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Search results (46 of 74)

Materiales MOF para el almacenamiento de hidrógeno

2012
M.A. Orcajo , J. A. Botas , Guillermo Calleja , Manuel Sánchez Sánchez
Anales de Química
The study of sorbent materials having prominent textural properties ga...

Combined ATR-SEIRAS and EC-STM Study of the Immobilization of Laccase on Chemically Modified Au Electrodes

2012
Cristina Vaz Dominguez, Marcos Pita Martínez, Antonio López de Lacey, Sergey Shleev , Ángel Cuesta Ciscar
Journal of Physical Chemistry CThe successive steps of laccase immobilization on chemically modified Au electrodes were monitored using ATR-SEIRAS and in situ STM. Successful covalent immobilization of the enzyme on Au electrodes modified by a mixed aminophenyl-mercaptohexanol adlayer and on Au electrodes modified by a 4-aminothiophenyl SAM via a Schiff base reaction followed by the formation of amide bonds is revealed by the emergence of the corresponding bands in the ATR-SEIRA spectra, and an enzyme coverage on aminophenyl-mercaptohexanol-modified Au electrodes of about (7.27 ± 1.93) × 1011 laccase units per cm2 was calculated from STM images. The small differences between the ATR-SEIRA spectra of the enzyme immobilized on aminophenyl-mercaptohexanol-modified Au electrodes and the ATR-SEIRA spectra of the enzyme immobilized on 4-aminothiophenyl-modified Au electrodes are attributed to a different orientation of the immobilized enzyme due to the presence on the surface of aminophenyl-mercaptohexanol-modified Au electrodes of OH functional groups that favor an orientation of laccase with the Cu T1 center of the enzyme facing the electrode surface, thus, allowing a high activity for direct electrocatalysis of the ORR at low overpotentials.
The successive steps of laccase immobilization on chemically modif...

Design of activated carbon–clay composites for effluent decontamination.

2012
Microporous and Mesoporous Materials
Adsorption offers an efficient technology for removing volatile organi...

Structural Characterization of Operating Catalysts by Raman Spectroscopy

2011
Miguel A. Bañares, G Mestl
Advances in Catalysis
Abstract

Thermodynamic and experimental study of combined dry and steam reforming of methane on Ru/ ZrO2-La2O3 catalyst at low temperature

2011
Miguel Ángel Soria , Cecilia Mateos Pedrero, Antonio Guerrero Ruiz, Inmaculada Rodríguez Ramos
International Journal of Hydrogen Energy
Analysis of the effect of adding small amounts of steam to the methane...

Immobilized Biocatalysts: Novel Approaches and Tools for Binding Enzymes to Supports

2011
Pamela Torres Salas, Alberto del Monte Martinez , Bessy Cutiño-Avila , Rodriguez-Colinas B., Miguel Alcalde Galeote, Antonio Ballesteros Olmo, Francisco José Plou Gasca
Advanced Materials
In the last decade, new trends for enzyme attachment to solid carriers...
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