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Polyimide composite foam material with photocatalytic performance as well as preparation method and application thereof

A technology of syntactic foam and polyimide, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalyst, special compound water treatment, etc., can solve the problem of low utilization of sunlight, inconvenient recycling, It can solve problems such as long processing cycle, and achieve the effect of being beneficial to recycling, improving utilization rate and improving effective separation.

Active Publication Date: 2022-06-07
QINGDAO ADVANCED MARINE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although PI has been studied as a photocatalyst carrier or photocatalyst in the prior art, the utilization rate of sunlight by the above photocatalyst is still low, and it is not easy to recycle and process, and the treatment cycle is long, which cannot meet the actual production requirements. need

Method used

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  • Polyimide composite foam material with photocatalytic performance as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A preparation method of a polyimide composite foam material with photocatalytic performance, comprising the following:

[0040] (I) Preparation of Y-Mn co-doped g-C 3 N 4 ;

[0041] a) Add 0.01 mol of yttrium nitrate and 0.045 mol of manganese nitrate to 50 mL of distilled water, then add 1 mol of melamine, stir magnetically for 30 min at 80 °C, and then ultrasonically treat for 30 min to obtain a mixed solution, which is dried at 110 °C for 13 hours to obtain a precursor;

[0042] b) Grind the precursor, calcined at 550°C for 4h in a nitrogen atmosphere, and the heating rate of the calcination is 4°C / min to obtain the target product Y-Mn / g-C 3 N 4 photocatalytic materials;

[0043] (II) Preparation of Ce-Co Co-doped Cu 3 P

[0044] (1) get 1mol copper nitrate, 0.02mol cerium nitrate, 0.03mol cobalt nitrate, 4mol yellow phosphorus and 0.3g sodium dodecylbenzene sulfonate and dissolve in 100mL deionized water successively, stir to make it evenly mixed;

[0045] (2...

Embodiment 2

[0050] A preparation method of a polyimide composite foam material with photocatalytic performance, comprising the following:

[0051] (I) Preparation of Y-Mn co-doped g-C 3 N 4 ;

[0052] a) Add 0.015mol of yttrium acetate and 0.015mol of manganese chloride into 50mL of distilled water, then add 1mol of melamine, stir magnetically at 90°C for 20min, then ultrasonically treat for 20min to obtain a mixed solution, and dry at 120°C for 12h to obtain a precursor ;

[0053] b) Grinding the precursor, calcining at 600°C for 3h in a nitrogen atmosphere, the heating rate of the calcination is 6°C / min, to obtain the target product Y-Mn / g-C 3 N 4 photocatalytic materials;

[0054] (II) Preparation of Ce-Co Co-doped Cu 3 P

[0055] (1) get 1mol copper acetate, 0.03mol cerium chloride, 0.02mol cobalt acetate, 6 yellow phosphorus and 0.4g cetyl trimethyl ammonium bromide and dissolve successively in the deionized water of 100mL, stir to make it mix uniformly;

[0056] (2) Transfer...

Embodiment 3

[0061] A preparation method of a polyimide composite foam material with photocatalytic performance, comprising the following:

[0062] (I) Preparation of Y-Mn co-doped g-C 3 N 4 ;

[0063] a) Add 0.005mol of yttrium nitrate and 0.075mol of manganese acetate into 50mL of distilled water, then add 1mol of melamine, stir magnetically for 40min at 70°C, then ultrasonically treat for 40min to obtain a mixed solution, and dry at 100°C for 14h to obtain a precursor;

[0064] b) Grinding the precursor, calcining at 500°C for 5h in a nitrogen atmosphere, the heating rate of the calcination is 3°C / min, to obtain the target product Y-Mn / g-C 3 N 4 photocatalytic materials;

[0065] (II) Preparation of Ce-Co Co-doped Cu 3 P

[0066] (1) get 1mol cupric chloride, 0.01mol cerium chloride, 0.04 cobalt nitrate, 3mol yellow phosphorus and 0.1g sodium dodecylbenzene sulfonate and dissolve in a certain amount of 100mL deionized water successively, stir to make it evenly mixed;

[0067] (2)...

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Abstract

The invention belongs to the field of wastewater purification, and particularly relates to a polyimide composite foam material with photocatalytic performance and a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing Y-Mn co-doped g-C3N4; and preparing the Ce-Co co-doped Cu3P, and preparing the Cu < 3 > P Then adding polyamide acid, graphene oxide, Y-Mn co-doped g-C3N4 and Ce-Co co-doped Cu3P into water, then adding triethylamine, stirring, and uniformly dispersing to obtain an aqueous dispersion; and performing vacuum freeze drying and thermal imidization to obtain the composite foam material. Through the synergistic effect of the components, the printing and dyeing wastewater treatment capacity is improved, the repeated utilization rate is high, and the material is an ideal material for treating printing and dyeing wastewater.

Description

technical field [0001] The invention belongs to the technical field of wastewater purification. More specifically, it relates to a polyimide syntactic foam material with photocatalytic properties and its preparation method and application. Background technique [0002] The methods of treating organic pollutants include physical method, chemical method, biological method and photolysis method. The physical method can only enrich the pollutants in the water, and cannot achieve degradation, and cannot fundamentally solve the pollution problem; the chemical method is prone to secondary pollution due to the use of chemical reagents; the microorganisms used in the biological method have strict requirements for degradation conditions, and Ingenious time; simple photolysis method leads to high energy consumption and high cost due to the use of ultraviolet light source. The photocatalytic degradation method has the advantages of mild conditions, no secondary pollution, high efficie...

Claims

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Application Information

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IPC IPC(8): C08J9/28C08L79/08C08K3/04C08K3/28C08K3/32B01J27/24B01J27/185C02F1/30C02F1/28C02F101/30C02F103/30
CPCC08J9/286C08J9/0066B01J31/06B01J27/24B01J27/1853C02F1/30C02F1/288C02F2305/10C02F2101/308C02F2103/30C08J2379/08B01J35/39B01J35/61Y02W10/37
Inventor 刘培礼陶刚张茂伟国晓军霍行
Owner QINGDAO ADVANCED MARINE MATERIAL TECH
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