Method for preparing nitrogen and sulfur synchronous doped nanometer titanium dioxide photocatalyst

A nano-titanium dioxide and photocatalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., to achieve the effect of increasing response and improving catalytic activity

Inactive Publication Date: 2010-06-23
HEILONGJIANG UNIV
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, N and S modified TiO can be prepared simultaneously by using one dopi

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1:

[0016] Nitrogen and sulfur synchronously doped nanometer titanium dioxide photocatalyst preparation method, the present invention adopts sol-gel method (Sol-Gel) to prepare N and S modified TiO 2 Photocatalyst, the composition includes: the preparation of titanium source and doping source solution, the preparation of said titanium source solution: take 80L of absolute ethanol, add 20L of tetrabutyl titanate to said absolute ethanol, and stir to obtain Titanium source solution; The doping source solution is prepared by adding 20L of absolute ethanol, 20L of deionized water and 4L of nitric acid with a content of 65%-68% to the dropping funnel to form a mixed solution by volume. Add 13% of cystine by weight of the mixed solution to the mixed solution and shake to obtain a dopant source solution; mix the titanium source solution and the doped source solution to form a wet gel, which is then dried in an oven to obtain a dry gel The glue is finally placed in a muff...

Example Embodiment

[0017] Example 2:

[0018] In the preparation method of the above-mentioned nitrogen and sulfur synchronously doped nano titanium dioxide photocatalyst, the mixing of the titanium source solution and the doping source solution is to add the doping source solution dropwise to the titanium source solution at a rate of 2-3 seconds per drop Stir continuously with a magnetic stirrer, and continue to stir for 0.5 hours after the addition is complete.

Example Embodiment

[0019] Example 3:

[0020] In the preparation method of the above-mentioned nitrogen and sulfur synchronously doped nano-titanium dioxide photocatalyst, the said roasting is without protective gas and the temperature is 350°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

The invention relates to a method for preparing a nitrogen and sulfur synchronous doped nanometer titanium dioxide photocatalyst. One method adopting a doping source and simultaneously preparing the N and S modified TiO2 photocatalyst has not been reported. The method comprises the following steps of: preparing a titanium source solution and a doping source solution, weighting 80 parts by volume of anhydrous alcohol, adding 20 parts of tetrabutyl titanate into the anhydrous alcohol, and stirring to obtain the titanium source solution; adding 20 parts by volume of anhydrous alcohol, 20 parts of deionized water and 4 parts of 65%-68% nitric acid into a drop funnel to form a mixing solution, adding cystine accounting for 13% of the weight of the mixing solution into the mixing solution, and uniformly shaking to obtain the doping source solution; mixing the titanium source solution with the doping source solution to form wet gel, drying in a baking oven, and placing in a muffle furnace to roast to obtain the anatase type nanometer titanium dioxide photocatalyst with different spherical particle sizes. The preparation method is used for preparing a titanium dioxide photocatalyst.

Description

Technical field: [0001] The invention relates to the preparation of a novel photocatalyst, in particular to a method for preparing a nitrogen and sulfur synchronously doped nano-titanium dioxide photocatalyst for treating organic waste water. Background technique: [0002] In recent years, the problem of environmental pollution has become increasingly serious, and semiconductor heterogeneous photocatalysis technology has gradually become a widely researched technology due to its great potential in water pollution and air pollution control. Among many semiconductor photocatalysts, TiO 2 Because of its non-toxic, good chemical stability, strong oxidation ability and many other advantages, it is considered to be the most suitable photocatalyst for popularization and application. However, due to the semiconductor nano-TiO 2 Higher excitation energy - it can only be excited by ultraviolet light with a shorter wavelength (λ<387nm), which makes the utilization rate of sunlight...

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): B01J21/06C02F1/32
CPCY02W10/37
Inventor 于秀娟席战勇邢子鹏
Owner HEILONGJIANG 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