M. A. Rezvani
University of Zanjan
[ 1 ] - Nano composite mixed-addenda vanadium substituted polyoxometalate-TiO2 as a green, reusable and efficient catalyst for rapid and efficient synthesis of symmetric disulfides under ultrasound irradiation
Mixed-addenda vanadium substituted polyoxometalate supported on anatase TiO2 crushed nano leaf was synthesized by an unusual reaction with titanium tetraisopropoxide at 100 ºC via sol–gel method under oil-bath condition. The materials characterized by XRD, TEM, IR and UV–vis techniques. In the present work, efficient oxidative of thiols with polyoxometalate-TiO2/hydrogen peroxide ...
[ 2 ] - A comparative study between transition-metal-substituted Keggin-type tungstosilicates supported on anatase leaf as catalyst for synthesis of symmetrical disulfides
Transition-metal-substituted (TMS) polyoxometalates of the general formula [SiW9M3O39], (where M = first row transition metal), has been synthesized and supported on anatase by sol–gel method under oil-bath condition. The tetrabutylammonium (TBA) salts of the Keggin-type polyoxotungstates [SiW9M3O39], (M = VII, CrII, MnII, FeII CoII and NiII), proved to be green, reusable, and ...
[ 3 ] - Investigation of Structural and Optoelectronic Properties of Sc2O3 Nanoclusters: A DFT Study
In this manuscript, density functional theory was used to explore structural, vibrational and optical properties of the (Sc2O3)n (n=1-5) cluster systems using DFT/B3LYP/LanL2DZ level of computation. Different stable isomers were obtained and numerous chemical parameters such as HOMO-LUMO gap, ionization potential and electron affinity were calculated successfully. Stability of the clusters was ...
[ 4 ] - گوگردزدایی اکسیداسیونی بنزین با استفاده از نانوکامپوزیت آلی-معدنی جدید (TBA)4PW11Fe@PVA به‌عنوان یک نانوکاتالیزور کارامد و تکرارپذیر
در این تحقیق به منظور تهیه سوخت پاک، نانوکامپوزیت هیبریدی آلی-معدنی جدید (TBA)4PW11Fe@PVA به روش سل-ژل ساخته شد و به عنوان یک نانو کاتالیزور کارامد در فرایند گوگردزدایی اکسیداسیونی بنزین مورد استفاده قرار گرفت. این نانو کامپوزیت از واکنش پلی اکسومتالات کگینی استخلاف دار [N(CH3)4]4PW11FeO39 با پلی وینیل الکل (PVA) بدست می آید. ساختار این نانوکامپوزیت با استفاده از روشهای تشخیصیFT-IR ،XRD ، UV-Vi...
[ 5 ] - Synthesis and characterization of TBA-PV2Mo10@PVA as an efficient and reusable heterogeneous catalyst for oxidative desulfurization of gasoline
To prepare ultra-clean gasoline fuel, a new nanocomposite TBA-PV2Mo10@PVA was introduced as an efficient and green catalyst for oxidative desulfurization (ODS) process. The nanocomposite was successfully prepared by reaction of tetrabutylammonium bromide (TBA), H5PMo10V2O40, and poly vinyl alcohol (PVA) at room temperature via sol–gel method under oil-bath condition. The synthesized TBA-PV2Mo10...
[ 6 ] - گوگردزدایی اکسایشی بنزین با استفاده از نانوکامپوزیت نوین TBA-FePOM@NiOبه‌عنوان یک کاتالیست مؤثر و تکرارپذیر
در این پژوهش به منظور تهیه سوخت پاک، نانوکامپوزیت جدید TBA-FePOM@NiO به روش سل ـ ژل سنتز شده و به عنوان یک کاتالیست در فرایند گوگردزدایی اکسایشی بنزین مورد استفاده قرار گرفت. این نانو کامپوزیت با واکنش پلی اکسومتالات استخلاف دار شده [N(CH3)4]4PW11FeO39 (به صورت TBA-FePOM نمایش داده خواهد شد)، با نانوذره NiO به دست می آید. ساختار نانوکا...
[ 7 ] - Efficient removal of cobalt(II) ion from aqueous solution using amide-functionalized metal-organic framework
In this study, an amide-functionalized metal-organic framework, namely TMU-24 was selected to adsorb Co(II) from wastewater with an adsorption capacity of 500 mg. g-1 in less than 20 minutes in neutral pH (pH=7). The effect of diverse parameters such as adsorbent dosage, competitive ions, and contact time on the adsorption process was investigated to find the optimal amounts of them. Also, the ...
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