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Method for preparing porous magnetic and catalytic double-functional one-dimensional composite material

A composite material and dual-function technology, applied in the direction of spinning solution preparation, fiber treatment, fiber chemical characteristics, etc., to achieve high photocatalytic activity, strong ferromagnetism, and uniform product distribution

Inactive Publication Date: 2012-02-08
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently on the synthesis of ZnFe by such methods 2 o 4 / Fe 3 o 4 / Ag / C carbon-based fibers composited with multiple components have not been reported yet.

Method used

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  • Method for preparing porous magnetic and catalytic double-functional one-dimensional composite material
  • Method for preparing porous magnetic and catalytic double-functional one-dimensional composite material
  • Method for preparing porous magnetic and catalytic double-functional one-dimensional composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1: Preparation of one-dimensional metal salt / PVP precursor.

[0045] (1) 1.8mmolZn(Ac) 2 2H 2 O, 1.8mmol Fe(NO 3 ) 3 9H 2 O and 0.1 mmol AgNO 3 Dissolve in 1 g of distilled water and 1 g of absolute ethanol, and stir magnetically for 2 hours at room temperature to fully dissolve to obtain solution a.

[0046] (2) Slowly add 1200mg of polyvinylpyrrolidone (PVP) into 10g of absolute ethanol, and magnetically stir for 2 hours to completely dissolve it to form a transparent solution b,

[0047] (3) Finally, solution b was slowly added to solution a, and magnetic stirring was continued for 2 hours to obtain a yellow viscous solution c.

[0048] (4) Finally, the solution c is spun by an electrospinning device to obtain a one-dimensional fiber. The electrospinning parameters are as follows: the solution flow rate is 0.6-1.2mLh -1 , the distance between the nozzle and the ground plate is 15cm, and the voltage is 20-25kV. The obtained fibers were dried in an oven...

Embodiment 2

[0050] Embodiment 2: preparation of ZnFe with different Ag loads 2 o 4 / Fe 3 o 4 / Ag mesoporous carbon fibers.

[0051] (1) 1.8mmolZn(Ac) 2 2H 2 O, 1.8mmol Fe(NO 3 ) 3 9H 2 O and 0~0.2mmolAgNO 3 Dissolve in 1g of distilled water and 1g of absolute ethanol, stir magnetically at room temperature for 2 hours to fully dissolve to obtain solution a;

[0052] (2) Slowly add 1200mg of PVP into 10g of absolute ethanol, and magnetically stir for 2 hours to completely dissolve it to form a transparent solution b;

[0053] (3) Finally, solution b is slowly added to solution a, and magnetic stirring is continued for 2 hours to obtain a yellow viscous solution c;

[0054] (4) Finally, the solution c is spun by an electrospinning device to obtain a one-dimensional fiber. The electrospinning parameters are as follows: the solution flow rate is 0.6mLh -1 , the distance between the nozzle and the ground plate is 15cm, and the voltage is 20kV. The obtained fibers were dried in an ov...

Embodiment 3

[0060] Embodiment 3: preparation ZnFe 2 o 4 / ZnO / Ag one-dimensional composites.

[0061] (1) 1.8mmolZn(Ac) 2 2H 2 O, 1.8mmol Fe(NO 3 ) 3 9H 2 O and 0.1 mmol AgNO 3 Dissolve in 1g of distilled water and 1g of absolute ethanol, and stir magnetically for 2 hours at room temperature to fully dissolve (1).

[0062] (2) Slowly add 1200mg of PVP into 10g of absolute ethanol, and magnetically stir for 2 hours to completely dissolve it to form a transparent solution (2),

[0063] (3) Finally, the solution (2) was slowly added to the solution (1), and magnetic stirring was continued for 2 hours to obtain a yellow viscous solution (3).

[0064] (4) Finally, the solution (3) is spun by electrospinning equipment to obtain one-dimensional fibers. The electrospinning parameters are as follows: the solution flow rate is 0.6mLh -1 , the distance between the nozzle and the ground plate is 15cm, and the voltage is 20kV. The obtained fibers were dried in an oven at 60 °C for 12 h.

[0...

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Abstract

The invention relates to a method for preparing a porous magnetic and catalytic double-functional one-dimensional composite material. The method comprises the following steps of: (1) dissolving Zn(Ac)2.2H2O, Fe(NO3)3.9H2O and AgNO3 in distilled water and absolute ethanol, stirring by using magnetic force at room temperature for 1 to 3 hours until the added components are fully dissolved to obtain a solution a, slowing adding polyvinylpyrrolidone into the absolute ethanol, stirring by using the magnetic force for 1 to 3 hours until the polyvinylpyrrolidone is completely dissolved to form a transparent solution b, slowly adding the solution b into the solution a, continuously stirring by using the magnetic force for 1 to 3 hours, and thus obtaining a yellow viscous solution c; and (2) spinning by using the solution c through an electrostatic spinning instrument to obtain a one-dimensional fiber, drying the obtained fiber in a drying oven at the temperature of between 50 and 70 DEG C for 10 to 14 hours, calcinating the obtained fiber under different atmospheres, and thus obtaining the porous magnetic and catalytic double-functional one-dimensional composite material. Compared with the prior art, the method has the advantages of controllable components and crystal forms, high purity, convenience for treatment and the like and is easy to industrialize.

Description

technical field [0001] The invention belongs to the field of micro / nano material preparation technology and nano functional materials, in particular to a preparation of porous dual-function (magnetic and photocatalytic properties) ZnFe 2 o 4 / Fe 3 o 4 / Ag / C and ZnFe 2 o 4 / ZnO / Ag one-dimensional composite method. Background technique [0002] Recently, spinel ferrite (AFe 2 o 4 ) materials have received more and more attention. As one of the main types, zinc-iron spinel (ZnFe 2 o 4 ) nanostructures have been studied and can be applied in different fields due to their remarkable properties, such as magnetic and electrical behavior, adsorption capacity for high-temperature exhaust gas desulfurization, etc.]. In addition, due to its narrow bandgap width (1.92eV), it can be applied to photocatalytic degradation of organic pollutants. Therefore, so far, ZnFe with various morphologies 2 o 4 The nanostructures were obtained by hydrothermal method, microemulsion method,...

Claims

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Application Information

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IPC IPC(8): D01F9/10D01F9/21D01D5/00D01D5/40D01D1/02D01D10/02
Inventor 吴庆生谢劲松
Owner TONGJI UNIV
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