in this work, tio2 /sio2 (pure anatase), and tio2 /sio2 (anatase/rutile) nano-photocatalysts are prepared by using sol-gel method and control of acidity. the particles size is calculated using scheerer, s equation and is estimated to be around 7-15 nm. in order to improve the photocatalytic activity of tio2 /sio2 ,1% (wt) platinum particles are loaded on both catalysts using photoreductive meth...

nano tio2 supported on sio2 (nano tio2@sio2) as a solid lewis acid, was described to be an effective and reusable catalyst for one-pot three-component reaction of benzil, aryl aldehydes and ammonium acetate for the synthesis 2-aryl-4,5-diphenyl-1h-imdazoles synthesis. to explore the high efficacy of the catalytic system the four-component cyclization of benzil, aryl aldehydes, ammonium acetate ...

Although jute fiber-reinforced PLA composites show strong application prospects, their low mechanical properties limit applications to some extent. In this paper, nano-SiO2 particles as well nano SiO2 modified by coupling agents which can efficiently improve the strength and toughness of composite materials are introduced into matrix. The bending, stretching thermal designed jute/PLA nonwoven w...

The purpose of this in vivo study was to evaluate and compare the dentin–pulp complex response following occlusal cervical restorations rat molars restored with nano-hydroxyapatite silica glass ionomer cement (nano-HA-SiO2-GIC) conventional (c-GIC). In total, 64 maxillary first 32 male Wistar rats were using Fuji IX (c-GIC) nano-HA-SiO2-GIC a split-mouth design. Half them reserved for type rest...

Crystalline stanous chloride dihydrate (SCD), more descriptively named dichloroaquatin(II) monohy­ drate SnCl2(OH2) • H20 [1, 2], is not a very stable compound. The vapour pressure of its crystal water is appreciable already at room temperature. If the com­ pound is stored in a dry atmosphere or under vacuum it quickly loses water and becomes highly reactive at its surface. One of the usual met...

Nano-scale patterns were produced with UV-curable acrylated hyperbranched polymer nanocomposites using nanoimprint lithography with a glass master in a rapid, low-pressure process. The pattern of the glass master was replicated with composites containing up to 25 vol% SiO2 with a shape fidelity better than 98%. Photo-rheology, interferometry and atomic force microscopy were used to analyze them...

ZnO/SiO2 was prepared using sol-gel method, and vanadium particles were loaded on this nano-photocatalyst by wet incipient method. They characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive (EDX) analysis andFouriertransform infrared spectroscopy (FT-IR). The XRD patterns showed that the zinc oxide samples have a wurtzite structure and vanadium dope...

Dimensional measurements on nano-objects by atomic force microscopy (AFM) require samples of safely fixed and well individualized particles with a suitable surface-specific particle number on flat and clean substrates. Several known and proven particle preparation methods, i.e., membrane filtration, drying, rinsing, dip coating as well as electrostatic and thermal precipitation, were performed ...