Hybrid nanomaterials based on zinc oxide were synthesized via the sol-gel method, using different silane coupling agents: (3-glycidyloxypropyl)trimethoxysilane (GPTMS), phenyltriethoxysilane (PhTES), octyltriethoxysilane (OTES), and octadecyltriethoxysilane (ODTES). Morphological properties and the silane precursor type effect on the particle size were investigated using dynamic light scatterin...

Abstract Mg alloys are considered a promising alternative to use as biodegradable implants. However, the main limitations of these high susceptibility hydrogen evolution and corrosion. Consequently, it is necessary control corrosion rate through surface treatment techniques. In this regard, double layer system, based on first deposition MgO coating subsequent an organo-silane sol-gel (anodized/...

Nanosized zinc oxide (ZnO) particles modified with different silane coupling agents (octyltriethoxysilane (OTES), octadecyltriethoxysilane (ODTES) and (3-glycidyloxypropyl)trimethoxysilane (GPTMS)) were synthesized in basic catalysis using the sol-gel method. The structure morphology characterized by dynamic light scattering (DLS), environmental scanning electron microscopy (ESEM) Fourier trans...

Silver nanocomposite coatings are prepared by the sol-gel method for the prevention of biofilm formation on the surface of medical implanted devices. High-temperature processing of such coatings can lead to diffusion of nanosilver and reduce the amount of available silver particles for long-term effects. Using a low-temperature sol-gel method, we have successfully prepared silane-based matrices...

Mesoporous fluorinated organosilicate films were synthesized from tetramethoxysilane and perfluoroalkylsilanes (RO)3Si-R’ [R ~ Me, Et; R’ ~ (CH2)2CF3, (CH2)2(CF2)5CF3, or (CH2)2(CF2)7CF3] under acidic conditions in the presence of cetyltrimethylammonium chloride (CTACl) by sol–gel spin-coating. Calcination at 350 uC allowed the removal of surfactants without destroying the other organic content...

Calcium phosphates and bioactive glasses have been used in many biomedical applications for more than 30 years due basically to their bioactive behavior. However, ceramics are too brittle for applications that require high levels of toughness and easy processability. In this work, a biphasic calcium phosphate (BCP) and a bioactive glass composition (BG) were combined with polymers to produce co...

Various phosphosilicate doped polypyrrole proton conductive thin films composite membranes were successfully prepared. Phosphosilicate obtained by sol-gel process mixing tetraethoxy silane with phosphoric acid at a molar ratio 1:5. The conductivity increased increasing both the content of gel and relative humidity. Temperature dependence showed Vogel-Tamman-Fulcher type behavior, indicating tha...

The sol-gel synthesis process is a versatile method used to produce wide diversity of materials and being increasingly as surface modification alter porosity, wettability, catalytic activity, biocompatibility corrosion performance underlying substrates. Silane sol–gel films deposited on aluminium alloys have been widely studied chemical conversion coatings coupling agent between the substrate o...