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Broad-spectrum-response polynaphthalimide photocatalytic material and preparation method thereof

A polynaphthalimide photocatalytic material technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., to achieve mild preparation conditions and a wide range of applicable monomers. , to avoid the effect of harsh synthesis conditions

Inactive Publication Date: 2019-06-14
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although its spectral response range and photocatalytic activity can be fine-tuned by copolymerization, post-modification, etc., due to the high synthesis temperature (550 °C) that limits the monomers that can be used for polymerization and copolymerization, such photocatalysts are usually only available at 200 ~ Photoresponsive in the 470 nm range

Method used

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  • Broad-spectrum-response polynaphthalimide photocatalytic material and preparation method thereof
  • Broad-spectrum-response polynaphthalimide photocatalytic material and preparation method thereof
  • Broad-spectrum-response polynaphthalimide photocatalytic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Dissolve 0.2523 g of melamine in 10 mL of NMP, add it to a 100 mL three-neck flask, pass argon, and stir magnetically at 0°C; weigh 0.8045 g of naphthalene tetracarboxylic dianhydride and dissolve it in 10 mL of NMP, and slowly add it dropwise to the melamine solution (about 4 h); react at 0 °C for 24 h, and react at 25 °C for 24 h to obtain a precursor solution; then precipitate and wash with ethanol; finally put it into a muffle furnace at 300 °C for 1 h to obtain polynaphthoyl imine photocatalytic materials.

Embodiment 2

[0028] Dissolve 0.4646 g of triaminotriphenylamine in 10 mL of NMP, add it to a 100 mL three-neck flask, pass through argon, and stir magnetically at 0°C; weigh 0.6436 g of naphthalene tetracarboxylic dianhydride and dissolve it in 15 mL of NMP, and slowly add it dropwise to Melamine solution (about 4 h); reacted at 0 °C for 24 h, and reacted at 25 °C for 24 h to obtain a precursor solution; then precipitated and washed with ethanol; finally put it into a muffle furnace at 300 °C for 1 h to obtain a polymer Naphthalimide Photocatalytic Materials.

Embodiment 3

[0030]Dissolve 0.2595g p-phenylenediamine in 10 mL DMSO, add it to a 100 mL three-neck flask, pass through argon, and stir magnetically at 0°C; weigh 1.0224 g 2,6-dibromo-1,4,5,8- Naphthalenetetracarboxylic anhydride was dissolved in 20 mL DMSO, and slowly added dropwise to the p-phenylenediamine solution (about 6 h); reacted at 0 °C for 36 h, and reacted at 25 °C for 24 h to obtain a precursor solution; then precipitated with ethanol and Washing; finally put it into a muffle furnace at 320 ℃ for 1 h to obtain polynaphthalimide photocatalytic material.

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Abstract

The invention discloses a broad-spectrum-response polynaphthalimide photocatalytic material and a preparation method thereof. The reaction method comprises the following steps: dissolving two monomersin an organic solvent, reacting at 0-5 DEG C for 24-48 hours to generate polyamic acid, and continuously reacting at 300-350 DEG C for 1-2 hours to imidize into the polynaphthalimide photocatalytic material, wherein a first monomer is naphthalenetetracarboxylic dianhydride and derivatives thereof; a second monomer is conjugated aromatic amine or heterocyclic amine with an amino functional group;and the molar ratio of the anhydride functional group of the first monomer to the amino functional group of the second monomer is 1:1-1.5:1. The polynaphthalimide photocatalytic material with wide spectral response (200-1400 nm) is prepared by adopting the preparation method which is simple to operate and mild in reaction condition. The material can effectively degrade organic pollutants under ultraviolet light or visible light, and has wide application prospects in the aspects of energy and environment.

Description

technical field [0001] The invention relates to a wide-spectrum (200-1400nm) responsive polynaphthalimide photocatalyst material and a preparation method thereof, belonging to the field of environmental protection materials. Background technique [0002] Energy shortage and environmental pollution are two urgent problems faced by human beings. Photocatalytic technology can use sunlight to split water to produce clean energy, convert solar energy into chemical energy to completely mineralize organic pollutants, and control environmental pollution. It shows broad application prospects in solving energy and environmental problems. However, the current photocatalytic materials based on inorganic semiconductors such as titanium oxide and zinc oxide are mostly limited by bottlenecks such as narrow spectral response range and low photocatalytic activity, and their practical applications are still limited. The development of new photocatalytic materials with wide spectral response ...

Claims

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Application Information

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IPC IPC(8): C08G73/10B01J31/06A62D3/17A62D101/20A62D101/26A62D101/28
Inventor 江龙王秦淡宜
Owner SICHUAN UNIV
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