نتایج جستجو برای: free xerogel

تعداد نتایج: 514214  

2012
E. Carregal-Romero B. Ibarlucea S. Demming S. Büttgenbach C. Fernández-Sánchez A. Llobera

This work presents the monolithic integration of a fluorophore-doped hybrid xerogel polymeric light emitter and a multiple internal reflection configuration (MIR) optofluidic system in a photonic lab on a chip (PhLoC). Two different air mirrors at both sides of the emitter were implemented that improves light coupling into the MIR system. The MIR inner walls were bio-functionalized with a perox...

Farhood Ziaie Garnik Grigoryan Sayed Hossein Tohidi, Verzhine Sarkeziyan

Various concentrations of copper are embedded into silica matrix to xerogel form using copper source - Cu(NO3)2∙3H2O. The xerogel samples are prepared by hydrolysis and condensation of tetraethyl orthosilicate (TEOS) by the sol-gel method  and with determination of new molar ratio of components H2O/TEOS to be 6.2. In this investigation, the necess...

The xerogel samples were prepared by hydrolysis and condensation of tetraethyl orthosilicate (TEOS) by the sol-gel method. In this investigation, a new molar ratio of H2O/TEOS was determined to be 11.7. Also, the necessary amounts of tri-hydrated copper nitrate and penta-hydrated copper sulfate were added to the solution in such a manner that the concentration of the copper oxide in final solut...

Abstract The SiO2-LiBr hybrid porous materials were prepared by the sol-gel method. This process was obtained by the hydrolysis and condensation Tetraethyl orthosilicate (TEOS) with replacement of ethanol from alcogel by the drying at ambient temperature to obtain xerogel structure. The alcogel samples were synthesized from TEOS, EtOH, H2O, HCl, NH4OH and LiBr. The total molar ratio of the comp...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2013
vahidah homaunmir sayed hossein tohidi garnik grigoryan,

one distinct concentration of copper ions was embedded into the silica matrix to xerogel form using copper source cu(no3)2∙3h2o. the xerogel samples were prepared with using hydrolysis and condensation reactions of tetraethyl ortho-silicate (teos) by the sol-gel method. in this investigation, new molar ratio of h2o/teos was determined to be 11.7. also, the necessary amount of tri-hydrated coppe...

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