High-activity composite antibacterial spray and preparation method thereof
A compound antibacterial and high activity technology, applied in botany equipment and methods, fungicides, biocides, etc., can solve the problem of no synergistic antibacterial effect between carriers and antibacterial ions, short duration of sustained release, and poor dispersion of inorganic antibacterial agents Uniformity and other issues, to achieve stable and controllable release speed, good long-term stability, and long-lasting effects
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[0031] High activity compound antibacterial spray of the present invention and preparation method thereof, the preparation method of described antibacterial spray comprises the following steps:
[0032]1) Synthesis of zinc ion and silver ion co-doped bismuth tungstate nanoparticles by one-step hydrothermal method: mix 1-5mmol sodium oleate with 0.1-2mmol Bi(NO 3 ) 3 ·5H 2 O was added to deionized water, stirred for 0.2-2 hours, and then 0.01-2 mmol Zn(NO 3 ) 2 and 0.01-0.2 mmol AgNO 3 Added to the above mixture, magnetically stirred for 0.5-2 hours, and then 0.1-2mmol Na 2 WO 4 2H 2 O was added to the above solution, and magnetically stirred for 0.5-2 hours, and then the obtained mixed solution was added into a polytetrafluoroethylene reaction tank, and heated in water at 160-220° C. for 18-32 hours. Cool to room temperature, wash the obtained precipitate with n-hexane and ethanol for 3-6 times, dry at 50-80°C for 5-10 hours, and the powder obtained is bismuth tungstate...
Embodiment 1
[0037] 2.2mmol sodium oleate and 0.4mmol Bi(NO 3 ) 3 ·5H 2 O was added to 40ml deionized water, stirred for 0.3 hours, and then 0.01mmol Zn(NO 3 ) 2 and 0.01mol AgNO 3 Added to the above mixture, stirred for 0.5 hours, and then 0.4mmol Na 2 WO 4 2H 2 O was added to the above solution, stirred magnetically for 2 hours, and then the obtained mixed solution was added into a 50ml polytetrafluoroethylene reaction tank, and heated at 180°C for 18 hours. Cool to room temperature, wash the obtained precipitate with n-hexane and ethanol three times, and dry at 60°C for 5 hours to obtain a powder that is zinc ion and silver ion co-doped bismuth tungstate nanoparticles.
[0038] The prepared zinc ion and silver ion co-doped bismuth tungstate nanoparticles were milled by mechanical ball milling for 2 hours by mass fraction of 1% and mass fraction of 2% water glass powder (the molar ratio of silicon oxide to sodium oxide was 0.8:1), After uniform mixing, add deionized water with a ...
Embodiment 2
[0040] 4.4mmol sodium oleate and 0.8mmol Bi(NO 3 ) 3 ·5H 2 O was added to 40ml deionized water, stirred for 0.2 hours, and then 0.01mmol Zn(NO 3 ) 2 and 0.02mol AgNO 3 Added to the above mixture, stirred for 1 hour, and then 0.8mmol Na 2 WO 4 2H 2 O was added to the above solution, stirred by magnetic force for 1 hour, and then the obtained mixed solution was added into a 50ml polytetrafluoroethylene reaction tank, and heated at 200°C for 24 hours. Cool to room temperature, wash the obtained precipitate with n-hexane and ethanol for 6 times, dry at 70°C for 8 hours, and then dry the obtained powder to be zinc ion and silver ion co-doped bismuth tungstate nanoparticles.
[0041] The prepared bismuth tungstate nanoparticles co-doped with zinc ions and silver ions were milled by mechanical ball milling for 1 hour according to the water glass powder with a mass fraction of 2% and a mass fraction of 5% (the molar ratio of silicon oxide to sodium oxide was 1:1) , after unifo...
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