Results 81 to 90 of about 3,172 (245)

PRELIMINARY STUDY FOR USING VINYLTRIACETOXYSILANE AS PRECURSOR IN ENZYME IMMOBILIZATION BASED ON SOL-GEL METHOD [PDF]

open access: yes, 2007
During the last years, sol-gel technology has become a well-established method for the preparation of catalytic active monoliths, bulk, particles and thin films.
Dudás, Zoltán Imre   +2 more
core  

SIMPLE ENTRAPMENT OF ALCALASE IN DIFFERENT SILICA XEROGELS USING THE TWO STEPS SOL-GEL METHOD [PDF]

open access: yes, 2011
The present study has focused on the entrapment of Alcalase in different xerogels obtained by using various molar ratios of methyltriethoxysilane, dimethyldietoxisilane and tetraethoxysilane.
Chiriac, A.   +2 more
core  

Surface structure and reactivity study of phosphotungstic acid-nitrogenated ormosils [PDF]

open access: yesJournal of Sol-Gel Science and Technology, 2013
Supramolecular interactions between nitrogenated groups in hybrid ormosils bearing phosphotungstate nanocatalyst were used to tune the photocatalytical activity of these class-II hybrid materials obtained through sol-gel chemistry. Surface chemistry and morphology of the materials was studied by scanning electron microscopy, atomic force microscopy, X ...
Ferreira Neto, Elias P.   +9 more
openaire   +2 more sources

A covalent organic/inorganic hybrid proton exchange polymeric membrane: synthesis and characterization [PDF]

open access: yes, 2005
Commercial polyetheretherketone (Victrex PEEK) was sulfonated up to 90% degree of sulfonation (DS), then reacted with SiCl4 to obtain a hybrid polymer. The product was characterized by 29-Si NMR and ATR/FTIR spectroscopies demonstrating the formation of
D'Epifanio, A   +5 more
core   +1 more source

Photochromic properties of spirooxazine dyes in ormocer gels and coatings [PDF]

open access: yes, 1992
The wet- and "cold"-chemical characteristic of sol-gel process makes the sol-gel derived materials offer exciting potentials as hosts for photochromic dyes.
Hou, Lisong   +2 more
core   +2 more sources

A Biohybrid Catalyst for Cross-Coupling Reactions That Contains Pd/P.yeei@ORMOSIL

open access: yesInorganics
This study demonstrates the feasibility of encapsulating Paracoccus yeei VKM B-3302 cells, which contain palladium nanoparticles, within an organosilicon matrix synthesized using the sol–gel method.
Olga A. Kamanina   +5 more
doaj   +1 more source

Hybrid sol-gel coatings: smart and green materials for corrosion mitigation [PDF]

open access: yes, 2016
Corrosion degradation of materials and metallic structures is one of the major issues that give rise to depreciation of assets, causing great financial outlays in their recovery and or prevention.
Figueira, Rita Maria Burguete Bacelar Marreiros   +3 more
core   +2 more sources

Estudio por espectroscopía infrarroja de la reacción de hidrólisis y policondensación del IEOS en presencia de PDMS

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2001
In this work, we have studied, by FT-IR Spectroscopy, the influence of the molecular weight of organic polymers (polydimethylsiloxane, PDMS) in the hydrolysis and polycondensation reactions of tetraethylortosilicate (TEOS) in acid medium.
Velasco, M. J., Rubio, J., Oteo, J. L.
doaj  

Mejora de sensores vítreos sol-gel para la conservación preventiva de materiales históricos frente a la acidez [PDF]

open access: yes, 2007
[ES] Los sensores a base de recubrimientos vítreos sol-gel dopados con ácido 2[4-(dimetil-amino) fenilazo] benzoico son capaces de cambiar su absorción óptica cuando se someten a distintas concentraciones de iones H3O+ y OH-. La respuesta de los sensores
Heimbach, F.   +9 more
core   +1 more source

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