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| Carvalho,Marta C. N. A.; Perez,Carlos A.; Simão,Renata A.; Passos,Fabio B.; Schmal,Martin. |
| Silver supported catalysts on alpha-alumina were prepared and characterized by Brunauer-Emmet-Teller equations, scanning electronic microscopy, X-ray diffraction and atomic force microscopy techniques. Results show that these are powerful techniques for the determination of texture, morphology and surface properties. It has been shown that the addition of Cs in the Ag/Al2O3 catalyst increased the dispersion of silver with the formation of small silver particles over a thin silver film already formed over the alumina support. It is important to stress that atomic force microscopy measurements are significant to observe the film and the dispersion of Ag and, on the contrary, X-ray photoelectronic spectroscopy did not, however, it allows to the conclusion... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Silver; Cesium; Catalyst; AFM; XPS. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000100003 |
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| Caro, A.; Humblot, V.; Minier, M.; Salmain, M.; Compère, Chantal; Pradier, C.-m.. |
| All surfaces that are immersed in seawater rapidly become covered by nitrogenous compounds, proteins, carbohydrates, salts, silica and bacteria in a few hours, and by a grown biofilm in a few days. These biodeterioration, physical and chemical damages involve important cleaning costs. Organostanic paintings used up to now to protect the surfaces against this spoiling will be prohibited in 2008 because of their toxicity. That's why the stake today is to find alternatives to these paintings. The solution which is here suggested consists in acting on the first stages of the formation of the biofilm i.e. the proteins and bacterial adsorption on the surface. For this, the surface is chemically modified then functionalized by enzymes. Enzymes will act locally on... |
| Tipo: Text |
Palavras-chave: Acier inoxydable; Fonctionnalisation; Enzymes; Adsorption bactérienne; PM-IRRAS; XPS; Stainless steel; Functionalization; Enzymes; Bacterial adsorption; IR; XPS. |
| Ano: 2006 |
URL: https://archimer.ifremer.fr/doc/00479/59095/61733.pdf |
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