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

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...

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 use, relates to highly active oxide-coated porous powder and its preparation method and use, the powder includes nano-scale titanium dioxide, alumina, three Chromium oxide, nickel oxide, iron oxide and mixtures of two or more of these substances in any weight ratio 25% to 65%, alkaline earth metal oxides 5% to 60%, silicide and / or boride and / or rare earth oxide 5% to 45%, the powder is used to make environmental air purification, self-cleaning, deodorizing, antibacterial and antifouling coatings, and its antibacterial effect is not ideal