Mahboube Rabbani’s research while affiliated with Iran University of Science and Technology and other places

Supported diverse vanadium oxides catalysts with other expensive chemical reagents have been introduce high chemo-efficiency for a wide ambit of organic reactions such as hydrogenation or alcohol oxidation. Diminishing the use of such costly functionalized vanadium catalysts is currently one of the considerable topics in materials synthesizing. Herein, a new green method to prepare the V2O5-immobilized perlite nanocomposite (perlite/V2O5 NC) with sphere-shaped morphology in ethylene glycol under thermal conditions was described. Greenness of these processes was completely instituted, as perlite was used both as an ecofriendly and inexpensive material as well as an excellent surface for the growth of the nano-sphere of V2O5, due to electrostatic interactions between vanadium ions and the activated functional groups of alumina and silanol. Then, the application of desired product in the aerobic oxidation reactions of benzyl alcohol derivatives is precisely investigated. Under the optimized reaction conditions (1 mmol of H2O2, 0.02 of perlite/V2O5 NC, and 2.0 mL of acetonitrile) at 82 °C for 5 min, a major range of primary benzylic alcohols and their derivatives were efficiently converted to aldehydes with good yields (90%). All the structural analyses have carried out by using of X-ray diffraction powder (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) with scanning electron microscopy for elemental mapping (SEM-EDS) images, Fourier-transform infrared spectroscopy (FT-IR), inductively coupled plasma-optical emission spectrometry (ICP-OES) analysis and X-ray fluorescence spectrometer (XRF) and the obtained results have been carefully interpreted. Nitrogen sorption experiment has validated the formation of sphere-shaped with moderate Brunauer-Emmett-Teller (BET) method and the pore sizes of this nanocomposite has determined by (Barrett, Joyner, and Halenda(BJH method, as well. Reusability and stability of the perlite/V2O5 NC were verified by XRD, SEM images, EDS coupled with SEM-mapping images, FT-IR and (ICP-AS) analysis. Moreover, a plausible mechanism for facilitated oxidation of benzyl alcohols by perlite/V2O5 NC was suggested in this study.

Obviously, delivery of the medications to the brain is more difficult than other tissues due to the existence of a strong obstacle, which is called blood-brain barrier (BBB). Because of the lipophilic nature of this barrier, it would be a complex (and in many cases impossible) process to cross the medications with hydrophilic behavior from BBB and deliver them to the brain. Thus, novel intricate drug-carriers in nano scales have been recently developed and suitably applied for this purpose. One of the most important categories of these hydrophilic medications, are reactivators for acetyl cholinesterase (AChE) enzyme that facilitates the breakdown of acetylcholine (as a neurotransmitter). The AChE function is inhibited by organophosphorus (OP) nerve agents that are extremely used in military conflicts. In this review, the abilities of the nanosized drug delivery systems to perform as suitable vehicles for AChE reactivators are comprehensively discussed.

How to cite this article Kara G, Rabbani M. Experimental Study According to the increasing development of the mankind, social and technology activities in the earth, various industry is in a state of uncontrolled growth. In the present study, magnetite/nickel oxide mixed metal oxide nanoparticles (FNMMO NPs) were prepared by a simple method assisted by ultrasonic waves and applied as a novel adsorbent to dispose of dye wastewater. The morphology and chemical structures of the Fe 3 O 4 , NiO and FNMMO NPs were characterization by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), vibrating sample magnetometer (VSM), energy-dispersive X-ray spectroscopy (EDX), scanning electronic microscope (SEM) and transmission electron microscope (TEM). The adsorption of methylene blue (MB) onto FNMMO NPs was studied in relation to initial concentration of MB, contact time, adsorbent dose and pH value of solution. The equilibrium adsorption isotherm was fitted by Langmuir isotherm. The capacity of adsorption was evaluated 40.1 mg.g-1 and the time required to reach the adsorption equilibrium was 180 min.