Rare-earth-carrying nano titanium dioxide antibacterial agent and preparation method thereof

A load-type, antibacterial agent technology, which is applied in the field of rare earth-loaded nano-titanium dioxide antibacterial agent and its preparation, can solve the problems of limited application range, poor antibacterial ability, and unsatisfactory antibacterial effect, and achieve excellent antibacterial effect and improved antibacterial function , Excellent antibacterial effect

Inactive Publication Date: 2003-11-12
SICHUAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hu Yaojun, Inorganic antibacterial materials, Rare Metal Letters, 2000, (2): P10, introduced three inorganic antibacterial materials that have been studied relatively maturely and have been partially applied, namely silver-loaded antibacterial materials, copper-containing stainless steel antibacterial materials and photocatalytic Titanium dioxide antibacterial material, but the scope of use is limited, and the antibacterial ability is poor
Chinese patent CN1300804, active oxide-coated porous powder material and its preparation method and

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0035] Nano-anatase TiO 2 : 850Kg

[0036] Ce(NO 3 ) 3 : 20Kg

[0037] HNO 3 : Concentration 85% 110ml

example 2

[0039] Nano-anatase TiO 2 : 900Kg

[0040] Pr(NO 3 ) 3 : 15Kg

[0041] HNO 3 : Concentration 85% 100ml

example 3

[0043] Nano-anatase TiO 2 : 950Kg

[0044] Nd(NO 3 ) 3 : 10Kg

[0045] HNO 3 : Concentration 85% 90ml

[0046] 2. Preparation method of rare earth-supported nano-titanium dioxide antibacterial agent

[0047] (1) Nano-anatase TiO 2 The powder and rare earth salt are put into a nitric acid aqueous solution with a temperature of 40-60°C and a concentration of about 35-45%, and stirring while feeding;

[0048] (2) react for 4 to 6 hours, then filter to remove acid radical ions in the solution;

[0049] (3) Dry at a temperature of 150-250°C for 1-2 hours to remove moisture from the slurry;

[0050] (4) Roasting at a temperature of 400-650° C. for 3-6 hours, so that the loaded rare earth ions are fastened on TiO2;

[0051] (5) Grinding in an ultrafine mill, grading, testing and packaging.

[0052] The particle size of the final product is ≤1μm, nano anatase TiO 2 The content is 75-98%, Re 2 o 3 The content is 0.2-2%.

[0053] 3. Performance indicators

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Abstract

The invention discloses a rare-earth load type nano-TiO2 antimicrobial and making method, a new antimicrobial which uses the rare-earth ions as the antibacterial active component and the rare-earth activate nano-anatase type TiO2 and optically catalyzes antibacterial activity, composed of rare-earth element and semiconductor carrier. The nano-anatase type TiO2 80-99 shares, Re(NO3)3 10.7-0.3 share, and HNO3, the concentration 85%, 9.3-0.7 share. It makes mixing, constant-temperature blending, filtering, drying, baking and grinding to get the product, average particle diameter being not more than 1 micron m, the content of nano-anatase type TiO2 being 75-98%, and that of Re2O3 being 0.2-2%.

Description

1. Technical field [0001] The invention relates to a rare earth-loaded nano-titanium dioxide antibacterial agent and a preparation method thereof, belonging to the material field of inorganic antibacterial agents. 2. Background technology [0002] European patent 937398, Antibacterial and deodorant materials and method for their manufacture by adhering metallic silver and(or) copper on titanium oxide particles, reports antibacterial and deodorant materials and a method for preparing metallic silver or copper supported on titanium oxide particles, the Antibacterial agents are not only expensive, but also have problems such as discoloration. Soga M et al., Ag / TiO 2 composite ultra-fine particle studied with FE-SAM, J.Surf.Anal., 1999, 5(2): P326, reported that silver supported on titanium oxide nanoparticles to prepare inorganic antibacterial agents, but its cost is high and it is easy to change color. Zhoul Xu and Kuroda Koichi et al., Antibacterial effect of rutile form o...

Claims

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Application Information

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IPC IPC(8): A01N59/00
Inventor 涂铭旌刘雪峰蒋亚张波
Owner SICHUAN UNIV
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