Nanoadditives SiO2 and TiO2 in Process Fluids

Influence of SiO2 and TiO2 dielectric layers

We have studied the influence of SiO2 and TiO2 dielectric layers on the atomic intermixing of InxGa1−xAs/InP quantum well structures using the impurity-free vacancy disordering technique. Photoluminescence results revealed that an enhancement of interdiffusion was obtained when the samples were capped with SiO2. Although TiO2 layers were able to suppress the interdiffusion in the InGaAs/InP sys...

Synthesis and characterization of maleimide-functionalized polystyrene-SiO2/TiO2 hybrid nanocomposites by sol–gel process

Maleimide-functionalized polystyrene (PSMA-SiO2/TiO2) hybrid nanocomposites were prepared by sol-gel reaction starting from tratraethoxysilane (TEOS) and titanium isopropoxide in the solution of polystyrene maleimide in 1,4-dioxane. The hybrid films were obtained by the hydrolysis and polycondensation of TEOS and titanium isopropoxide in maleimide-functionalized polystyrene solution followed by...

Phase segregation in binary SiO2/TiO2 and SiO2/Fe2O3 nanoparticle aerosols formed in a premixed flame

Binary SiO2/TiO2 and SiO2/Fe2O3 nanoparticle (diameter < 100 nm) aerosols of varying mole ratios of Ti or Fe to Si were generated in a premixed Bunsen-type aerosol flame reactor. The distribution of species within the particles was investigated using transmission electron microscopy, electron energy loss spectrometry, x-ray diffraction, and Fourier transform infrared spectroscopy. Phase segrega...

Removal of VOCs by photocatalysis process using adsorption enhanced TiO2–SiO2 catalyst

Removal of VOCs by photocatalysis process using adsorption enhanced TiO2–SiO2 catalyst Linda Zou a,∗, Yonggang Luo b, Martin Hooper c, Eric Hu b a Institute of Sustainability and Innovation, Victoria University, P.O. Box 14428, Melbourne, Vic. 8001, Australia b School of Engineering and Technology, Deakin University, Geelong, Vic. 3217, Australia c Gippsland Centre for Environmental Science, Mo...

SAXS- and ASAXS-investigation of TiO2-SiO2 gels