Antibacterial metal ion/titanium-supporting hydroxyapatite nanometer photocatalyst and preparation method thereof
A technology of titanium-loaded hydroxyapatite and antibacterial metal ions, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., and can solve problems such as lack of quick-acting properties, reduced use concentration, and unsuitable for commercialization. , to avoid residual chloride ions, reduce the number of washings, and reduce the loss rate
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Embodiment 1
[0034] The first step of preparation of antibacterial metal ion-loaded artificial zeolite
[0035] (1) Raw material formula
[0036] a. Silver nitrate (AgNO 3 )
[0037] b. Copper nitrate [Cu(NO 3 ) 2 ]
[0038] c. Zinc nitrate [Zn(NO 3 ) 2 ·6H 2 O]
[0039] d. Artificial zeolite
[0040] e. Deionized water
[0041] (2) Processing flow
[0042] The preparation process is as follows:
[0043] a. Preparation of silver nitrate (AgNO 3 ) aqueous solution: the AgNO 3 (1.7g, 0.01mol) was completely dissolved in 100ml of deionized water, and placed in a dark place for later use;
[0044] b. Preparation of copper nitrate Cu(NO 3 ) 2 Aqueous solution: Cu(NO 3 ) 2 (75g, 0.4mol) was dissolved in 200ml of deionized water, and placed in a dark place for later use;
[0045] c. Add 700ml of deionized water to the reaction kettle coated with polytetrafluoroethylene on the inner wall, and put the AgNO that has been standing for more than 1-2 hours 3 aqueous solution and Cu(...
Embodiment 2
[0077] (1) Material
[0078] a. Antibacterial metal ionic liquid
[0079] b. Hydroxyapatite nanomaterials sold in the market
[0080] c. Orthotitanate H 4 TiO 4 (Titanium dihydroxide Ti(OH) can also be used 2 , titanium trihydroxide H 3 TiO 3 , or a mixture of the three)
[0081] d. Nitric acid solution (2% concentration)
[0082] (2) Operation process
[0083] A. the antibacterial metal ionic liquid is prepared by the method described in Example 1;
[0084] b. The orthotitanate H 4 TiO 4 (2.32g, 0.024mol) was dissolved in 100ml of 2% nitric acid aqueous solution to prepare H 4 TiO 4 / nitric acid solution;
[0085] c. Adding hydroxyapatite nanomaterials procured from the market directly into H 4 TiO 4 / nitric acid solution, the molar ratio of control Ti / (Ca+Ti) is 0.2. After stirring at room temperature for 30 minutes, ultrasonic treatment was used for 30 minutes, and then aged for 24 hours, the solid was separated, dried, and ground to obtain titanium-loaded...
Embodiment 3
[0088] (1) Material
[0089] a. Antibacterial metal ionic liquid
[0090] b. [-OTiO-] aqueous sol
[0091] c. Calcium nitrate [Ca(NO 3 ) 2 ], diamine hydrogen phosphate [(NH 4 )H 2 PO 4 ],ammonia
[0092] (2) Operation process
[0093] A. the antibacterial metal ionic liquid is prepared by the method described in Example 1;
[0094] b. [-OTiO-] aqueous sol was prepared by the method described in Example 1;
[0095] c. Mix the prepared antibacterial metal ionic liquid with [-OTiO-] aqueous sol, the molar ratio of Metal / Ti is 1 / 5, and stir at 40°C for nearly 4-6 hours to obtain a metal ion-doped titanium dioxide aqueous solution Sol;
[0096] d. Add calcium nitrate [Ca(NO 3 ) 2 ], the molar ratio of controlling Ti / (Ca+Ti) is 0.26. (NH 4 )H 2 PO 4 Slowly added dropwise to "metal antibacterial ion / [-OTiO-] / Ca(NO 3 ) 2 In "mixed solution", the molar ratio of control (Ca+Ti) / P is 1.67-1.7;
[0097] e. Use ammonia water to adjust the pH value of the solution to a wea...
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