Nanofiber filtering protective material with photocatalytic detoxification function and preparation method thereof
A technology with nanofiber and detoxification function, which is applied in the field of nanofiber filter protective material and its preparation, can solve the problems of difficult large-scale production, long time-consuming, cumbersome preparation process, etc., achieve efficient adsorption and degradation, shorten reaction time, and improve filtration efficiency effect
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[0035] The invention provides a method for preparing a nanofiber filter protective material with photocatalytic detoxification function, comprising the following steps:
[0036] S1. Add trimesic acid, monovalent transition metal salt and rare earth metal inorganic salt into the first solvent according to the preset molar ratio, after fully reacting, centrifuge, wash and dry to obtain a spiny metal organic framework; The spine-shaped metal-organic framework is calcined at high temperature to obtain sea urchin-like oxide spines;
[0037] S2. Disperse the nanofibers in the second solvent to obtain a nanofiber suspension; then add the sea urchin-like oxide thorn balls obtained in step S1 into the nanofiber suspension, and obtain a composite suspension after fully dispersing; Loading the composite suspension on the surface of the non-woven fabric to obtain a sea urchin-like oxide and nanofiber inorganic-organic hybrid film;
[0038] S3. Deposit nano-titanium dioxide on the surface...
Embodiment 1
[0046] This embodiment provides a method for preparing a nanofiber filter protection material with photocatalytic detoxification function, including the following steps:
[0047] S1. Dissolve trimesic acid, silver nitrate and europium nitrate in a mixed solvent of deionized water and ethanol at a molar ratio of 3:1:1, react at room temperature for 2 hours, perform centrifugation, and add absolute ethanol After standing for 3 hours, the thorn-shaped metal-organic framework (Eu-MOFs) was obtained after drying; then the thorn-shaped metal-organic framework was heated up to 500°C at a heating rate of 10°C / min, and after high-temperature calcination for 2 hours, the sea urchin-shaped oxide thorn was obtained. Ball (Eu 2 o 3 -C).
[0048] S2. Disperse the ethylene-vinyl alcohol copolymer nanofibers in a mixed solvent of isopropanol and water, and form a stable and uniform nanofiber suspension under the shear action of a high-speed emulsifier and the action of ultrasound; then the ...
Embodiment 2～9
[0058] Examples 2-9 respectively provide a method for preparing a nanofiber filter protection material with photocatalytic detoxification function. Compared with Example 1, the difference is that the corresponding preparation parameters in steps S1-S3 are changed. The specific parameters corresponding to each embodiment are shown in Table 1, and the rest of the steps are consistent with Embodiment 1, and will not be repeated here.
[0059] The corresponding preparation parameter of table 1 embodiment 2~9
[0060]
[0061] It can be found that the nanofiber filter protective material with photocatalytic detoxification function prepared in Examples 2 to 9 has the same protective effect as that obtained in Example 1. With a similar structure of materials, each embodiment can improve the adsorption effect on fine particles while realizing the photocatalytic detoxification function, thereby improving the filtration efficiency. It shows that the appropriate adjustment of the cor...
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