Synthesis of superparamagnetic iron oxide nanoparticles in carbon reduction method

Abstract

Owing to the superparamagnetic iron oxide nanoparticles' wide applications, a new approach in the synthesis of mainly superparamagnetic iron oxide nanoparticles is reported. The Fe 3 O 4 nanoparticles (∼500 nm) were synthesised through the carbon reduction method, which is a brand new method. The best parameters of synthesis of the nanoparticles are fixed through characterising by transmission electron microscope (TEM), X-ray diffraction and a vibrating sample magnetometer of the Fe 3 O 4 nanoparticles obtained under different experimental conditions. The TEM characterisation results show that the best ratio of the carbon and ferric chloride is 3:1 and the most suitable heating time is 3 h. The nanoparticles, which were obtained with furnace cooling under vacuum condition after 3 h heating, have the best magnetic properties and most stable crystal from. The characterisations of SiO 2 protected nanoparticles demonstrate that the component of the nanoparticles is Fe 3 O 4. The UV-vis absorption spectrum of the Fe 3 O 4 nanoparticles demonstrates wide-range light absorption of the Fe 3 O 4 nanoparticles. Moreover, quantitative analysis of this new method is conducted to confirm repeatability. The actual qualities of the Fe 3 O 4 nanoparticles are always consistent with the theoretical ones, which indicate that the repeatability of this method is excellent.

Preparation Method of Co3O4 Nanoparticles Using Degreasing Cotton and Their Electrochemical Performances in Supercapacitors

“…Their electrochemical capacitance behavior with high capacitance and durable cycle life in 6 M KOH solution was also discussed. Encouragingly, superparamagnetic Fe 3 O 4 was also successfully fabricated via the same method as reported in our previous paper [23].…”

Photocatalytic Property of Fe3O4/SiO2/TiO2 Core‐Shell Nanoparticle with Different Functional Layer Thicknesses

“…The Fe 3 O 4 magnetic particles were obtained using the carbon reduction method [13] and modified with SiO 2 . The Fe 3 O 4 particles were placed in a beaker with 100 mL of alcohol, to which 15 mL of TEOS was added after the temperature reached 50 ∘ C. Thereafter, 0.97 mL of hydrochloric acid and a small amount of deionized water were added into the collosol.…”

“…Given its high free hydroxy production, TiO 2 nanoparticles have been used in photocatalytic oxidation degradation [6][7][8][9][10][11] to obtain an effective optical spectrum, high chemical and biological inertness, nontoxicity, and low cost. Relevant studies have received considerable attention in recent years [11][12][13][14][15].…”

Adsorption of Methyl Orange on Magnetically Separable Mesoporous Titania Nanocomposite

“…Fe 3 O 4 nanoparticles were prepared by a novel method named carbon reduction method as reported in our previous paper [23]. Fe 3 O 4 particles and 100 ml of alcohol were put into a beaker in an oven.…”