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, This work was supported by the NSF grant CHE-0848589, by the Academy of Sciences of the Czech Republic grant IAA400550511 (project Z40550506), and by the Czech Ministry of Education, Youth and Sports grants LC512 and MSM6198959216

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, Materials" program, grant 961 "projets exploratoires: Interface Science des Matériaux/Vivant") and the Agence Nationale de la Recherche (PAN-H 2008, EnzHyd). The authors thank E. Mayousse and P.-A. Jacques for experimental contribution and V. Derycke for assistance in the SEM characterizations. The authors have filed a European patent application (EP-08 290 988.8) for the grafting procedure of catalysts presented here, the CNRS

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