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Ni/Fe double-metal face-centered cubic crystal nano-particles and preparing method and application thereof

A face-centered cubic and nanoparticle technology, applied in the field of nanomaterials, can solve problems such as pollution and non-degradation, and achieve the effect of strong process controllability, non-polymerization, and uniform dispersion and polymerization.

Inactive Publication Date: 2014-07-02
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The United Nations Environment Program listed it as one of the 12 persistent toxic organic pollutants for global priority control, and most industrialized countries have stopped producing PCBs after the 1970s, but due to their stable nature, it is not easy to Degraded in the environment, PCBs will continue to pollute the environment for a long time

Method used

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  • Ni/Fe double-metal face-centered cubic crystal nano-particles and preparing method and application thereof
  • Ni/Fe double-metal face-centered cubic crystal nano-particles and preparing method and application thereof
  • Ni/Fe double-metal face-centered cubic crystal nano-particles and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Dissolve 4g of PVP (K30) in deionized water, mix thoroughly by magnetic stirring, and set the volume to 50ml to obtain a PVP solution with a mass volume concentration of 8%.

[0025] (2) Take 7.5ml of the PVP solution as described in (1) and dissolve it in the mixed solution of deionized water and absolute ethanol, transfer it into a three-necked bottle, and pass nitrogen to remove oxygen for 30 minutes. The total volume of the solution is 50ml, PVP solution is 7.5ml, deionized water is 22.5ml, ethanol is 20ml, and the volume ratio is 3:9:8.

[0026] (3) Weigh 0.417g FeSO 4 ·7H 2 O powder was added to the above solution, and mixed for 20 minutes under the condition of mechanical stirring at a speed of 2000r / min, so that FeSO 4 ·7H 2 O powder is fully dissolved, at this time FeSO 4 ·7H 2 The molar concentration of O is 0.03 mol / L.

[0027] (4) Slowly add NaBH dropwise into the three-necked bottle 4 solution, according to n(Fe 2+ ) and n(BH 4 —) Ratio 1:2, Na...

Embodiment 2

[0032] (1) Dissolve 5g of PVP (K30) in deionized water, mix thoroughly by magnetic stirring, and set the volume to 50ml to obtain a PVP solution with a mass volume concentration of 10%.

[0033] (2) Take 7.5ml of the PVP solution as described in (1) and dissolve it in the mixed solution of deionized water and absolute ethanol, transfer it into a three-necked bottle, and pass nitrogen to remove oxygen for 30 minutes. The total volume of the solution is 50ml, PVP solution is 7.5ml, deionized water is 22.5ml, ethanol is 20ml, and the volume ratio is 3:10:10.

[0034] (3) Weigh 0.417g FeSO 4 ·7H 2 O powder was added to the above solution, and mixed for 15 minutes under the condition of mechanical stirring at a speed of 2000r / min, so that FeSO 4 ·7H 2 O powder is fully dissolved, at this time FeSO 4 ·7H 2 The molar concentration of O is 0.03 mol / L.

[0035] (4) Slowly add NaBH dropwise into the three-necked bottle 4 solution, according to n(Fe 2+ ) and n(BH 4 —) Ratio 1:2,...

Embodiment 3

[0040] (1) Dissolve 5g of PVP (K30) in deionized water, mix thoroughly by magnetic stirring, and set the volume to 50ml to obtain a PVP solution with a mass volume concentration of 10%.

[0041] (2) Take 7.5ml of the PVP solution as described in (1) and dissolve it in the mixed solution of deionized water and absolute ethanol, transfer it into a three-necked bottle, and pass nitrogen to remove oxygen for 30 minutes. The total volume of the solution is 50ml, PVP solution is 7.5ml, deionized water is 22.5ml, ethanol is 20ml, and the volume ratio is 3:9:9.

[0042] (3) Weigh 0.417g FeSO 4 ·7H 2 O powder was added to the above solution, and mixed for 20 minutes under the condition of mechanical stirring at a speed of 2000r / min, so that FeSO 4 ·7H 2 O powder is fully dissolved, at this time FeSO 4 ·7H 2 The molar concentration of O is 0.03 mol / L.

[0043] (4) Slowly add NaBH dropwise into the three-necked bottle 4 solution, according to n(Fe 2+ ) and n(BH 4 —) Ratio 1:2, N...

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PUM

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Abstract

The invention discloses Ni / Fe double-metal face-centered cubic crystal nano-particles and a preparing method and application thereof. The liquid phase reduction method is adopted, PVP is used as a stabilizer, NaBH4 is used as a reducing agent, ferrous ions and nickle ions are added step by step for reduction, prepared Ni / Fe double-metal nano-particles are of a regular face-centered cubic structure, particle size distribution is even, particle size is large than the surface area, stability is good, and the polymerism can not easily happen. The prepared nano-particles can effectively catalyze and degrade polychlorinated biphenyl. Needed reaction equipment of the nano-particles is simple, equipment cost is low, the preparation process is high in controllability and simple in operation, the reaction condition is mild, and further industrial production is possible.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials. More specifically, it relates to a preparation method and application of face-centered cubic nanocrystal particles, and in particular to a method for preparing Ni / Fe bimetals by using PVP as a macromolecular template and utilizing a liquid phase reduction method. Methods and applications of face centered cubic nanocrystalline particles. Background technique [0002] Polychlorinated Biphenyls (PCBs) are typical persistent organic pollutants in the environment. Because of its high chemical inertness, thermal stability, flame retardancy, thermal conductivity and insulation, it has been widely used in the fields of electric power industry, plastic processing industry, chemical industry and printing. According to the statistics of the World Health Organization (WHO), since the beginning of production in the 1920s, to the end of the 1980s, the world has produced a total of about 2 × 10 7 tIndus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24C02F1/70C02F101/36
Inventor 赵林丁舒吕倩倩毛国柱齐云
Owner TIANJIN UNIV
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