نتایج جستجو برای: cofe2o4 nanoparticle
تعداد نتایج: 31564 فیلتر نتایج به سال:
In this work, carbon submicron fiber composites loaded with a cobalt-ferric alloy and binary metal compounds were prepared by electrospinning high temperature annealing using acetone ferric as precursors polyacrylonitrile source. The phase transformation mechanism of the fiber-supported Co-Fe bimetallic compound during was investigated. electrochemical properties oxide self-supported electrode ...
در این تحقیق نانوذرات هسته-پوسته cofe2o4@c طی دو مرحله فرآیند شیمیایی سنتز گردیدند. در مرحله ی اول نانوذرات cofe2o4 با روش میکروامولسیون و با استفاده از سیستم میسل معکوس شبه چهارتایی آب/ایزواکتان/بوتانول/ستیل تری متیل آمونیوم برومید(ctab) سنتز گردیدند. سنتز در دو شرایط مختلف نسبت مولی آب به عامل اصلاح کننده سطحی 8 و 10 انجام شد. مرحله دوم مربوط به سنتز پوسته کربنی بود که با کمک روش نشانش شیمیای...
بررسی کارایی CoFe2O4 با پایه گرافن در فعال سازی پراکسی مونوسولفات و حذف آموکسی سیلین از محیط های آبی
Background and purpose: Nowadays, amoxicillin is one of the most important and most frequently used antibiotics that has received especial attention as it causes resistance in bacteria. This compound enters the aquatic environment through different routes including sewage and waste disposal of medical centers, veterinary centers and industries. The aim of this study was to evaluate the performa...
In this research work cobalt-ferrite (CoFe2O4) nanoparticles were synthesized by a simple, general sol-gel auto-combustion method. For this study, electromagnetic (EM) wave absorbing coatings with different weight fractions of nano-carbon and CoFe2O4 (which, arises from both dielectric and magnetic contributions) and polymeric epoxy resin were prepared and their characteristics were fully inves...
Synthesis, structure, and magnetic studies on self-assembled BiFeO3–CoFe2O4 nanocomposite thin films
BiFeO3–CoFe2O4 nanocomposite thin films R. Muralidharan, N. Dix, V. Skumryev, M. Varela, F. Sánchez, and J. Fontcuberta Institut de Ciència de Materials de Barcelona-CSIC, Campus UAB, Bellaterra 08193, Spain Institut Català de Recerca i Estudis Avançats (ICREA), Barcelona, Spain Departament de Física Aplicada i Òptica and Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelon...
In this investigation, the effect of heat treatment on magnetic properties of glass and nano-structured cobalt-ferrite glass-ceramic was studied. The glass was synthesized in the system of Na2O-Fe2O3-CoO-B2O3-SiO2. Based on DTA results, heat treatment was done at different times and temperatures. X-ray diffraction pattern of glass-ceramic showed the crystallization of CoFe2O4 and some nonmagnet...
Cobalt ferrite (CoFe2O4) nanoparticles were synthesized and investigated as a catalyst in the reaction of nitrous oxide (N2O) decomposition. was by solid–phase interaction at 1100 °C preliminary mechanochemical activation roller-ring vibrating mill 400 °C. The characterized X-ray diffraction (XRD), synchronous thermal analysis (TG DSC) scanning electron microscopy (SEM). A low-temperature nitro...
During the past few decades, hybrid nanoparticles (HNPs) based on a magnetic material and gold have attracted interest for applications in catalysis, diagnostics nanomedicine. In this paper, CoFe2O4/Au HNPs with an average particle size of 20 nm, decorated 2 nm clusters, were prepared using methionine as reducer anchor between CoFe2O4 gold. The was used to grow Au clusters solid shell (up 10 de...
In this study, a pH-responsive magnetic drug delivery system was prepared by cross-linking of Cofe2O4/graphene oxide to carboxymethyl cellulose (CMC) biopolymer with adipic acid dihydrazide (ADH) and then investigated for loading release poorly water-soluble anti-cancer drug, curcumin (CUR). The CoFe2O4/GO-ADH-CMC bio-nanocomposite characterized FE–SEM/EDX, TEM, FT–IR, XRD, TGA, VSM, zeta-poten...
Cobalt ferrite (CoFe2O4) is an interesting material due to its rich physical properties. In order study the influence of synthetic methods on crystalline and morphological structure, optical magnetic properties CoFe2O4, we synthesized here CoFe2O4 by three different methods, including chemical co-precipitation method, sol-gel ceramic method. The resulting powders were characterized analyses: XR...
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