نتایج جستجو برای: phenyl modified nanosilica
تعداد نتایج: 275881 فیلتر نتایج به سال:
Abstract The photocatalytic process of phenol oxidation and Cr(VI) reduction in the presence nano-silica modified titania was carried out. activity composites tested using two different light sources. photocatalysts with 10% nanosilica showed highest activity. calcination temperature (200–800 o C) significantly determined sensitivity obtained materials to source used. Photocatalysts alternately...
A newly prepared iminocoumarin-functionalized magnetic nanosilica (Ni@SiO(2)-1) was found to form a selective stable complex with Cu(2+) over other metal ions. Quantification of Cu(2+) ions in aqueous solution using Ni@SiO(2)-1 is demonstrated through a fluorescent demetallization ensemble process.
Fibrous nanosilica (KCC-1) oxynitrides are promising solid-base catalysts. Paradoxically, when their nitrogen content increases, their catalytic activity decreases. This counterintuitive observation is explained here for the first time using (15) N-solid-state NMR spectroscopy enhanced by dynamic nuclear polarization.
An inductively coupled plasma torch (ICPT) system was used to synthesize nanosilica particles starting both from glass powders from fluorescent lamps and tetraethyl orthosilicate (TEOS) as precursors. The effect of the curtain gas on nanoparticles size, morphology and composition was studied by the use of BET, SEM and EDS analysis.
abstract self compacting concrete (scc) is a new construction material in the world. the aim of this research is to construct self compacting concrete with high compressive strength using combination of nano silica and micro silica. for this purpose, nano silica, micro silica, portland cement type 2, superplasticizer (sp), and gravel and sand have been used. three different groups of samples wi...
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