Wyniki wyszukiwania - BazTech

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The Effect of Mixed Support of Carbon Black and Nanographite on Catalytic Activity of Pt Catalysts for Methanol Electrooxidation

Teng Z., Wu B., Wang Y., Tang Y., Lu T., Gao Y.

Polish Journal of Chemistry

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2008

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Vol. 82, nr 11

2197-2206

EN

The effect of mixed support of carbon black and nanographite (CG) on electrocatalytic activity and stability of the supported Pt catalyst for the methanol oxidation was investigated. It was found that the electrocatalytic activity and stability of the supported Pt catalyst for the methanol oxidation depended on the mass ratio of carbon black and nanographite. When the mass ratio was 10:1, the electrocatalytic activity and stability of the CG supported Pt (Pt/CG) catalyst for the methanol oxidation was the best.

2

Dlaczego pilnie obserwujemy nanogramowe zawartości platyny w środowisku

Kowalska J., Asztemborska M., Golimowski J.

Analityka : nauka i praktyka

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2008

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nr 2

47-51

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Platyna a zdrowie człowieka. Pierwiastek szkodliwy czy pomocny?

Kaczmarczyk M., Bulska E.

Analityka : nauka i praktyka

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2007

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nr 2

34-37

4

The effects of the Pt-Sn/Al2O3 catalysts preparation methods on the chemisorption of carbon monoxide

Sarbak Z.

Polish Journal of Chemical Technology

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2006

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Vol. 8, nr 2

34-36

EN

The paper reports on the effect of the synthetic procedure of the Sn/AI2O3 catalyst on the type of the surface platinum centres. The catalysts were obtained with the method of incipient wetness introducing either the first tin followed by platinum after drying (the first series) or platinum and then tin (the second series) or two components simultaneously (the third series). The catalysts performance was studied by CO sorption and the type and the character of the chemisorption centres was determined by the FT-IR method. The results indicated the formation of different platinum centres: Pt^o, Pt^delta+ (δ+≤ 1), Pt^m+ (2 ≥ m > 1) depending on the sequence of the introduction of the active components.

5

Electric potential of biomaterials coated with dielectric carbon layer and non-coated in water and serum

Urbański S., Niedzielski P., Mitura S., Wierzchoń T., Sokołowska A.

Inżynieria Biomateriałów

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2006

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R. 9, nr 56-57

21-24

EN

Electric potentials, established in water and human blood serum, of the electrodes made of platinum, graphite, Ti6Al4V alloy, TiN, AlSi316L steel, oxidized steel and the materials coated with diamond like carbon layer (DLC) and a nanocrystalline-diamond layer (NCD) were determined. The values of the potentials of non-coated materials increased with increasing electron work function (Phi) of investigated materials in reasonable accordance. The difference between the potentials measured in serum and in water was ascribed to be differing molecular electron structure of the proteins in contact with the electrodes. Electrode potentials of different materials coated with the same thin dielectric carbon layer varied significantly depending on the (Phi) value of the substrate. In this way the selection of a substrate material permits influencing on the interaction between NCD (DLC) coating and serum compounds. The potential of an electrode has appeared to be a simple but sensitive indicator of the phenomena that take place on the biomaterial surface.