نتایج جستجو برای: x ray diffraction and ftir

تعداد نتایج: 16938614  

D. DurgaVijaykarthik M. Kirithika N. Jeyakumaran, N. Prithivikumaran,

Cadmium Oxide (CdO) nanoparticles were prepared by precipitation method using Cadmium acetate and ammonia solution. Presence of chemical species, were verified by Fourier Transform Infra Red (FTIR) Spectrum. From X-Ray Diffraction (XRD) spectrum the particle size, d-spacing value and structure of the nanoparticle were analysed. Size of the nanoparticles and the elemental composition were detect...

Journal: :journal of nanostructures 2013
m. hosseyni sadr a. morsali sh. hojaghani

a new nano-sized cobalt(ii) coordination polymer, (col1).0.5dmf.1.5ch3oh(1); [h2l1 = 5-(4-carboxy phenyl azo) salicyilic acid] has been synthesized by a sonochemical method. the thermal stability of compound 1 was studied by thermo- gravimetric and differential thermal analyses. nano-structure of this coordination polymer was characterized by elemental analyses, ir spectroscopy,  powder x-ray d...

Journal: :The Journal of organic chemistry 2009
Nicoleta Toşa Attila Bende Richard Attila Varga Anamaria Terec Ioan Bratu Ion Grosu

The formation and high stability of the H-bond-driven supramolecular architectures of the syn and anti isomers of the dioxime of bicyclo[3.3.1]nonane-3,7-dione were investigated by single crystal X-ray diffraction, NMR, FTIR, and molecular modeling. Self-assembly of the achiral syn isomer into a cyclic trimer (supramolecular wheel) and of the chiral anti isomer into homochiral cyclic dimers was...

Journal: :Carbohydrate research 2005
Yongqin Zhang Changhu Xue Yong Xue Ruichang Gao Xiuli Zhang

A new method to determine the degree of deacetylation (DD) of alpha-chitin and chitosan in the range of 17-94% DD using X-ray powder diffraction (XRD) is proposed. The results were calibrated using (1)H NMR spectroscopy for chitosan and FTIR for chitin, in comparison with the potentiometric titration method. The results showed a good linear correlation between the CrI020 from XRD and the calibr...

Journal: :Molecules 2012
Reem K Farag Riham R Mohamed

Nanogels of a binary system of carboxymethyl chitosan (CMCh) and poly- (vinyl alcohol) PVA, were successfully synthesized by a novel in situ process. They were also characterized by various analytical tools like Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM) and X-ray diffraction (XRD). They were studied for their unique swelling properties in water and d...

Journal: :Chemical communications 2003
Nanguo Liu Roger A Assink C Jeffrey Brinker

Highly ordered mesoporous inorganic-organic hybrid thin films with covalently bonded carboxylic acid (-COOH) terminal groups on the pore surfaces were synthesized by evaporation induced self-assembly of tetraethoxysilane, organosilanes, and a nonionic surfactant followed by acid hydrolysis and characterized using transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform...

2001
Hongbin Li Xi Zhang Ruifeng Zhang Jiacong Shen Bing Zhao Weiqing Xu

The thermotropic liquid crystalline behavior of a new kind of amphiphilic polymer without mesogens is reported. The existence and structure for the polymeric mesophase are confirmed and characterized by DSC, X-ray diffraction, optical polarized microscopy, and temperature-dependent FTIR. Due to strong interactions between pendent long alkyl chains, we conclude that some hydrophobic semirigid ro...

2016

Submit Manuscript | http://medcraveonline.com Abbreviations: PLGA: Poly Lactic-Co-Glycolic Acid; PEG: Polyethylene Glycol; FDA: Food and Drug Administration; AlgPLGANP: Alginate-PLGA Nanoparticle; PDI: Polydispersity Index; TRF: Tocotrienol Rich Fraction; FA: Folic Acid; α: Alpha; ZP: Zeta Potential; SEM: Scanning Electron Microscopy; PXRD: Powder X ray Diffraction; DSC: Differential Scanning C...

D. DurgaVijaykarthik M. Kirithika N. Jeyakumaran, N. Prithivikumaran,

Cadmium Oxide (CdO) nanoparticles were prepared by precipitation method using Cadmium acetate and ammonia solution. Presence of chemical species, were verified by Fourier Transform Infra Red (FTIR) Spectrum. From X-Ray Diffraction (XRD) spectrum the particle size, d-spacing value and structure of the nanoparticle were analysed. Size of the nanoparticles and the elemental composition were detect...

2016
K. Abbas R. Ahmad I. A. Khan S. Saleem U. Ikhlaq

Nitriding of p-type Si samples by pulsed DC glow discharge is carried out for different Ar concentrations (30% to 90%) in nitrogen-argon plasma whereas the other parameters like pressure (2 mbar), treatment time (4 hr) and power (175 W) are kept constant. The phase identification, crystal structure, crystallinity, chemical composition, surface morphology and topography of the nitrided layer are...

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