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PVDF (Polyvinylidene Fluoride)/Fe-Pd bi-metal nanoparticle hybrid membrane and preparation method thereof

A metal nanoparticle and bimetallic nanotechnology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compounds/hydrides/coordination complex catalysts, etc., can solve poor reusability, low reactivity, operation high cost etc.

Inactive Publication Date: 2014-03-05
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of low reactivity, poor reusability and high operating cost of existing nano-iron degraded organic chlorides

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Preparation of polymer microspheres: Dissolve 1.0 g of monomer methacrylic acid, 1.0 g of crosslinking agent ethylene glycol dimethacrylate, and 0.04 g of initiator azobisisobutyronitrile in 80 mL of acetonitrile , react at 83°C for 1.5h, centrifuge, precipitate, and dry in vacuum to obtain polymethacrylic acid microspheres;

[0022] (2) Preparation of casting solution: disperse the polymer microspheres obtained in step (1) in N,N-dimethylformamide (DMF) in different blending ratios, stir at 65°C to obtain a completely transparent solution, Leave standstill under vacuum condition for defoaming 2h, obtain polymer microsphere content and be 0.5wt%, 2%, 6%, 10wt%, 20wt%, 30wt%, 40wt%, mass concentration is the casting film of 20% (wt%) Liquid 10g;

[0023] (3) Preparation of PVDF / polymer microsphere membrane: Pour the casting solution obtained in step (2) on a dry and smooth glass plate, scrape it evenly with a glass rod to form a membrane, and immerse in water with d...

Embodiment 2

[0027] (1) Preparation of polymer microspheres: 0.8 g of monomeric acrylic acid, 1.0 g of crosslinking agent ethylene glycol dimethacrylate, and 0.04 g of initiator azobisisobutyronitrile were dissolved in 80 mL of acetonitrile, Reaction at 83°C for 1.5h, centrifugation, precipitation, and vacuum drying to obtain polyacrylic acid microspheres;

[0028] (2) with example 1;

[0029] (3) with example 1;

[0030] (4) with example 1;

[0031] (5) Same as Example 1.

Embodiment 3

[0033] (1) with example 1;

[0034] (2) Preparation of casting solution: disperse the polymer microspheres obtained in step (1) in N-methylpyrrolidone in different blending ratios, stir at 75°C to obtain a completely transparent solution, and stand under vacuum for defoaming 3h, to obtain polymer microspheres content of 0.5wt%, 2%, 6%, 10wt%, 20wt%, 30wt%, 40wt%, mass concentration of 18.5% (wt%) casting solution 10g;

[0035] (3) with example 1;

[0036] (4) with example 1;

[0037] (5) Same as Example 1.

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Abstract

The invention relates to a PVDF (Polyvinylidene Fluoride) / Fe-Pd bi-metal nanoparticle hybrid membrane and a preparation method thereof. The preparation method comprises the steps of blending polymer microspheres and PVDF to prepare a membrane, and then, loading ferrum-palladium bi-metal nanoparticles to prepare the hybrid membrane with favorable catalytic reaction activity and separation performance. By using the PVDF / Fe-Pd bi-metal nanoparticle hybrid membrane, chlorine-contained organisms such as trichloro ethylene, monochloroacetic acid, dichlorinated biphenyl, dichlorphenoxyacetic acid and the like can be subjected to reductive dechlorination reaction, and chlorine atoms in the chlorine-contained organisms are converted into hydrogen atoms. In addition, the membrane can also be used for the catalytic reduction reaction of nitro in nitrobenzene molecules such as aminonitrobenzene, nitrobenzene, methylnitrobenzene and the like so as to convert the nitro into an amino group.

Description

technical field [0001] The invention relates to a PVDF / Fe-Pd bimetallic nanoparticle hybrid membrane and a preparation method thereof, specifically, a polymer microsphere and polyvinylidene fluoride (PVDF) are blended to form a membrane, and then loaded with iron-palladium The invention relates to bimetallic nanoparticle, which obtains PVDF / Fe-Pd bimetallic nanoparticle hybrid film, and belongs to the field of polymer science and technology. Background technique [0002] There are 25 kinds of organic compounds commonly found in water pollution, including 10 kinds of chlorinated organic compounds (such as trichlorethylene, etc.). These substances are highly toxic and difficult to degrade. Once they enter the environment, they will pose a long-term threat to humans and their ecological environment. In recent years, the impact of chlorinated organic compounds on water quality has attracted great attention from scientists, and its degradation technology has also been extensivel...

Claims

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Application Information

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IPC IPC(8): B01D71/34B01D69/02B01D67/00B01J31/28C02F1/44C02F1/70C02F101/36
Inventor 陈熙毕丗胤赵博武陈莉付维贵冯霞杨青盛慧颖
Owner TIANJIN POLYTECHNIC UNIV
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