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Title: :  Exploration of electrodeposited platinum alloy catalysts for methanol electro-oxidation in 1 M H2SO4: Pt-Au system
PaperId: :  6363
Published in:   International Journal Of Advance Research And Innovative Ideas In Education
Publisher:   IJARIIE
e-ISSN:   2395-4396
Volume/Issue:    Volume 3 Issue 4 2017
DUI:    16.0415/IJARIIE-6363
Licence: :   IJARIIE is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

Author NameAuthor Institute
S Radha JeyalaskshmiPrince shri Venkateshwara Padmavathy Engineering College
Deepa ParthasarathyPrince shri Venkateshwara Padmavathy Engineering College
B KalpanaPrince shri Venkateshwara Padmavathy Engineering College
T PremalathaPrince shri Venkateshwara Padmavathy Engineering College

Abstract

Applied chemistry
methanol,electro-oxidation,electrocatalysts
The electrocatalytic activity of electrodeposited Platinum (Pt)-Gold (Au) alloy layers on an inert substrate electrode for methanol oxidation reaction. Analyses using energy-dispersive fluorescent X-ray analysis and powder X-ray diffrac-tometry confirm alloying of Pt with Au in a range of compositions. Steady-state polarisation measurements in 1 M methanol+1 M H2SO4 solutions clearly show that the onset of electro-oxidation shifts to less anodic potential values (approximately 160 mV), while also exhibiting current enhancements up to _15 times the currents obtained for the pure Pt electrodeposit. A linear relationship between the cyclic voltammetric peak (oxidation) current and [MeOH] is observed at a scan rate of 50 mVs)1, thus indicating reduced influence of adsorbed CO (COads) surface poison. A critical com-position, Pt (92%)/Au (8%) [denoted Pt-Au(3) alloy] is found to exhibit maximum electrocatalytic activity, be-yond which the activity drops, whereas pure Au does not catalyse the reaction. While the promotion of electro-oxidation is understood to be largely due to the alloy catalyst, surface redox species of Au oxide formed during the electro-oxidation process may also contribute to the oxygenation of COads, thereby enhancing the oxidation current. Plausible mechanisms of methanol oxidation on Pt/ transition metal alloy electrocatalysts are discussed in terms of electron transfer (in the alloy) and the role of Au oxide species.

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IJARIIE S Radha Jeyalaskshmi, Deepa Parthasarathy, B Kalpana, and T Premalatha. "Exploration of electrodeposited platinum alloy catalysts for methanol electro-oxidation in 1 M H2SO4: Pt-Au system" International Journal Of Advance Research And Innovative Ideas In Education Volume 3 Issue 4 2017 Page 3139-3144
MLA S Radha Jeyalaskshmi, Deepa Parthasarathy, B Kalpana, and T Premalatha. "Exploration of electrodeposited platinum alloy catalysts for methanol electro-oxidation in 1 M H2SO4: Pt-Au system." International Journal Of Advance Research And Innovative Ideas In Education 3.4(2017) : 3139-3144.
APA S Radha Jeyalaskshmi, Deepa Parthasarathy, B Kalpana, & T Premalatha. (2017). Exploration of electrodeposited platinum alloy catalysts for methanol electro-oxidation in 1 M H2SO4: Pt-Au system. International Journal Of Advance Research And Innovative Ideas In Education, 3(4), 3139-3144.
Chicago S Radha Jeyalaskshmi, Deepa Parthasarathy, B Kalpana, and T Premalatha. "Exploration of electrodeposited platinum alloy catalysts for methanol electro-oxidation in 1 M H2SO4: Pt-Au system." International Journal Of Advance Research And Innovative Ideas In Education 3, no. 4 (2017) : 3139-3144.
Oxford S Radha Jeyalaskshmi, Deepa Parthasarathy, B Kalpana, and T Premalatha. 'Exploration of electrodeposited platinum alloy catalysts for methanol electro-oxidation in 1 M H2SO4: Pt-Au system', International Journal Of Advance Research And Innovative Ideas In Education, vol. 3, no. 4, 2017, p. 3139-3144. Available from IJARIIE, http://ijariie.com/AdminUploadPdf/Exploration_of_electrodeposited_platinum_alloy_catalysts_for_methanol_electro_oxidation_in_1_M_H2SO4__Pt_Au_system_ijariie6363.pdf (Accessed : ).
Harvard S Radha Jeyalaskshmi, Deepa Parthasarathy, B Kalpana, and T Premalatha. (2017) 'Exploration of electrodeposited platinum alloy catalysts for methanol electro-oxidation in 1 M H2SO4: Pt-Au system', International Journal Of Advance Research And Innovative Ideas In Education, 3(4), pp. 3139-3144IJARIIE [Online]. Available at: http://ijariie.com/AdminUploadPdf/Exploration_of_electrodeposited_platinum_alloy_catalysts_for_methanol_electro_oxidation_in_1_M_H2SO4__Pt_Au_system_ijariie6363.pdf (Accessed : )
IEEE S Radha Jeyalaskshmi, Deepa Parthasarathy, B Kalpana, and T Premalatha, "Exploration of electrodeposited platinum alloy catalysts for methanol electro-oxidation in 1 M H2SO4: Pt-Au system," International Journal Of Advance Research And Innovative Ideas In Education, vol. 3, no. 4, pp. 3139-3144, Jul-Aug 2017. [Online]. Available: http://ijariie.com/AdminUploadPdf/Exploration_of_electrodeposited_platinum_alloy_catalysts_for_methanol_electro_oxidation_in_1_M_H2SO4__Pt_Au_system_ijariie6363.pdf [Accessed : ].
Turabian S Radha Jeyalaskshmi, Deepa Parthasarathy, B Kalpana, and T Premalatha. "Exploration of electrodeposited platinum alloy catalysts for methanol electro-oxidation in 1 M H2SO4: Pt-Au system." International Journal Of Advance Research And Innovative Ideas In Education [Online]. volume 3 number 4 ().
Vancouver S Radha Jeyalaskshmi, Deepa Parthasarathy, B Kalpana, and T Premalatha. Exploration of electrodeposited platinum alloy catalysts for methanol electro-oxidation in 1 M H2SO4: Pt-Au system. International Journal Of Advance Research And Innovative Ideas In Education [Internet]. 2017 [Cited : ]; 3(4) : 3139-3144. Available from: http://ijariie.com/AdminUploadPdf/Exploration_of_electrodeposited_platinum_alloy_catalysts_for_methanol_electro_oxidation_in_1_M_H2SO4__Pt_Au_system_ijariie6363.pdf
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