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

Sol-gel method preparing active carbon-titanium dioxide composite photocatalyst method and application of the said photocatalyst

A technology for preparing activated carbon and sol-gel method, which can be used in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc. It can solve the problems of difficult recovery of photocatalysts and difficult recovery of adsorption capacity of activated carbon, and achieve low cost. Effect

Inactive Publication Date: 2007-10-17
SHANGHAI QIBAO HIGH SCHOOL
View PDF0 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is in controlling formaldehyde pollution, in order to solve the problem that single-use active carbon is difficult to restore adsorption capacity and single-use TiO 2 Problems such as difficulty in photocatalyst recovery, provide a method for preparing activated carbon-titanium dioxide composite photocatalyst composite catalyst by sol-gel method and the application of the composite photocatalyst in the control of formaldehyde pollution

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
  • Sol-gel method preparing active carbon-titanium dioxide composite photocatalyst method and application of the said photocatalyst
  • Sol-gel method preparing active carbon-titanium dioxide composite photocatalyst method and application of the said photocatalyst
  • Sol-gel method preparing active carbon-titanium dioxide composite photocatalyst method and application of the said photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The method for preparing active carbon-titanium dioxide composite photocatalyst by sol-gel method comprises the steps:

[0022] 1. Preparation of Nano Titanium Dioxide

[0023] Mix a certain amount of butyl titanate with absolute ethanol evenly under constant stirring, and keep stirring for 15 minutes, then add dropwise a catalyst made of water, acetic acid and absolute ethanol at a volume ratio of 4:5:10 under strong stirring. 10mL, continue stirring for 6-8 hours to obtain TiO 2 Sol spare.

[0024] 2. Preparation of composite photocatalyst

[0025] During the formation of the sol, add activated carbon according to the mass ratio of butyl titanate to carbon at 0.1:1. After fully stirring for 1 hour, vibrate in the ultrasonic wave for 1 hour, then put it into a sand funnel to vacuum filter out the excess sol, and dry it at 60°C for about 15 minutes. , repeated coating for 3 times, and then heat-treated in a muffle furnace at 450°C for 2h to obtain the activated carbo...

Embodiment 2

[0027] Analysis and Testing

[0028] 1. Experimental method

[0029] 1. Analyze samples with transmission electron microscope and dissecting microscope

[0030] TiO obtained by directly heat-treating a small amount of sol-gel 2 Nano-powders were ultrasonically dispersed in absolute ethanol solution for 15 minutes to measure their transmission spectra.

[0031] Take the cleaned activated carbon and activated carbon-titanium dioxide composite photocatalyst, and place it under an optical anatomical electron microscope capable of magnifying observation to observe its surface morphology.

[0032] 2. Drawing of standard concentration curve of formaldehyde solution

[0033] Take several 25mL graduated tubes with stoppers, add 0.00, 0.50, 1.00, 3.00, 5.00, 8.00mL formaldehyde standard solution (contains about 10 micrograms of formaldehyde per ml), add water to 25mL, add 2.5mL acetylacetone solution, shake well . Heat it in a water bath at 45-60°C for 30 minutes, take it out and c...

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

A process for preparing a composite photocatalyst of active carbon-titanium dioxide by a sol-gel method, and use of the composite photocatalyst are disclosed in the invention. The process includes: firstly mixing butyl titanate having a certain quantity with absolute ethyl alcohol in a condition of continuously agitating and continuously agitating for 15 minutes, adding in drops with catalyst formed by water, acetic acid and absolute ethyl alcohol which volume ratio is 4:5:10 under intense agitation to obtain TiO2 sol after continuous agitation; then in the sol generating process, adding active carbon according to weight ratio of butyl titanate and carbon as 0.1:1, after completely agitating, oscillating in ultrasonic wave and placing the sol in a hourglass type hopper to vacuumize and filter extra sol, after drying, heat treating to obtain the composite photocatalyst. The composite photocatalyst of active carbon-titanium dioxide prepared by the invention can be used for degrading formaldehyde, and a performance testing result shows that the composite photocatalyst can be cooperated for harmful gas for effectively degrading microscale formaldehyde in water, which effect is superior to that by only using one of the catalyst.

Description

technical field [0001] The invention relates to a preparation method of a photocatalyst and an application of the photocatalyst. Especially the method for preparing activated carbon-titanium dioxide composite photocatalyst by sol-gel method and the application of the photocatalyst. Background technique [0002] In recent years, the heat of interior decoration has also brought indoor air pollution. The harmful gases are mainly formaldehyde released from decorative materials and methyl mercaptan, hydrogen sulfide, ammonia, etc. produced in the living environment. When these gases are in parts per million, they can make people feel uncomfortable. Among them, formaldehyde is a highly toxic substance, and formaldehyde ranks second on the list of priority control of toxic chemicals in my country. Formaldehyde is defined as carcinogenic and teratogenic shape material by the World Health Organization, is the allergen of generally acknowledging, also is one of potential strong muta...

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): B01J37/00B01J37/34B01J21/18B01J21/06B01D53/72
Inventor 杨永桃胡霁瑶郑达
Owner SHANGHAI QIBAO HIGH SCHOOL
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com