Oxidation Reaction
The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science...
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Faculty of Science, Chiang Mai University
2020
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th-cmuir.6653943832-686492020-05-20T04:41:50Z Catalytic Activity of Bimetallic Au@Pt Core-Shell Over CeO2-Al2O3 for CO Oxidation Reaction Wichet Lamai Akkarat Wongkaew Bimetallic Au-Pt Strong electrostatic adsorption Electroless deposition CO oxidation reaction PEMFCs. The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science are welcomed except in areas such as agriculture, engineering and medical science which are outside the scope of the Journal. Currently, we focus on manuscripts in biology, chemistry, physics, materials science and environmental science. Papers in mathematics statistics and computer science are also included but should be of an applied nature rather than purely theoretical. Manuscripts describing experiments on humans or animals are required to provide proof that all experiments have been carried out according to the ethical regulations of the respective institutional and/or governmental authorities and this should be clearly stated in the manuscript itself. The Editor reserves the right to reject manuscripts that fail to do so. In this work, bimetallic Au@Pt core shell catalysts were synthesized using electroless deposition (ED) of Pt on a Au/CeO2-Al2O3 catalyst prepared by strong electrostatic adsorption (SEA). The CeO2-Al2O3 support was prepared by co-precipitation. TEM characterization of Au/CeO2-Al2O3 showed well dispersed particles with an average Au crystalline size of 5-6 nm. In ED preparation, ED bath containing PtCl62- as a Pt precursor, ethylene diamine as a stabilizer and hydrazine as reducing agent successfully deposited Pt on Au particles with the loading of 0.5, 0.8 and 1.2 %wt. Physical adsorption of N2 confirmed mesoporous materials. TEM-EDS mapping and XPS indicated the core-shell structure of Au@Pt catalysts. Catalytic activities of bimetallic Au@Pt core shell catalysts for CO oxidation reaction were conducted. Catalysts with Pt loading of 0.8 and 1.2%wt completely converted CO to CO2 at 140oC and 170oC for 0.5%Pt loading. Comparison of catalytic activities of monometallic Pt, Au, and bimetallic Pt-Au alloy with Au@Pt core shell were also investigated. Complete CO conversions occurred at 240oC for both monometallic catalysts and about 10% CO conversion at the same temperature for bimetallic Pt-Au alloy. These results indicated the improvement of catalytic activity of bimetallic core shell structure. 2020-05-20T04:41:50Z 2020-05-20T04:41:50Z 2020 Chiang Mai Journal of Science 47,2 (March 2020), p.278 - 287 2465-3845 https://epg.science.cmu.ac.th/ejournal/dl.php?journal_id=10701 http://cmuir.cmu.ac.th/jspui/handle/6653943832/68649 Eng Faculty of Science, Chiang Mai University |
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Bimetallic Au-Pt Strong electrostatic adsorption Electroless deposition CO oxidation reaction PEMFCs. |
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Bimetallic Au-Pt Strong electrostatic adsorption Electroless deposition CO oxidation reaction PEMFCs. Wichet Lamai Akkarat Wongkaew Catalytic Activity of Bimetallic Au@Pt Core-Shell Over CeO2-Al2O3 for CO Oxidation Reaction |
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The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science are welcomed except in areas such as agriculture, engineering and medical science which are outside the scope of the Journal. Currently, we focus on manuscripts in biology, chemistry, physics, materials science and environmental science. Papers in mathematics statistics and computer science are also included but should be of an applied nature rather than purely theoretical. Manuscripts describing experiments on humans or animals are required to provide proof that all experiments have been carried out according to the ethical regulations of the respective institutional and/or governmental authorities and this should be clearly stated in the manuscript itself. The Editor reserves the right to reject manuscripts that fail to do so. |
author |
Wichet Lamai Akkarat Wongkaew |
author_facet |
Wichet Lamai Akkarat Wongkaew |
author_sort |
Wichet Lamai |
title |
Catalytic Activity of Bimetallic Au@Pt Core-Shell Over CeO2-Al2O3 for CO Oxidation Reaction |
title_short |
Catalytic Activity of Bimetallic Au@Pt Core-Shell Over CeO2-Al2O3 for CO Oxidation Reaction |
title_full |
Catalytic Activity of Bimetallic Au@Pt Core-Shell Over CeO2-Al2O3 for CO Oxidation Reaction |
title_fullStr |
Catalytic Activity of Bimetallic Au@Pt Core-Shell Over CeO2-Al2O3 for CO Oxidation Reaction |
title_full_unstemmed |
Catalytic Activity of Bimetallic Au@Pt Core-Shell Over CeO2-Al2O3 for CO Oxidation Reaction |
title_sort |
catalytic activity of bimetallic au@pt core-shell over ceo2-al2o3 for co oxidation reaction |
publisher |
Faculty of Science, Chiang Mai University |
publishDate |
2020 |
url |
https://epg.science.cmu.ac.th/ejournal/dl.php?journal_id=10701 http://cmuir.cmu.ac.th/jspui/handle/6653943832/68649 |
_version_ |
1681752663709974528 |