نتایج جستجو برای: xrd patterns

تعداد نتایج: 435420  

M. Ghomi Gilvaee M. R. Khanlary, S. Ghammamy

In this research Calcium fluoride nanoparticles and its different amount of cerium ion dopant (5%and 10%) were prepared. The mentioned nanoparticle were studied by fourier transform infrared spectroscopy (FTIR) , X-ray diffraction (XRD), absorption and photoluminescence spectra (PL) and Scanning electron microscopy (SEM). The XRD patterns indicate a typical cubic fluorite structure and no other...

In this research graphene oxide was synthesized by two methods. These methods were achieved by changing the improved Hummers’ and modified Hummers’ methods. Structure of graphene oxide was characterized by scanning electron microscopy (SEM) images, X-ray diffraction (XRD) patterns, Raman spectroscopy and Fourier transform infrared (FTIR) spectra. According to SEM image, the thickness of graphen...

2006
Hongping He Ray L. Frost Thor Bostrom Peng Yuan Dan Yang Yunfei Xi Theo Kloprogge

(2006) Changes in the morphology of organoclays with HDTMA+ surfactant loading. Abstract The detailed understanding of the interlayer structure of organoclays is of importance in the design of organoclay based materials and their industrial applications. In this study, Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD) have been used to provid...

Journal: :Biophysical journal 2003
Carlo Meneghini Maria Chiara Dalconi Stefania Nuzzo Settimio Mobilio Rudy H Wenk

Bioapatite, the main constituent of mineralized tissue in mammalian bones, is a calcium-phosphate-based mineral that is similar in structure and composition to hydroxyapatite. In this work, the crystallographic structure of bioapatite in human fetuses was investigated by synchrotron radiation x-ray diffraction (XRD) and microdiffraction ( micro -XRD) techniques. Rietveld refinement analyses of ...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2008
layla abadian azim malekzadeh abbas ali khodadadi yadollah mortazavi

catalysts with the formula of laco(1+x)o(3+δ), where 0 ≤ x ≤ 1, were studied for oxidation of co and c2h6 in a synthetic exhaust gas, comprising 6.0 % co and 0.2 % c2h6 in ar. ethane was selected as a model for hydrocarbons in the exhaust gas. the performance of catalysts is correlated to their properties, particularly their redox in oxidizing and reducing atmospheres. xrd patterns show perovsk...

Journal: :علوم و تکنولوژی پلیمر 0
غلام باقری مرندی تهران، دانشگاه تهران، پردیس کشاورزی و منابع طبیعی زهره پیوند کرمانی کرج، دانشگاه آزاد اسلامی مهران کردتبار کرج، دانشگاه آزاد اسلامی

novel collagen-based hydrogel nanocomposites were synthesized by graft copolymerization of acrylamide and maleic anhydrid in the presence of different amounts of montmorillonite, using methylenebisacrylamide (mba)and ammonium persulfate (aps) as crosslinker and initiator, respectively. the optimum amount of clay on the swelling properties of the samples was studied. it was found that the hydrog...

Journal: :international journal of nanoscience and nanotechnology 2015
m. mirzaei h. ahadi m. shariaty-niassar m. akbari

in this research fe-tio2 nanocomposites with different molar ratios of fe/ti were prepared as nano-photocatalyst using a modified sol-gel process at ambient temperature. crystallographic properties of nanocomposites were characterized by x-ray diffraction (xrd). surface morphology and mean particle size of nanocomposites were specified by field emission scanning electron microscopy (fesem) and ...

Journal: :international journal of nano dimension 0
a. hassanvand separation processes research group (sprg), department of engineering, university of kashan, kashan, iran. m. asghari separation processes research group (sprg), department of engineering, university of kashan, kashan, iran. h. halakoei energy research institute, university of kashan, kashan, iran. b. rajaei energy research institute, university of kashan, kashan, iran.

nano-zeolite coapo-5 as a member of afi family, was synthesized via a hydrothermal treatment, and structurally characterized using x-ray diffraction (xrd), scanning electron microscope (sem), and energy dispersive x-ray analysis (edax). the effects of crystallization temperature and time on the structure of these powder products were studied. xrd patterns of the synthesized powders revealed a h...

Journal: :Journal of Physical Chemistry C 2023

Manual analysis of XRD data is usually laborious and time consuming. The deep neural network (DNN) based models trained by synthetic patterns are proved to be an automatic, accurate, high throughput method common collected from solid sample in ambient environment. However, it remains unknown that whether capable solve u-XRD mapping for in-situ experiments involving liquid phase exhibiting lower...

Journal: :nanochemistry research 1999
mojtaba amini mahdi ashrafi

nanoparticles of the zno and tio2 were synthesized and the physicochemical properties of the compounds were characterized by ir, x-ray diffraction (xrd), scanning electron microscopy (sem) and transmission electron microscopy (tem). the xrd patterns of the zno and tio2 nanoparticles could be indexed to hexagonal and rutile phase, respectively. aggregated nanoparticles of zno and tio2 with spher...

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