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Preparation method for synthesizing MoS2/Fe3O4 nano composite material

A nanocomposite material, fe3o4 technology, applied in the direction of microsphere preparation, inorganic material magnetism, microcapsule preparation, etc., to achieve the effect of simple process, good crystallinity, and controllable shape and size

Inactive Publication Date: 2014-12-03
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Introducing magnetic oxides into the adsorbent to prepare a magnetic composite adsorbent, which can achieve rapid separation with an external magnetic field; Hu et al. synthesized monodisperse Fe 3 o 4 / SiO 2 As an adsorbent, it can effectively absorb Hg in water 2+ , Pb 2+ , and the adsorbent has good biocompatibility, Zhang et al. synthesized Fe by co-precipitation 3 o 4 , and then hydrothermally synthesized Fe 3 o 4 / C used as a solid phase extractant to enrich trace polycyclic aromatic hydrocarbons in water, MoS 2 As a new type of adsorption material, it has the characteristics of large specific surface area and large adsorption capacity. 2 Nanocomposites with special properties can be prepared by layer-by-layer self-assembly with magnetic nanoparticles. At present, MoS has not been prepared by hydrothermal method. 2 Coated Fe 3 o 4 Related reports on nanocomposites

Method used

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  • Preparation method for synthesizing MoS2/Fe3O4 nano composite material
  • Preparation method for synthesizing MoS2/Fe3O4 nano composite material
  • Preparation method for synthesizing MoS2/Fe3O4 nano composite material

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Effect test

Embodiment 1

[0025] (a) Preparation of nano-Fe 3 o 4 Particles: FeCl 3 ·6H 2 O was dissolved in 80mL of ethylene glycol to make a solution with a concentration of 0.1 mol / L, and stirred for 10 minutes. During the stirring process, trisodium citrate and anhydrous sodium acetate were added at a concentration of 0.15 mol / L and 0.6 mol / L, respectively. L, then pour the solution into a 100mL polytetrafluoroethylene reactor and put it in an oven. The reaction temperature is 200°C, and the reaction time is 8 hours. After the reaction is completed, the reactor is cooled to room temperature, and the upper layer solution in the reactor is poured into In the beaker, the Fe in the solution is 3 o 4 Adsorption deposition was carried out, and the obtained product was repeatedly washed with alcohol, and the product was dried at 60°C for 2 h to obtain Fe 3 o 4 nanoparticles, as a result figure 1 As shown, the product is spherical particles.

[0026] (b) Add 0.5g Fe 3 o 4 , 1.5g NaMoO 4 2H2O, 0....

Embodiment 2

[0028] 0.5g Fe 3 o 4 , 1g NaMoO 4 2H2 O, 0.4g NaCl, 0.25g CTAB, and 1.6g NaSCN were put into a 100ml reactor in turn, added 80ml of distilled water, stirred evenly, adjusted the pH of the reaction solution to 3, put the reactor into an oven, and reacted at 160°C After 36 hours, the obtained product was washed 2-3 times with distilled water and ethanol, and the sample was placed in an oven and dried at 60°C for 2 hours to obtain MoS 2 / Fe 3 o 4 Nanocomposite material, carry out scanning electron microscope to the product of this embodiment to observe its microscopic appearance, the result is as follows figure 2 As shown, the product consists of MoS 2 Nanoflowers and spherical Fe 3 o 4 Particle composition.

Embodiment 3

[0030] 1g Fe 3 o 4 , 1.8g NaMoO 4 Put 2H2O, 0.6g NaCl, 0.35g CTAB, 1.5g NaSCN into a 100ml reaction kettle in turn, add 80ml of distilled water, stir evenly, adjust the pH of the reaction solution to 4, put the reaction kettle into an oven, React for 24 hours. After the reaction is over, wash the obtained product with distilled water and ethanol 2-3 times, put the sample in an oven, and dry it at 60°C for 2 hours to obtain MoS 2 / Fe 3 o 4 Nanocomposite material, carry out scanning electron microscope to the product of this embodiment to observe its microscopic appearance, the result is as follows Figure 4 As shown, the product consists of MoS 2 flake and spherical Fe 3 o 4 Particle composition.

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Abstract

The invention provides a preparation method of a MoS2 / Fe3O4 nano composite material, belonging to the technical field of preparation of nano inorganic functional materials. The preparation method taking Fe3O4 nano particles as the raw material comprises the following specific steps of: dispersing the Fe3O4 nano particles in de-ionized water, adding sodium molybdate, sodium chloride, sodium thiocyanate and a surface active agent CTAB (Cetyltrimethyl Ammonium Bromide), after stirring for a period of time, adjusting pH by using hydrochloric acid, then, pouring the mixture into a stainless steel reaction kettle with a polytetrafluoroethylene liner, and naturally cooling after reacting at the pre-set temperature for a period of time; and centrifugally washing a reaction product by using the de-ionized water for several times, and drying the product to obtain the MoS2 / Fe3O4 nano composite material. The method disclosed by the invention has the advantages of being simple in process, rapid, high-efficiency and the like; MoS2 is well wrapped on the Fe3O4 nano particles; and the MoS2 / Fe3O4 nano composite material prepared by the invention is good in crystallinity, controllable in morphology and size and good in adsorption property.

Description

technical field [0001] The invention relates to the technical field of preparation of nano inorganic functional materials, in particular to a synthetic MoS 2 / Fe 3 o 4 Preparation methods of nanocomposites technical background [0002] Magnetic nanoparticles are a new type of nano-functional material with good biocompatibility and special magnetic functions. The application of magnetic materials in the environment is mainly for the adsorption of heavy metal ions and organic pollutants. The surface of magnetic nanoparticles is overloaded. The composite material obtained by oxidase not only has the advantages of magnetic nanoparticles, but also has the catalytic activity of enzyme, which can be used for biocatalysis and bioseparation. Multiple substances can be combined to form a variety of composite structures, which can endow the composite material with many characteristics and have a wide range of applications. . [0003] In recent years, a large number of studies have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/02H01F1/01
Inventor 唐华杨小飞李长生季晓瑞
Owner JIANGSU UNIV
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