نتایج جستجو برای: tio2 fe3o4 nanocomposite
تعداد نتایج: 40048 فیلتر نتایج به سال:
در این پژوهش نانوذرات آهن اکسید پوشانده شده با tio2 به عنوان کاتالیزور ناهمگن تهیه شد و در واکنش تک ظرفی تراکمی بایجینلی بتاکتواسترها یا بتا دی کتون ها، آلدهیدها و اوره یا تیواوره استفاده شدکه طی آن دی هیدروپیریمیدینون و دی هیدروپیریمیدین تیون ها در شرایط بدون حلال، در زمان مناسب و با بازده بالا تهیه شدند. ساختار محصولات با استفاده از نقطه ذوب و طیف ir مورد تایید قرارگرفت. در ادامه این پروژ...
In this research, the magnetic Fe3O4/zeolite NaA nanocomposite (Fe3O4/ZA), Fe3O4 nanoparticles, and zeolite have been synthesized by facile hydrothermal methods for adsorption removal of methylene blue from aqueous solution. The as-synthesized Fe3O4/ZA was characterized X-ray diffraction (XRD), MicroRaman analysis, Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SE...
In the present study, ultrasound-assisted Fe3O4@TiO2 magnetic nanocomposite was employed to catalytic oxidation of 2,4-Dinitrophenol. The catalyst features were characterised by SEM, TEM, XRD, BET, FTIR, VSM, DLS and TGA techniques. effect operational parameters i.e. pH, amount, 2,4-Dinitrophenol concentration ultrasound power on DNP removal examined optimised in terms sono-catalytic degradatio...
Introduction: The natural derived biopolymers are highly interested in recent years. These polymers are considering as the alternative for un-biodegradable plastic films. This is due to the low cost and their availability from biodegradable and renewable sources. In this study, the effect of different concentrations of Tio2 nanoparticles on physicochemical and microbiological characteristics of...
Background & Objectives: Ceftriaxone is an antibiotic which is extensively used to treat a number of various infections. It is mainly accumulated in water and sewage resulting in the environmental and health problems. This study is centered on the evaluation of the efficiency of a photocatalytic process using Fe3O4@SiO2@TiO2 in the removal of ceftriaxone from aqueous solutions. Methods: This r...
Background & Aim: Antibiotics are stable compounds with low biodegradability that are generally not removable by conventional wastewater treatment processes. The aim of this study was to investigate the ability of Fe-doped TiO2@Fe3O4 magnetic nanoparticles in the presence of ultraviolet irradiation to photocatalytic removal of ciprofloxacin from aqueous solutions. Methods: The sol-gel method ...
Sintesis nanokomposit Fe3O4/TiO2 sebagai fotokatalis yang dapat diambil kembali dalam fotoreduksi limbah ion Ag(I) telah dilakukan. diawali dengan sintesis magnetit (Fe3O4) melalui kopresipitasi dan sonikasi. Pelapisan TiO2 dilakukan proses sol-gel penambahan benih atau seed degusa, diikuti perlakuan termal pada suhu 500 °C. Hasil dikarakterisasi fourier transform infrared spectroscopy (FTIR), ...
A Fe3O4@ZnO/C nanocomposite with a core-shell structure was synthesized using the co-precipitation method. To prevent aggregation of Fe3O4 magnetic particles, polyethylene glycol (PEG) added. The X-ray diffractometer (XRD) results confirmed formation and ZnO phases, having cubic crystal system hexagonal system. Carbon in had no effect on Fe3O4@ZnO. Images from transmission electron microscopy (...
Functionally graded epoxy composites with various concentration profiles of Fe3O4@TiO2 core–shell nanoparticles (NPs) were synthetized and characterized, with focus on their antibacterial properties. The NPs consisted of rutile, anatase, magnetite and hematite. Graded composites were produced starting with homogeneous 2 vol% to 12 vol% NPs suspensions using a magnetophorese process, leading to ...
Tunable spectrum-response is desired for efficient photo-energy transformation. Blu-ray (~405 nm) and polarization sensitive Ag/TiO2 nanocomposite films are thus fascinating in application of fast-response and high-density optical memory device. The Ag/TiO2 film has the ability of replicating hologram based on optical coherence by laser-stimulated dissolution of Ag nanoparticles (NPs). The rate...
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