Azarbaijan Shahid Madani University

About: Azarbaijan Shahid Madani University is a education organization based out in Tabriz, Iran. It is known for research contribution in the topics: Graphene & Nanocomposite. The organization has 1477 authors who have published 3186 publications receiving 30278 citations. The organization is also known as: Azarbaijan University.

A pH-responsive and magnetic Fe3O4@silica@MIL-100(Fe)/β-CD nanocomposite as a drug nanocarrier: loading and release study of cephalexin

Abstract: In the present work, a novel magnetic and pH-responsive porous nanocomposite was prepared by the surface grafting of β-cyclodextrin onto Fe3O4@silica@MIL-100(Fe). The effect of pH and temperature on the adsorption of cephalexin and release behavior of the developed nanocomposite was studied. It was found that the maximum adsorption occurs at room temperature while fast release occurs at higher temperature. Among different two-parameter isotherm models, the results showed that the adsorption of the drug was well described by the Langmuir isotherm model. Different kinetic models including film-transfer, intra-particle diffusion, and pseudo-second order kinetic models were used to investigate the mechanism of adsorption. Thermodynamic studies indicated that the adsorption of cephalexin onto the nanocomposite was exothermic and spontaneous. In addition, the nanocomposite showed sensitive pH-dependent behavior. Finally, mathematical kinetic models such as zero-order, first-order, Korsmeyer-Peppas and Higuchi were studied to investigate the drug release profile where the kinetics of release were well described by the Higuchi model.

Efficiency of grey wolf optimization algorithm for damage detection of skeletal structures via expanded mode shapes

Abstract: Vibration-based structural damage identification through optimization techniques has become an interesting research topic in recent years. Dynamic characteristics such as frequencies and mode shape...

Zn–Fe-layered double hydroxide intercalated with vanadate and molybdate anions for electrocatalytic water oxidation

Abstract: In this study, vanadate and molybdate anions were intercalated into Zn–Fe layered double hydroxides (LDHs) by co-precipitation methods to obtain VO4-LDH and MoO4–LDH nanohybrids Powder X-ray diffraction (XRD), Fourier transform infrared spectra (FT-IR), transmission electron microscopy (TEM), and X-ray energy dispersive spectroscopy (EDS) indicate the successful intercalation of vanadate and molybdate anions According to the results obtained from TEM and XRD, LDHs have a size in the nanometer scale with a plate-like morphology and high crystalline quality Moreover, the LDHs were used as an efficient electrocatalyst material for water oxidation in alkali solution In electrochemical water splitting, Zn–Fe–VO4 shows a superior OER performance compared to the bare glassy carbon electrode Zn–Fe–VO4-LDH exhibits good OER activity, which is expressed as a low onset overpotential, small Tafel slope, and large exchange current density At the overpotential of 046 (V vs SCE), the current density of the Zn–Fe–VO4-LDH nanosheets is about 18843 mA cm−2, which is much higher than that of the Zn–Fe–MoO4–LDH and Zn–Fe–NO3–LDH nanoparticles