ELECTROCATALYTIC PROPERTIES OF NANOSTRUCTURED MULTIMETALLIC Pt-Sn- Cs/C AND Pt-M/C (M=Ag, Ca, Cd, Cs, Cu, Fe, Ir, Mg, Pd, Sn, Zr) DIRECT ETHANOL FUEL CELL CATALYSTS

Hilal Kıvrak; N.ceyhun Demir; Özlem Şahin

Conference Paper

ELECTROCATALYTIC PROPERTIES OF NANOSTRUCTURED MULTIMETALLIC Pt-Sn- Cs/C AND Pt-M/C (M=Ag, Ca, Cd, Cs, Cu, Fe, Ir, Mg, Pd, Sn, Zr) DIRECT ETHANOL FUEL CELL CATALYSTS

Year 2013, Volume: 1 Issue: 2, 19 - 28, 01.06.2013

Abstract

Carbon supported Pt and Pt-M (M=Ag, Ca, Cd, Cs, Cu, Fe, Ir, Mg, Pd, Sn, Zr) bimetallic nanocatalysts (10% Pt loading) and Pt-Sn-Cs trimetallic nanocatalysts were prepared by ethylene glycol (EG) reduction method. The ethanol electrooxidation (EOR) performance of these catalysts were studied by cyclic voltammetry (CV), chronoamperometry (CA), electrochemical impedance spectroscopy (EIS) techniques. Considering Pt-M bimetallic nanocatalysts, carbon supported Pt-Sn bimetallic nanocatalyst showed the best EOR activity as a result of these CV, CA, EIS measurements. Furthermore, Cs promoted Pt bimetallic nanocatalyst also improved the activity of reverse current, attributed to the basic character of Cs. Pt-Sn nanocatalyst was promoted by Cs to neutralize the surface acid sites of the Pt-Sn nanocatalyst. Pt-Sn-Cs/C nanocatalyst showed the superior activity compared to Pt-Sn nanocatalysts. Hence, we further performed EIS measurements on Pt-Sn-Cs, Pt-Sn, Pt-Cs nanocatalysts to compare their electrocatalytic activities.

Keywords

Ethanol Electrooxidation, Pt, Sn, Cs, Anode Catalyst

Nanoyapılı Multimetalik Pt-Sn-Cs/C ve Pt-M/C (M=Ag, Ca, Cd, Cs, Cu, Fe, Ir, Mg, Pd, Sn, Zr) Doğrudan Beslemeli Etanol Yakıt Pili Katalizörlerinin Elektrokatalitik Özellikleri

Year 2013, Volume: 1 Issue: 2, 19 - 28, 01.06.2013

Hilal Kıvrak N.ceyhun Demir Özlem Şahin

Abstract

Karbon destekli Pt ve Pt-M (M=Ag, Ca, Cd, Cs, Cu, Fe, Ir, Mg, Pd, Sn, Zr) bimetalik nanokatalizörler (10% Pt yüklemesi) ve Pt-Sn-Cs trimetalik nanokatalizörler etilen glikol (EG) indirgenme yöntemi ile hazırlanır. Etanol elektro oksitlenme (EOR) performansları döngüsel voltametre (CV), kronoamperometre (CA) ve elektrokimyasal impedans spektroskopisi (EIS) yöntemleri ile çalışılmıştır. Yapılan CV, CA ve EIS ölçümleri sonucunda bimetalik nanokatalizörlerinden karbon destekli Pt-Sn kalay katalizörü en iyi EOR aktivitesini göstermiştir. Ayrıca, Cs katkılanmış Pt bimetalik katalizöründe geri akım pikin aktivitesinin arttığı gözlenmiştir. Bu artışın sebebi Cs metalinin bazik karakterde olmasına bağlanmıştır. Pt-Sn bimetalik nanokatalizörü de Pt-Sn katalizörünün yüzeyindeki asit sitelerini nötralize etmek amacı ile Cs ile katkılanmıştır. Pt-Sn-Cs/C trimetalik katalizörü Pt-Sn da dahil olmak üzere diğer bimetalik katalizörler ile karşılaştırıldığında en iyi aktiviteyi göstermiştir. Bu yüzden Pt-Sn-Cs, Pt-Sn, Pt-Cs nanokatalizörleri üzerinde EIS ölçümleri yapılarak bu katalizörlerin elektrokimyasal özellikleri ayrıntılı olarak incelenmiştir.

Keywords

Etanol Elektrooksitlenmesi, Pt, Sn, Cs, Anot Katalizörü.

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Details

Primary Language	English
Subjects	Engineering
Other ID	JA47DC78MJ
Journal Section	Articles
Authors	Hilal Kıvrak This is me N.ceyhun Demir This is me Özlem Şahin This is me
Publication Date	June 1, 2013
Published in Issue	Year 2013 Volume: 1 Issue: 2

Cite

APA	Kıvrak, H., Demir, N., & Şahin, Ö. (2013). ELECTROCATALYTIC PROPERTIES OF NANOSTRUCTURED MULTIMETALLIC Pt-Sn- Cs/C AND Pt-M/C (M=Ag, Ca, Cd, Cs, Cu, Fe, Ir, Mg, Pd, Sn, Zr) DIRECT ETHANOL FUEL CELL CATALYSTS. Selçuk Üniversitesi Mühendislik, Bilim Ve Teknoloji Dergisi, 1(2), 19-28.
AMA	Kıvrak H, Demir N, Şahin Ö. ELECTROCATALYTIC PROPERTIES OF NANOSTRUCTURED MULTIMETALLIC Pt-Sn- Cs/C AND Pt-M/C (M=Ag, Ca, Cd, Cs, Cu, Fe, Ir, Mg, Pd, Sn, Zr) DIRECT ETHANOL FUEL CELL CATALYSTS. sujest. June 2013;1(2):19-28.
Chicago	Kıvrak, Hilal, N.ceyhun Demir, and Özlem Şahin. “ELECTROCATALYTIC PROPERTIES OF NANOSTRUCTURED MULTIMETALLIC Pt-Sn- Cs/C AND Pt-M/C (M=Ag, Ca, Cd, Cs, Cu, Fe, Ir, Mg, Pd, Sn, Zr) DIRECT ETHANOL FUEL CELL CATALYSTS”. Selçuk Üniversitesi Mühendislik, Bilim Ve Teknoloji Dergisi 1, no. 2 (June 2013): 19-28.
EndNote	Kıvrak H, Demir N, Şahin Ö (June 1, 2013) ELECTROCATALYTIC PROPERTIES OF NANOSTRUCTURED MULTIMETALLIC Pt-Sn- Cs/C AND Pt-M/C (M=Ag, Ca, Cd, Cs, Cu, Fe, Ir, Mg, Pd, Sn, Zr) DIRECT ETHANOL FUEL CELL CATALYSTS. Selçuk Üniversitesi Mühendislik, Bilim Ve Teknoloji Dergisi 1 2 19–28.
IEEE	H. Kıvrak, N. Demir, and Ö. Şahin, “ELECTROCATALYTIC PROPERTIES OF NANOSTRUCTURED MULTIMETALLIC Pt-Sn- Cs/C AND Pt-M/C (M=Ag, Ca, Cd, Cs, Cu, Fe, Ir, Mg, Pd, Sn, Zr) DIRECT ETHANOL FUEL CELL CATALYSTS”, sujest, vol. 1, no. 2, pp. 19–28, 2013.
ISNAD	Kıvrak, Hilal et al. “ELECTROCATALYTIC PROPERTIES OF NANOSTRUCTURED MULTIMETALLIC Pt-Sn- Cs/C AND Pt-M/C (M=Ag, Ca, Cd, Cs, Cu, Fe, Ir, Mg, Pd, Sn, Zr) DIRECT ETHANOL FUEL CELL CATALYSTS”. Selçuk Üniversitesi Mühendislik, Bilim Ve Teknoloji Dergisi 1/2 (June 2013), 19-28.
JAMA	Kıvrak H, Demir N, Şahin Ö. ELECTROCATALYTIC PROPERTIES OF NANOSTRUCTURED MULTIMETALLIC Pt-Sn- Cs/C AND Pt-M/C (M=Ag, Ca, Cd, Cs, Cu, Fe, Ir, Mg, Pd, Sn, Zr) DIRECT ETHANOL FUEL CELL CATALYSTS. sujest. 2013;1:19–28.
MLA	Kıvrak, Hilal et al. “ELECTROCATALYTIC PROPERTIES OF NANOSTRUCTURED MULTIMETALLIC Pt-Sn- Cs/C AND Pt-M/C (M=Ag, Ca, Cd, Cs, Cu, Fe, Ir, Mg, Pd, Sn, Zr) DIRECT ETHANOL FUEL CELL CATALYSTS”. Selçuk Üniversitesi Mühendislik, Bilim Ve Teknoloji Dergisi, vol. 1, no. 2, 2013, pp. 19-28.
Vancouver	Kıvrak H, Demir N, Şahin Ö. ELECTROCATALYTIC PROPERTIES OF NANOSTRUCTURED MULTIMETALLIC Pt-Sn- Cs/C AND Pt-M/C (M=Ag, Ca, Cd, Cs, Cu, Fe, Ir, Mg, Pd, Sn, Zr) DIRECT ETHANOL FUEL CELL CATALYSTS. sujest. 2013;1(2):19-28.