ISSN: 1813-0410

Keywords : XRD

Evaluation diffusion-controlled release of organic species through the LDHs particles based on synthesized and characterized of Mg/Al-Rifampicin- layered double hydroxide nanohybrid .

A. M. Bashi; S.M. Hadawi; Salam .H .Abdullah

journal of kerbala university, 2012, Volume 8, Issue 4, Pages 62-79

Synthesis of Mg/Al- layered double hydroxides intercalated with rifampicin drug . To obtaining nanohybrid compounds. The method of ion exchange was used with different molar ratio Mg/Al=2,3,4,5, the resulted material was characterized by Fourier transform infrared spectra (FT – IR) ,XRD (X-ray diffraction) the release profiles of the guest anion to phosphate ,sulphate aqueous media, the accumulated release in to phosphate more than sulphate. Release kinetics of Rifampicin has been evaluated with various models such as zeroth order, first order and pseudo- second order as well as Bhaskar equation. It is observed that the release profiles of Rifampicin were governed by pseudo second order. Additionally in this study, novel equations were used and applied for predicting the diffusion of guest anion through LDH nano hybrid particles and applied it for the Rifampicin. These equations were more suitable for diffusion than the previous equation like Bhaskar equation and it’s the most convenient.

Micro Raman scattering and structural investigation of nanocrystalline Nd:KTP

A. Cheraghi; A.S.H. Alattar; R. Malekfar

journal of kerbala university, 2012, Volume 8, Issue 3, Pages 79-82

In this work we report the synthesization process of nanocrstalline Nd:KTP powders by modified sol-gel method. The results of XRD studies indicate that KTP nanocrystallines doped by Nd has orthorhombic phase. By using micro Raman back scattering and FT-IR transmission spectroscopies, the lattice modes of the synthesized nanocrystalline products have been investigated. The structural and the grain sizes determination for the synthesized samples were measured using the XRD patterns and the Debye-Scherrer formula. These data are in close agreement with the grain sizes determined by the SEM slides. It can be claimed that XRD analysis and micro Raman backscattering spectroscopy are suitable methods to study the quality of nanocrystalline materials including KTP family

Preparation and evaluation of the efficiency of nano composite thin film for the production of hydrogen gas

Haleemah J. Mohammed; Kassim M. Sahan; H. Jawadm; Basher; Roaa Sh. Mahmood

journal of kerbala university, 2012, Volume 8, Issue 3, Pages 68-78

In this research had been studied the preparation and the study of the efficiency of Composites nano thin film for the production of electrodes used in the production of hydrogen gas through the Electrolysis cell consists of these Anode nano )Co: Mn, Wo3) either electrode cathode nano (NI. Cr .MO) In the water electrolysis process the hydrogen is produced by electrochemical splitting water molecules (H2O) into their constituent hydrogen (H2) and oxygen (O2). this thin films was prepared on glass substrates, also Aluminum oxide by using deposition . ..structured characteristics was studied through the analysis of X-ray diffraction (XRD) of the prepared film for determining the yielding phase which are to set the with standard tables . Also, the sample was tested atomic force microscope to identify the roughness of prepared films surface and the study of the efficiency of this cell to the electrode material, the distance between the electrodes, And has been the study of the volume of gas output ,voltages with change time and current.