Exploration of unalloyed bimetallic Au–Pt/C nanoparticles for oxygen reduction reaction
The synthesis of carbon-supported unalloyed Au–Pt bimetallic nanoparticles using polyol method at a temperature as low as 85 °C is reported. Various compositions of Au–Pt/C bimetallic nanoparticles are characterized using transmission electron microscopy (TEM), X-ray florescence (XRF), X-ray diffrac...
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| Veröffentlicht in: | Journal of power sources 2009-02, Vol.187 (1), p.19-24 |
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| creator | Senthil Kumar, S. Phani, K.L.N. |
| description | The synthesis of carbon-supported unalloyed Au–Pt bimetallic nanoparticles using polyol method at a temperature as low as 85
°C is reported. Various compositions of Au–Pt/C bimetallic nanoparticles are characterized using transmission electron microscopy (TEM), X-ray florescence (XRF), X-ray diffraction and cyclic voltammetry. Electron microscopy shows that the particles have a near-narrow size distribution that peaks at an average size of ∼5 to 6
nm. The electrocatalytic activity of Au–Pt/C nanoparticles towards the oxygen reduction reaction (ORR) is studied by linear sweep polarization measurements obtained using a rotating disc electrode (RDE). The results reveal that a four-electron transfer pathway is mainly operative for ORR and the half-wave potential for ORR on bimetallic Au–Pt/C (20%:20%) is ∼100
mV less negative when compared with that of Pt/C (home-made and E-Tek). Studies of the methanol oxidation reaction (MOR) on these catalysts show that the MOR activity is significantly lowered with increasing content of Au in Au–Pt/C. |
| doi_str_mv | 10.1016/j.jpowsour.2008.10.121 |
| format | Article |
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°C is reported. Various compositions of Au–Pt/C bimetallic nanoparticles are characterized using transmission electron microscopy (TEM), X-ray florescence (XRF), X-ray diffraction and cyclic voltammetry. Electron microscopy shows that the particles have a near-narrow size distribution that peaks at an average size of ∼5 to 6
nm. The electrocatalytic activity of Au–Pt/C nanoparticles towards the oxygen reduction reaction (ORR) is studied by linear sweep polarization measurements obtained using a rotating disc electrode (RDE). The results reveal that a four-electron transfer pathway is mainly operative for ORR and the half-wave potential for ORR on bimetallic Au–Pt/C (20%:20%) is ∼100
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°C is reported. Various compositions of Au–Pt/C bimetallic nanoparticles are characterized using transmission electron microscopy (TEM), X-ray florescence (XRF), X-ray diffraction and cyclic voltammetry. Electron microscopy shows that the particles have a near-narrow size distribution that peaks at an average size of ∼5 to 6
nm. The electrocatalytic activity of Au–Pt/C nanoparticles towards the oxygen reduction reaction (ORR) is studied by linear sweep polarization measurements obtained using a rotating disc electrode (RDE). The results reveal that a four-electron transfer pathway is mainly operative for ORR and the half-wave potential for ORR on bimetallic Au–Pt/C (20%:20%) is ∼100
mV less negative when compared with that of Pt/C (home-made and E-Tek). Studies of the methanol oxidation reaction (MOR) on these catalysts show that the MOR activity is significantly lowered with increasing content of Au in Au–Pt/C.</description><subject>Applied sciences</subject><subject>Bimetals</subject><subject>Electrodes</subject><subject>Electron microscopy</subject><subject>Energy</subject><subject>Energy. Thermal use of fuels</subject><subject>Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc</subject><subject>Exact sciences and technology</subject><subject>Fuel cells</subject><subject>Gold</subject><subject>Methanol oxidation</subject><subject>Methyl alcohol</subject><subject>Nanoparticles</subject><subject>Oxygen reduction</subject><subject>Reduction</subject><subject>Rotating disc electrode</subject><subject>Unalloyed Au–Pt/C bimetallic nanoparticle</subject><subject>X-rays</subject><issn>0378-7753</issn><issn>1873-2755</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNqFULtOwzAUtRBIlMcvoCxILCm-dmynG6jiJSHBAAOT5TrXyFUaBzsBuvEP_CFfQtoCK8t9HJ1zH4eQI6BjoCBP5-N5G95S6OOYUVqOVziDLTKCUvGcKSG2yYhyVeZKCb5L9lKaU0oBFB2Rp4v3tg7RdD40WXBZ35i6DkussplfYDc03mbn_dfH5313Os0a04TWxM7bGlPmQszC-_IZmyxi1dv1kIhmXRyQHWfqhIc_eZ88Xl48TK_z27urm-n5bW65El2OqGaCT8qyAulMgZIVQxBAlaJMzAynglk24Y6BMwwrCVUhpGPMyILNoOT75GQzt43hpcfU6YVPFuvaNBj6pEEq4HTCGAxUuaHaGFKK6HQb_cLEpQaqV17quf71Uq-8XONr4fHPDpOsqV00jfXpT81gOHoii4F3tuHh8PCrx6iT9dhYrHxE2-kq-P9WfQNAG4-A</recordid><startdate>20090201</startdate><enddate>20090201</enddate><creator>Senthil Kumar, S.</creator><creator>Phani, K.L.N.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20090201</creationdate><title>Exploration of unalloyed bimetallic Au–Pt/C nanoparticles for oxygen reduction reaction</title><author>Senthil Kumar, S. ; Phani, K.L.N.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c375t-ee7b53988d16fa4e6244e651077025ba3052c293f21fa2ed61d456f22a642b183</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Applied sciences</topic><topic>Bimetals</topic><topic>Electrodes</topic><topic>Electron microscopy</topic><topic>Energy</topic><topic>Energy. Thermal use of fuels</topic><topic>Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc</topic><topic>Exact sciences and technology</topic><topic>Fuel cells</topic><topic>Gold</topic><topic>Methanol oxidation</topic><topic>Methyl alcohol</topic><topic>Nanoparticles</topic><topic>Oxygen reduction</topic><topic>Reduction</topic><topic>Rotating disc electrode</topic><topic>Unalloyed Au–Pt/C bimetallic nanoparticle</topic><topic>X-rays</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Senthil Kumar, S.</creatorcontrib><creatorcontrib>Phani, K.L.N.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of power sources</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Senthil Kumar, S.</au><au>Phani, K.L.N.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Exploration of unalloyed bimetallic Au–Pt/C nanoparticles for oxygen reduction reaction</atitle><jtitle>Journal of power sources</jtitle><date>2009-02-01</date><risdate>2009</risdate><volume>187</volume><issue>1</issue><spage>19</spage><epage>24</epage><pages>19-24</pages><issn>0378-7753</issn><eissn>1873-2755</eissn><coden>JPSODZ</coden><abstract>The synthesis of carbon-supported unalloyed Au–Pt bimetallic nanoparticles using polyol method at a temperature as low as 85
°C is reported. Various compositions of Au–Pt/C bimetallic nanoparticles are characterized using transmission electron microscopy (TEM), X-ray florescence (XRF), X-ray diffraction and cyclic voltammetry. Electron microscopy shows that the particles have a near-narrow size distribution that peaks at an average size of ∼5 to 6
nm. The electrocatalytic activity of Au–Pt/C nanoparticles towards the oxygen reduction reaction (ORR) is studied by linear sweep polarization measurements obtained using a rotating disc electrode (RDE). The results reveal that a four-electron transfer pathway is mainly operative for ORR and the half-wave potential for ORR on bimetallic Au–Pt/C (20%:20%) is ∼100
mV less negative when compared with that of Pt/C (home-made and E-Tek). Studies of the methanol oxidation reaction (MOR) on these catalysts show that the MOR activity is significantly lowered with increasing content of Au in Au–Pt/C.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.jpowsour.2008.10.121</doi><tpages>6</tpages></addata></record> |
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| ispartof | Journal of power sources, 2009-02, Vol.187 (1), p.19-24 |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | Applied sciences Bimetals Electrodes Electron microscopy Energy Energy. Thermal use of fuels Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc Exact sciences and technology Fuel cells Gold Methanol oxidation Methyl alcohol Nanoparticles Oxygen reduction Reduction Rotating disc electrode Unalloyed Au–Pt/C bimetallic nanoparticle X-rays |
| title | Exploration of unalloyed bimetallic Au–Pt/C nanoparticles for oxygen reduction reaction |
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