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

Preparation method for soluble amino phthalocyanine-titanium dioxide near-infrared photocatalyst

A near-infrared light, titanium dioxide technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., can solve the problem of inability to expand the near-infrared region, and achieve high catalytic Efficiency, combined with uniform effect

Inactive Publication Date: 2015-09-23
CHANGZHOU UNIV
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually prepared phthalocyanine-TiO 2 The sensitizer phthalocyanine used in photocatalyst has strong absorption in the visible light region, so this kind of phthalocyanine-TiO 2 Photocatalyst can only make TiO 2 The wavelength response range of the phthalocyanine-TiO is extended to the visible region, but cannot be extended to the near-infrared region, so the prepared phthalocyanine-TiO 2 Photocatalysts have no absorption in the near-infrared region

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
  • Preparation method for soluble amino phthalocyanine-titanium dioxide near-infrared photocatalyst
  • Preparation method for soluble amino phthalocyanine-titanium dioxide near-infrared photocatalyst
  • Preparation method for soluble amino phthalocyanine-titanium dioxide near-infrared photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]The soluble amino phthalocyanine selected in this embodiment is 3,3', 3", 3"'-tetra-n-octylamine manganese phthalocyanine (α-TnOAMnPc), the specific structural formula is as follows, and the synthesis method is as follows:

[0030]

[0031] (1) Synthesis of 3-n-octylaminophthalonitrile (α-nOAPn):

[0032] 17.30g 3-nitrophthalonitrile, 14.19g n-octylamine, 20.24g triethylamine and 50mL DMAC were added successively to a 250mL three-necked flask equipped with a thermometer and a magnetic stirrer, and reacted at room temperature for 12h under stirring conditions. After the reaction is over, pour the reaction solution into a beaker filled with 500mL deionized water for precipitation, wash the precipitate with water until the washing solution is neutral, dry it, and recrystallize it with absolute ethanol to obtain an orange-yellow solid, which is dried in a vacuum oven at 50°C After 24 hours, 25.4 g of orange-yellow solid crystals were obtained, with a yield of 84%.

[003...

Embodiment 2

[0038] The soluble amino phthalocyanine selected in this embodiment is 4,4', 4 ", 4 "'-tetra-n-butylamino manganese phthalocyanine (β-TnBAMnPc), the specific structural formula is as follows, and the synthesis method is as follows:

[0039]

[0040] (1) Synthesis of 4-n-butylaminophthalonitrile (β-nBAPn):

[0041] In a 250mL three-necked flask equipped with a thermometer and a magnetic stirrer, 17.30g of 4-nitrophthalonitrile, 8.03g of n-butylamine, 20.24g of triethylamine and 50mL of DMAC were sequentially added, and reacted at room temperature for 12h under stirring conditions. After the reaction is over, pour the reaction solution into a beaker filled with 500mL deionized water for precipitation, wash the precipitate with water until the washing solution is neutral, dry it, and recrystallize it with absolute ethanol to obtain an orange-yellow solid, which is dried in a vacuum oven at 50°C After 24 hours, 22.9 g of orange-yellow solid crystals were obtained, with a yield ...

Embodiment 3

[0047] The soluble aminophthalocyanine selected in this embodiment is 3,3′,3″,3″′-tetradimethylaminocopper phthalocyanine (α-TDMACuPc), the specific structural formula is as follows, and the synthesis method is as follows:

[0048]

[0049] (1) Synthesis of 3-dimethylaminophthalonitrile (α-DMAPn):

[0050] In a 250mL three-necked flask equipped with a thermometer and a magnetic stirring bar, add 17.30g 3-nitrophthalonitrile, 20.45g dimethylamine aqueous solution (33wt%), 20.24g triethylamine and 50mL DMAC successively, under stirring condition Reaction at room temperature for 12h. After the reaction is over, pour the reaction solution into a beaker filled with 500mL deionized water to precipitate, wash the precipitate with water until the washing liquid is neutral, dry, and recrystallize with absolute ethanol to obtain an orange-yellow solid, which is put into a vacuum oven After drying at 50°C for 24 hours, 18.5 g of orange-yellow solid crystals were obtained, with a yiel...

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 relates to a preparation method for a soluble amino phthalocyanine-titanium dioxide near-infrared photocatalyst. The method comprises the following steps: synthesis of amino phthalonitrile, synthesis of amino phthalocyanine and preparation of the amino phthalocyanine-TiO2 near-infrared photocatalyst by using a sol-gel method. The invention has the following beneficial effects: the synthesized soluble amino phthalocyanine with strong adsorption in a near-infrared region is soluble in an acid sol system of TiO2; since the amino phthalocyanine-TiO2 photocatalyst is prepared by using the sol-gel method, amino phthalocyanine can contact with TiO2 in a molecular morphology, so the combination of amino phthalocyanine and TiO2 is uniform and stable, and the wavelength response range of TiO2 can extend to the near-infrared region; and the photocatalytic degradation effect of the amino phthalocyanine-TiO2 near-infrared photocatalyst is superior to the photocatalytic degradation effect of TiO2, and compared with common phthalocyanine-TiO2 photocatalyst, the amino phthalocyanine-TiO2 near-infrared photocatalyst has higher catalytic efficiency; meanwhile, the amino phthalocyanine-TiO2 near-infrared photocatalyst has certain stability and can be recycled.

Description

technical field [0001] The invention relates to a preparation method of a soluble aminophthalocyanine-titanium dioxide near-infrared photocatalyst. Background technique [0002] In today's society, environmental pollution and energy crisis have increasingly attracted people's attention. Environmentally friendly, energy-saving and energy-saving technologies have become research hotspots. Semiconductor photocatalytic degradation technology is a technology that adapts to this concept. Among many semiconductor materials, TiO 2 It has become the most in-depth study of a photocatalyst. TiO 2 Corrosion resistance, good stability, non-toxic and pollution-free, low price, easy to obtain, and high photocatalytic activity. However, it also has certain application defects. Its forbidden band is relatively wide, about 3.2eV, which determines that it can only absorb ultraviolet light with a wavelength less than 387nm, and this part of the sunlight reaching the earth only accounts for...

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): B01J31/38C02F1/30
Inventor 李坚徐延明赵明任强汪称意
Owner CHANGZHOU UNIV
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