Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and application of a photosensitizer for preparing a composite photocatalyst

A technology of compounding light and photosensitizer, applied in the field of material science, can solve the problems of limited application, low separation and transfer efficiency, etc., to achieve the effect of promoting coating and bonding, easy availability of raw materials, and reducing the probability of compounding

Inactive Publication Date: 2016-08-24
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the perylene diimide molecule itself has an electron-withdrawing structure, and the generation, separation and transfer efficiency of photogenerated charges are low. In addition, when it is used as a photosensitizer, it also needs to be treated with concentrated acid, concentrated alkali or high temperature and high pressure, which limits its application in solar semiconductor light. Application of Catalytic Hydrogen Production

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
  • Method and application of a photosensitizer for preparing a composite photocatalyst
  • Method and application of a photosensitizer for preparing a composite photocatalyst
  • Method and application of a photosensitizer for preparing a composite photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Photosensitizer N, the synthesis of N'-dimethylamino-p-benzyl-perylene diimide:

[0033] Weigh 784.6mg of 3,4,9,10-perylenetetracarboxylic anhydride, 901.4mg of N,N'-dimethylamino-p-benzylamine, 20g of imidazole and 18mg of zinc acetate into a 100mL three-neck round bottom flask , oil bath at 120°C, magnetically stirred for 5 hours, then cooled and poured into a 500mL single-necked round-bottomed flask containing 100mL of absolute ethanol. After magnetically stirred for half an hour, 300mL of 2M hydrochloric acid aqueous solution was added, magnetically stirred for 12 hours, and then pumped Filter, wash with water, wash with methanol, and finally dry at 80°C for 12 hours to obtain N,N'-dimethylamino-p-benzyl-perylenediimide powder;

[0034] Preparation of composite photocatalyst substrate platinum / graphite-like carbon nitride:

[0035] Weigh 5 g of melamine, put it into a porcelain crucible after grinding, spread it evenly, put it into a muffle furnace for calcination ...

Embodiment 2

[0041] Photosensitizer N, the synthesis of N'-dimethylamino-p-benzyl-perylene diimide:

[0042] Weigh 784.6mg of 3,4,9,10-perylenetetracarboxylic anhydride, 901.4mg of N,N'-dimethylamino-p-benzylamine, 20g of imidazole and 18mg of zinc acetate into a 100mL three-neck round bottom flask , oil bath temperature 120 ℃, magnetic stirring reaction for 5 hours, after cooling and pouring into a 500mL single-necked round bottom flask containing 100mL absolute ethanol, after magnetic stirring for half an hour, add 300mL 2M hydrochloric acid aqueous solution, magnetic stirring for 12 hours, then Suction filtration, washing with water, washing with methanol, and finally drying at 80°C for 12 hours to obtain N,N'-dimethylamino-p-benzyl-perylenediimide powder;

[0043] Preparation of composite photocatalyst substrate platinum / graphite-like carbon nitride:

[0044] Weigh 5 g of melamine, put it into a porcelain crucible after grinding, spread it evenly, put it into a muffle furnace for calc...

Embodiment 3

[0050] Photosensitizer N, the synthesis of N'-dimethylamino-p-benzyl-perylene diimide:

[0051] Weigh 784.6mg of 3,4,9,10-perylenetetracarboxylic anhydride, 901.4mg of N,N'-dimethylamino-p-benzylamine, 20g of imidazole and 18mg of zinc acetate into a 100mL three-neck round bottom flask , oil bath temperature 120 ℃, magnetic stirring reaction for 5 hours, after cooling and pouring into a 500mL single-necked round bottom flask containing 100mL absolute ethanol, after magnetic stirring for half an hour, add 300mL 2M hydrochloric acid aqueous solution, magnetic stirring for 12 hours, then Suction filtration, washing with water, washing with methanol, and finally drying at 80°C for 12 hours to obtain N,N'-dimethylamino-p-benzyl-perylenediimide powder;

[0052] Preparation of composite photocatalyst substrate platinum / graphite-like carbon nitride:

[0053] Weigh 5 g of melamine, put it into a porcelain crucible after grinding, spread it evenly, put it into a muffle furnace for calc...

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 method for preparation of a composite photocatalyst from a photosensitizer and use thereof, according the method, the photosensitizer is N, N '-dimethyl amino-p-benzyl-perylene diimide, platinum loaded organic semiconductor photocatalyst graphite-like type carbon nitride is used as a matrix, and the composite photocatalyst is constructed by adsorption of the photosensitizer N, N '-dimethyl amino-p-benzyl-perylene diimide by a supramolecular aggregation method; and by dispersion of the composite photocatalyst prepared by the method in an aqueous solution of electron donor sacrificial reagent triethanolamine, the use of the composite photocatalyst in preparation of hydrogen by visible light responsive photocatalytic decomposition of water can be realized. The photosensitizer used in the method is novel in structure, is synthesized and high in yield, has photochemical stability, and is wide in visible light response range, and raw materials are easy to get and can be recycled. The composite photocatalyst has excellent photochemical and thermal stability and good response to visible light, and the preparation method is simple and easy, the raw materials are rich in sources, and the composite photocatalyst can be used for low-cost practical preparation of hydrogen by solar power photocatalytic decomposition of water.

Description

technical field [0001] The invention belongs to the technical field of material science, and in particular relates to a method and application of a photosensitizer for preparing a composite photocatalyst. Background technique [0002] Hydrogen energy is an efficient green energy, how to produce it cheaply and efficiently on a large scale is a key factor restricting its application. At present, there are many hydrogen production technologies in the industry, such as hydrogen production from fossil fuels, hydrogen production by electrolysis of water, hydrogen production by thermal decomposition of water, and biological hydrogen production, etc., generally have harsh reaction conditions, high energy consumption, many by-products, environmental pollution or high cost. Insufficient, therefore, in recent decades, both academia and industry have been committed to finding and developing new hydrogen production technologies. Since the discovery of semiconductor photocatalysis techno...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/28C01B3/04
CPCY02E60/36Y02P20/133
Inventor 王传义陈帅吴咏梅李英宣
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com