Ultraviolet protection material based on hybrid luminescent diatomite and preparation method thereof
A protective material, diatomite technology, applied in the direction of luminescent materials, chemical instruments and methods, and other chemical processes, can solve problems such as adverse health effects, accelerated skin formation, yellowing of paper and plastics, and achieve increased fluorescence intensity and Fluorescence lifetime, reduced dosage, and cost-saving effects
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Embodiment 1
[0022] (1) Add 1g of acid-washed and purified diatomite to 30mL of toluene, then pipette 6mL of 3-aminopropyltrimethoxysilane (APTMS) and dissolve it in the above mixture, and put it into a pre-heated 110°C In the oil bath, set the stirring speed to 800 rpm, and reflux for 11 hours under a static dry nitrogen atmosphere. After the alkylation reaction is completed, after the alkylation-modified diatomite is collected by centrifugation, it is washed and centrifuged twice with toluene, and then washed with ethanol for five times to remove the toluene solvent and unreacted excess APTMS, and then placed in 80 °C in a forced air drying oven.
[0023] (2) Add 100 μL of 0.3mol / L EuCl to 50 mL of ethanol 3 Add 100 μL 0.9mol / L TTA ethanol solution to the ethanol solution, stir at room temperature for 2 hours, then add 100 μL 0.3mol / L Phen ethanol solution, adjust the pH of the reaction solution to 6-7, and stir for 3 hours to obtain metal europium - Solutions of organic complexes. Ad...
Embodiment 2
[0025] (1) Add 1g of acid-washed and purified diatomite to 30mL of toluene, then pipette 5mL of 3-aminopropyltriethoxysilane (APTES) and dissolve it in the above mixture, and put it into the pre-heated 100°C In an oil bath, set the stirring speed to 800 rpm, and reflux for 11 hours under a static dry nitrogen atmosphere. After the alkylation reaction is completed, after the alkylation-modified diatomite is collected by centrifugation, it is washed and centrifuged twice with toluene, and then washed with ethanol for five times to remove the toluene solvent and unreacted excess APTES, and then placed in 80 °C in a forced air drying oven.
[0026] (2) Add 100 μL of 0.3mol / L EuCl to 50 mL of ethanol 3 Add 100 μL 0.9mol / L TTA ethanol solution to the ethanol solution, stir at room temperature for 2 hours, then add 100 μL 0.3mol / L Phen ethanol solution, adjust the pH of the reaction solution to 6-7, and stir for 3 hours to obtain metal europium - Solutions of organic complexes. Ad...
Embodiment 3
[0028] (1) Add 1 g of roasted and purified diatomaceous earth to 30 mL of toluene, then pipette 6 mL of 3-aminopropyltrimethoxysilane (APTMS) and dissolve it in the above mixture, and put it into the oil heated at 90 °C in advance In the bath, set the stirring speed to 800 rpm, and reflux for 11 hours under a static dry nitrogen atmosphere. After the alkylation reaction is completed, after the alkylation-modified diatomite is collected by centrifugation, it is washed and centrifuged twice with toluene, and then washed with ethanol for five times to remove the toluene solvent and unreacted excess APTMS, and then placed in 80 °C in a forced air drying oven.
[0029] (2) Add 100 μL of 0.03mol / L EuCl to 5 mL of ethanol 3 Add 100 μL 0.09mol / L Hntac ethanol solution to the ethanol solution, stir at room temperature for 5 hours, then add 100 μL 0.03mol / L Bipy ethanol solution, adjust the pH of the reaction solution to 6-7, and stir for 3 hours to obtain metal europium - Solutions o...
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