Metal loaded activated carbon modified silk protein porous membrane and preparation and application methods thereof

Abstract

The invention provides a metal loaded activated carbon modified silk protein porous membrane and preparation and application methods thereof. The metal loaded activated carbon modified silk protein porous membrane is composed of silk protein and loofah sponge sheet-like activated carbon materials loaded with gold, platinum, palladium, titanium, iron, manganese or cerium. The preparation process ofthe metal loaded activated carbon modified silk protein porous membrane comprises processing the peripheral fiber of loofah sponge into sheets, performing pretreatment through dilute alkali, and thoroughly immersing the raw materials into sugar alcohol solution containing metal salt; inletting nitrogen into the solution to form tiny bubble clusters, performing immersion treatment, extracting andthen squeezing the materials to remove superfluous sugar alcohol solution, and performing drying, curing and high-temperature carbonization treatment to obtain loofah sponge sheet-like activated carbon materials; mixing the loofah sponge sheet-like activated carbon materials with the silk protein solution; performing electrophoresis treatment to obtain hydrogel, freeze-drying the hydrogel in vacuum to obtain the metal loaded activated carbon modified silk protein porous membrane. The prepared metal loaded activated carbon modified silk protein porous membrane achieves absorption, oxidation catalysis and protein immobilization, and is significant in processing effects and free from the potential risk of secondary pollution.

Description

technical field [0001] The invention belongs to the technical field of textile materials, and in particular relates to a metal-loaded activated carbon-modified silk protein porous membrane and a preparation method and application thereof. Background technique [0002] Indoor space is the place where most people live and work. The quality of indoor air is closely related to human health. The main components of gaseous pollutants in the indoor environment are formaldehyde, benzene series and ammonia. Among them, the main hazard of formaldehyde is to Skin and mucous membrane irritation, when formaldehyde reaches 0.1mg / m indoors 3 Above, it will cause red and itchy eyes, throat discomfort, chest tightness, asthma and other problems, and formaldehyde will also react with ionic chlorides in the air to produce carcinogen dichloromethyl ether, which seriously endangers human health. [0003] At present, the main methods used to eliminate formaldehyde are ventilation, adsorption, pl...

AI Technical Summary

Problems solved by technology

It can be seen from the above prior art that by adding noble metal active substances into high molecular polymers, fibrous materials with the function of catalyzing formaldehyde can be prepared through spinning process and post-treatment process, but the cost of noble metals is relatively high, and the preparation is low-cost, High-efficiency and long-lasting formaldehyde catalytic oxidation materials at room temperature still need further research

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