17beta-estradiol molecular imprinted silver-doped tio2 nanotube and preparation method thereof

Abstract

The invention provides a 17beta-estradiol molecular imprinted silver-doped TiO2 nanotube and a preparation method thereof. The material can selectively adsorb 17beta-estradiol and degrade 17beta-estradiol and is doped with silver to powerfully kill certain pathogenic microorganisms. The TiO2 nanotube comprises a TiO2 nanotube with two open ends, a molecular imprinting polymer and Ag simple substance, which are formulated in a mass ratio of 58:33:9, wherein the molecular imprinting polymer contains methacrylic acid, trimethylolpropane trimethylacrylate and azo-biscyanopentanoic acid, which are formulated in a mole ratio of 124:123:1, and the molecular imprinting polymer is loaded with carbonyl functional groups; the TiO2 nanotube is 90 nm in diameter, 600 nm in length, 0.51 cm3 / g in porosity and 290 m2 / g in specific surface area ; and the mole ratio of functional monomer methacrylic acid to template molecule 17beta-estradiol is 124:26. The 17beta-estradiol molecular imprinted silver-doped TiO2 nanotube has a good 17beta-estradiol adsorbing effect, can degrade 17beta-estradiol with high degradation rate up to 98%, can powerfully kill certain pathogenic microorganisms, and is significant in improving the quality of reclaimed water from sewage.

Description

technical field [0001] The invention relates to a photocatalytic nanotube, in particular to a molecularly imprinted functionalized and silver-doped 17β-estradiol molecularly imprinted silver-doped TiO 2 Nanotubes and methods of making the same. Background technique [0002] With the increase of population, the development of industrial and agricultural production and the increasingly serious pollution of the water environment, the available water resources in many areas have appeared crisis one after another, which has seriously restricted the development of society and economy. Sewage reuse is an important and indispensable measure to solve the shortage of water resources, and it is also an effective way with low cost and quick effect. Sewage reuse can not only alleviate the problem of water shortage, but also reduce pollution discharge, which is also of great significance to improve the quality of water environment. However, the health risks and ecological dangers in the...

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Problems solved by technology

However, this material also has some disadvantages that limit its wide application. One of the disadvantages is that the reactants must be adsorbed on TiO 2 Catalytic reactions can only occur on the surface. However, in the secondary effluent of urban sewage plants, low-concentration estradiol is often accompanied by other high-concentration pollutants. At this time, TiO 2 Photodegradation of pollutants will become purposeless, i.e. TiO 2 The target pollutant cannot be distinguished from other pollutants during adsorption, which will greatly reduce its removal effect on the target pollutant, which also greatly affects its use as a new type of catalytic material.

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