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
View PDF3 Cites 4 Cited by
  • 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)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08G73/10B01J31/06A62D3/17A62D101/20A62D101/26A62D101/28
Inventor 江龙王秦淡宜
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap