نتایج جستجو برای: nanopowders sol gel
تعداد نتایج: 111356 فیلتر نتایج به سال:
Rare earth (Yb3+, Ho3+, Tm3+) yttrium disilicate phosphors were produced by sol-gel technique and heated at 1050 °C temperature. The sizes of the vary between 20-30 nm according to images obtained from Transmission Electron Microscope. up-conversion (UC) emissions nanopowders measured in range 500–900 wavelength under 950 laser excitation. A linear increase with power was observed emission inte...
Zeolite Na-A supported ZnO nanocomposites (ZnO/Zeolite NCs) were synthesized at low temperature (70 °C) via the sol-gel process and characterized for thermal, structural, morphological, adsorption, optical bonding properties. Both XRD microscopy imaging results indicated that obtained nanopowders crystalline in nature with no structural collapse revealed. The nanoparticles occurred mainly on su...
تهیه، مشخصهیابی و ارزیابی مقایسهای زیست فعالی سه نوع نانو پودر شیشه زیست فعال برای کاربردهای پزشکی
Fabrication of biomaterials with ability to form a bond with bone tissue for bone skeletal system repair is one of the biomaterial science aims. Bioactive glasses containing CaO-SiO2-P2O5 are among the most important groups used in biomedicine and dentistry such as bone defect repair and maxillo-facial reconstruction. The aim of this work was preparation and characterization of nano particle b...
food safety is considered as an important world concern. the detection of pathogen and toxic materials in food has an important role in public health care. in recent years, the applications of microbial biosensor have been developed as a new approach for toxicity control. luminescent microbial biosensor is an appropriate biological tool for protection of natural environment. this type of biosen...
Mg0.5-xCoxZnFe2O4 ferrite nanostructures with various amounts of Co2+ substitution (x= 0, 0.05, 0.10, 0.15) were prepared using a simple and inexpensive sol-gel method sol-gel route. Structural, microstructural and magnetic properties of the prepared powders were investigated by x-ray diffraction (XRD), Fourier transform infrared (FT-IR), field emission- scanning electron microscopy (FE-SEM), X...
In this research, a novel thin film Si-GO10 and nanopowders Si-GO30 of silica-graphene oxide (GO) composite were prepared via the sol–gel method deposited on glass substrates using spray pyrolysis. X-ray diffraction (XRD) results showed relatively strong peak in graphite layer that corresponds to (002) plane. Transmission electron microscope (TEM) images SiO 2 nanoparticles randomly distributed...
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