Weak ultraviolet high efficiency multifunction germicide material research and development method
An ion and co-doping technology, applied in the fields of botanical equipment and methods, biocides, animal husbandry, etc., can solve the problem that the antibacterial function of inorganic ions cannot be exerted well, the immobilized catalyst is unstable, and the catalytic efficiency is only 1%. And other issues
Active Publication Date: 2007-01-24
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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Problems solved by technology
There are mainly the following problems: the powder catalyst is difficult to separate from the purified water body, and the immobilized catalyst is unstable and easy to fall off; the catalytic efficiency is low, and for the P25 titanium oxide suspension system with higher activity, in the actual wastewater treatment using solar energy, its Catalytic efficiency is only 1%, approximately ineffective
Therefore, in some cases, the antibacterial function of inorganic ions cannot be well exerted
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[0012] The technical characteristics and advantages of the present invention can be seen through the embodiments and application examples given below.
[0013] 1. Optical absorption properties and lattice structure of calcium hydroxyphosphate compounded with titanium and metal ions
[0014] 5.9g Ca(NO 3 ) 2 and 0.96g Ti(SO 4 ) 2 Dissolve in 400ml deionized and CO-free 2 in distilled water, where Ti / (Ca+Ti)=X Ti The value is 0.1, the total amount of Ca and Ti in the solution is 0.004mol, then add 1.64ml of H to the solution 3 PO 4 , and then dropwise added 15M NH 4 The OH solution adjusted the pH value to 9, and aged in a high-pressure reaction ax at 100°C for 6 hours. Then 0.5g of HAPTi particles were immersed in 0.01M metal nitrate aqueous solution, the suspension was left at room temperature for 24h, filtered, washed with 1000-1500ml deionized water and dried in an oven at 70°C-100°C. Prepare HAPTiAg, HAPTiCu, HAPTiZn (HAPTiM). The UV-Vis diffuse reflectance and XR...
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The preparation process of hydroxyapatite with impured titanium and antibiotic ion includes the following steps: dissolving Ca(NO3)2 and Ti(SO4)2 in deionized water with CO2 in the Ti / (Ca+Ti) ratio of 0-0.3 and total amount of Ca and Ti in 0.1 mol; adding H3PO4in 0.060 mol to the solution and dropping15M NH4OH solution to regulate pH to 9; sealing the obtained suspension in PTFE container and ageing at 80-120deg.c for 6 hr; filtering to obtain the precipitate, washing with deionized water and drying the precipitate at 70-100deg.c to obtain HAPTi particle; soaking the particle in 0.001-0.1M water solution of metal nitrate to obtain suspension; setting the suspension at room temperature for 24 hr, filtering, washing with deionized water and stoving at 70-100deg.c to obtain HAPTiAg, HAPTiCu or HAPTiZn.
Description
technical field [0001] The invention relates to a preparation method of a photocatalyst, in particular to a preparation method of hydroxyapatite co-doped with titanium and antibacterial ions. Background technique: [0002] TiO 2 Photocatalytic killing of harmful microorganisms such as bacteria, viruses and cancer cells has been extensively studied. A large number of studies have confirmed that heterogeneous photocatalysis has great potential in sterilization and disinfection. This technology is still in the research stage of the laboratory, and has not been really applied in the actual drinking water disinfection. There are mainly the following problems: the powder catalyst is difficult to separate from the purified water body, and the immobilized catalyst is unstable and easy to fall off; the catalytic efficiency is low, and for the P25 titanium oxide suspension system with higher activity, in the actual wastewater treatment using solar energy, its The catalytic efficien...
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IPC IPC(8): A01N59/16
Inventor 胡春路国忠郭健
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI