Method for preparing porous zinc ferrite nano-rods

A technology of nanorods and zinc ferrite, applied in chemical instruments and methods, zinc compounds, iron compounds, etc., can solve the problems that no one has publicly reported the preparation of one-dimensional zinc ferrite porous nanostructures, and achieve good crystallization and uniform dispersion Effect

Inactive Publication Date: 2008-10-22
ZHEJIANG SCI-TECH UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

So far, no one has publicly reported the preparation

Method used

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  • Method for preparing porous zinc ferrite nano-rods
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  • Method for preparing porous zinc ferrite nano-rods

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Embodiment 1

[0020] First, 0.583 g (1.6 mmol) of cetyltrimethyl bromide, 24.145 g (0.287 mole) of cyclohexane and 0.846 g (9.6 mmol) of n-pentanol were dissolved in 48 ml of deionized water, and after stirring A microemulsion system is obtained. Among them, the molar concentration of cetyl trimethyl bromide is 0.02 mol / liter, the molar ratio of deionized water to cetyl trimethyl bromide is 30, and the molar ratio of n-amyl alcohol to cetyl trimethyl bromide is for 8. Then 8 milliliters of oxalic acid with a molar concentration of 0.2 mol / liter, 8 milliliters of a molar concentration of 0.02 mol / liter of zinc nitrate solution and 16 milliliters of a molar concentration of 0.02 mol / liter of ferrous chloride solution were poured into the above microemulsion , that is, the molar ratio of oxalic acid and zinc salt in the microemulsion is 10, and the molar ratio of zinc salt and ferrous salt is 1:2. Stir for 2 hours. ZnFe was obtained after centrifugation and drying 2 (C 2 o 4 ) 3 Nanorod...

Embodiment 2

[0022] First, 0.875 g (2.4 mmol) of cetyltrimethyl bromide, 8.138 g (96.7 mmol) of cyclohexane and 1.269 g (14.4 mmol) of n-pentanol were dissolved in 48 ml of deionized water and stirred Finally, a microemulsion system is obtained. Among them, the molar concentration of cetyltrimethyl bromide is 0.04 mol / liter, the molar ratio of deionized water to cetyltrimethyl bromide is 20, and the molar ratio of n-amyl alcohol to cetyltrimethyl bromide is for 6. Then respectively 6 milliliters of molar concentrations are 0.4 mol / liter of oxalic acid, 2 milliliters of molar concentrations of 0.04 mol / liter of zinc sulfate solution and 4 milliliters of molar concentrations of 0.04 mol / liter of ferrous sulfate solution into the above microemulsion, That is, the molar ratio of oxalic acid to zinc salt in the microemulsion is 30, and the molar ratio of zinc salt to ferrous salt is 1:2. Stir for 10 hours. ZnFe was obtained after centrifugation and drying 2 (C 2 o 4 ) 3 Nanorod precursor...

Embodiment 3

[0024] First, 1.166 g (3.2 mmol) of cetyltrimethyl bromide, 4.611 g (54.78 mmol) of cyclohexane and 1.692 g (19.2 mmol) of n-pentanol were dissolved in 32 ml of deionized water and stirred Finally, a microemulsion system is obtained. Among them, the molar concentration of cetyl trimethyl bromide is 0.08 mol / liter, the molar ratio of deionized water to cetyl trimethyl bromide is 10, and the molar ratio of n-amyl alcohol to cetyl trimethyl bromide is for 4. Then 4 milliliters of oxalic acid with a molar concentration of 0.8 mol / liter, 6.4 milliliters of a molar concentration of 0.01 mol / liter of zinc chloride solution and 12.8 milliliters of a molar concentration of 0.01 mol / liter of ferrous sulfate solution were poured into the above microemulsion , that is, the molar ratio of oxalic acid and zinc salt in the microemulsion is 50, and the molar ratio of zinc salt and ferrous salt is 1:2. Stir for 24 hours. ZnFe was obtained after centrifugation and drying 2 (C 2 o 4 ) 3 N...

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Abstract

The invention discloses a preparation method of a nano-rod of porous zinc ferrite. The preparation method adopts a four-component micro emulsion system comprising hexadecyl trimethyl bromide/water/cyclohexane/n-amyl alcohol, dissoluble zinc salt, dissoluble ferrite and oxalic acid as reactants to firstly synthesize the ZnFe2(C2O4)3 precursor of nano-rod, and then is calcined at the temperature of 500 DEG C to 900 DEG C, the nano-rod of the porous zinc ferrite, the chemical formula of which is ZnFe2O4, is obtained owing to the separation of oxalic acid radical from the precursor in the process of calcination. The nano-rod of the porous zinc ferrite is provided with a plurality of nano-pores, the products obtained by the preparation method is uniformly dispersed with good crystallization, diameter being 30nm to100nm and length being 1mum to 10mum.

Description

technical field [0001] The invention relates to a preparation method of porous zinc ferrite nanorods. Background technique [0002] The chemical formula of zinc ferrite is ZnFe 2 o 4 , is an iron-zinc binary oxide with a spinel structure. It has attracted much attention because of its wide range of applications in information storage, electronic devices, photoconductive materials and sensitive devices. In the past ten years, with the rise of nanotechnology, the research and application of zinc ferrite nanomaterials is a hot issue. Since Chu et al. reported that zinc ferrite nanoparticles have strong gas-sensing properties to ethanol (X.F.Chu et al., Sens.Actuators B., 55, 19 (1999)), people have successively discovered zinc ferrite nanomaterials It exhibits gas-sensing properties for many reducing gases such as hydrogen sulfide, carbon monoxide and ethanol. In addition, Yao et al. also reported that zinc ferrite nanocrystals prepared by pyrolysis showed superparamagneti...

Claims

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Application Information

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IPC IPC(8): C01G49/00C01G9/00
Inventor 祝洪良左佃太顾小云王正凯姚奎鸿
Owner ZHEJIANG SCI-TECH UNIV
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