The electrochemical entrapment of polyaniline (PANI) onto sol-gel derived tetraethylorthosilicate (TEOS) films deposited onto indium-tin-oxide (ITO) coated glass has been utilized for immobilization of lactate dehydrogenase (LDH). The performance of these sol-gel/PANI/LDH electrodes has been investigated as a function of the lactate concentration, applied potential, pH of the medium and interfe...

Gold-decorated silica nanoparticles were synthesized in a two-step process in which silica nanoparticles were produced by chemical vapor synthesis using tetraethylorthosilicate (TEOS) and subsequently decorated using two different gas-phase evaporative techniques. Both evaporative processes resulted in gold decoration of the silica particles. This study compares the mechanisms of particle decor...

Abstract The development of a simple and reproducible method for the synthesis monodisperse silica particles is considerable interest from point view their numerous applications in photonics, biosensing, biomedicine. When using well-known Stober method, there continuous formation growth seeds, which leads to polydisperse colloids. In this work, we used successive obtained by hydrolytic condensa...

Silica and silica-based materials with tunable functionalities are frequently encountered in low-k material applications, porous membranes, microelectonic devices. In the present study, an innovative O2/O3 assisted CVD process for deposition of such films at moderate temperature is presented, based on a dual precursor chemistry from hexamethyldisilazane (HMDS) tetraethyl orthosilicate (TEOS). F...

In this paper, we report a soft route leading to small gold nanoparticles confined within the framework of 2D-hexagonal mesoporous SH-functionalised silicas. For that purpose, a hydrophilic bis-silylated precursor containing a disulfide unit was prepared. Framework-functionalised materials were obtained in one step by the ‘‘direct synthesis’’ method which consists of a co-hydrolysis and polycon...

Gas-phase silver nanoparticles were coated with silicon dioxide (SiO2) by photoinduced chemical vapor deposition (photo-CVD). Silver nanoparticles, produced by inert gas condensation, and a SiO2 precursor, tetraethylorthosilicate (TEOS), were exposed to vacuum ultraviolet (VUV) radiation at atmospheric pressure and varying temperatures. The VUV photons dissociate the TEOS precursor, initiating ...

Abstract Herein, we investigated a new strategy to modify the graphene oxide (GO) with sodium alginate (SA) using tetraethylorthosilicate (TEOS) as binding agent. The oxide-sodium composite was highly loaded carboxylate (–COO ? Na + ) groups, which permitted fast and efficient interaction metal ions. Therefore, prepared employed an adsorbent uptake some heavy metals from aqueous solution. as-sy...

in this study, sio2 nanoparticles were successfully synthesized via sol-gel precipitation method and the effects of different parameters such as temperature, ethanol, ammonia and tetraethylorthosilicate (teos) contents based on water were investigated in a systematic way applying taguchi experimental design method. it was found that, among all the investigated parameters, ethanol as a co-solven...