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

Preparation method of mesoporous titanium dioxide material responding to visible light

A technology of mesoporous titanium dioxide and visible light, which is applied in the direction of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problems of low utilization rate of sunlight and limited practical application of catalysts, and achieve the expansion of multi-functional applications, The effect of excellent price and convenient operation

Inactive Publication Date: 2018-12-04
HUATIAN ENG & TECH CORP MCC +1
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Photocatalytic oxidation technology has attracted much attention because of its high efficiency and pollution-free in wastewater treatment, but due to TiO 2 The forbidden band of TiO is wide (the forbidden band width is 3.0-3.2eV), and it can only be excited by ultraviolet light, and ultraviolet light only accounts for 4% of sunlight, which leads to the low utilization rate of sunlight by the catalyst, which seriously limits the TiO 2 practical application, making TiO 2 With visible light response, improving its photocatalytic activity is the top priority

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 of mesoporous titanium dioxide material responding to visible light
  • Preparation method of mesoporous titanium dioxide material responding to visible light
  • Preparation method of mesoporous titanium dioxide material responding to visible light

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The preparation method of the visible light responsive mesoporous titanium dioxide material of the present invention comprises the following steps:

[0028] Preparation of TiO with acetylacetone and titanium source 2 Xerogel;

[0029] The prepared dry gel is adsorbed to dye wastewater;

[0030] Calcining the xerogel adsorbed dye wastewater.

[0031] Wherein, the above-mentioned titanium source can be titanium tetrachloride, titanium trichloride, tetrabutyl titanate, etc., considering the secondary pollution to the environment, the difficulty of the reaction, etc., titanium tetrachloride should be selected.

[0032] sum up and combine Figure 1 to Figure 5 , it can be seen that the present invention uses titanium tetrachloride as the titanium source, acetylacetone as the hydrolysis inhibitor, the intermediate xerogel as the adsorbent, and orange II (AO7) as the adsorbate to synthesize a visible light-responsive mesoporous titanium dioxide material .

Embodiment 1

[0035] (1) Put 20mL of ethanol into 100mL small beakers respectively, then add 2.5mL of acetylacetone while stirring, and stir for 20min.

[0036] (2) Add 3 mL of titanium tetrachloride to the solution in (1), and stir for 30 min.

[0037] (3) Fully mix 15 mL of ethanol and 3 mL of deionized water, add dropwise to the solution in (2), and stir for 60 min.

[0038] (4) Pour the sol into a clean watch glass, age at room temperature, and dry to constant weight to obtain TiO 2 dry gel.

[0039] (5) Add 0.02g / L dry gel into a beaker containing 100mL of AO7 solution with a concentration of 400mg / L. The initial pH of the solution is 6. The pH is not controlled during the experiment, and then placed in a constant temperature oscillation at 298K oscillating 4d at a speed of 200r / min.

[0040] (6) Put the adsorbed xerogel in an oven at 60°C for 18h, then put it into a muffle furnace, raise the temperature to 500°C at a rate of 1°C / min, keep it for 4h, and let it cool down to obtain ...

Embodiment 2

[0043] (1) Put 10mL of ethanol into 100mL small beakers respectively, then add 2mL of acetylacetone while stirring, and stir for 15min.

[0044] (2) Add 2 mL of titanium tetrachloride to the solution in (1), and stir for 20 min.

[0045] (3) Fully mix 12 mL of ethanol and 2 mL of deionized water, add dropwise to the solution in (2), and stir for 60 min.

[0046] (4) Pour the sol into a clean watch glass, age at room temperature, and dry to constant weight to obtain TiO 2 dry gel.

[0047] (5) Add 0.02g / L dry gel into a beaker containing 100mL of AO7 solution with a concentration of 300mg / L. The initial pH of the solution is 4. The pH is not controlled during the experiment, and then placed in a constant temperature oscillation at 298K oscillating 4d at a speed of 150r / min.

[0048] (6) Put the adsorbed xerogel in an oven at 60°C for 24h, then put it into a muffle furnace, heat it up to 500°C at a rate of 1°C / min, keep it for 4h, and let it cool down to get TiO with visible...

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

PropertyMeasurementUnit
adsorption capacityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a mesoporous titanium dioxide material responding to visible light. The preparation method comprises following steps: preparing TiO2 xerogel from acetylacetone and a titanium source; using prepared xerogel to absorb dye wastewater, and then burning the xerogel. The intermediate of photocatalytic material synthesis is taken as an adsorbent, which hasa large adsorption capacity; after adsorption, the intermediate is burned to generate the photocatalytic material, which is applied to photocatalysis to degrade organic pollutants; the photocatalyticefficiency is high, the service life of the photocatalytic material is prolonged, and the application range is enlarged.

Description

Technical field: [0001] The invention belongs to the field of industrial wastewater treatment and environmental functional materials, and in particular relates to synthesizing mesoporous titanium dioxide with visible light response through modification of dry gel, an intermediate product of a sol-gel method, to absorb dyes. Background technique: [0002] With the rapid development of printing and dyeing, chemical and pharmaceutical industries, the treatment of industrial wastewater has become a research hotspot. Photocatalytic oxidation technology has attracted much attention because of its high efficiency and pollution-free in wastewater treatment, but due to TiO 2 The forbidden band of TiO is wide (the forbidden band width is 3.0-3.2eV), and it can only be excited by ultraviolet light, and ultraviolet light only accounts for 4% of sunlight, which leads to the low utilization rate of sunlight by the catalyst, which seriously limits the TiO 2 practical application, making T...

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 Applications(China)
IPC IPC(8): C01G23/053B01J21/06C02F1/30
CPCC01G23/053C02F1/30B01J21/063C02F2305/10C01P2006/17C01P2006/16B01J35/39
Inventor 李明慧程寒飞詹茂华
Owner HUATIAN ENG & TECH CORP MCC
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