17 beta-estradiol molecular imprinting titanium dioxide (TIO2) NANO tube and preparation method thereof

Abstract

The invention provides a 17 beta-estradiol molecular imprinting titanium dioxide (TiO2) nano tube and a preparation method thereof. The TiO2 of molecular imprinting can perform selective adsorption and photocatalytic degradation on the 17 beta-estradiol in a water body. The molecular imprinting nano tube is formed by a TiO2 nano tube with holes at two ends and a molecular imprinting polymer, and the mass ratio of the TiO2 nano tube to the molecular imprinting polymer is 63 to 37. The molecular imprinting polymer is prepared by methacrylic acid, trimethylolpropane trimethyl acrylic ester and azo dicyano pentanoic acid according to the molar ratio of 124:123:1. Carbonyl function functional groups are imprinted on the molecular imprinting polymer. The diameter of the molecular imprinting TiO2 nano tube is 90nm, the length is 600nm, the porosity is 0.54cm3 / g, and the specific surface area is 300m2 / g. The molar ratio of functional monomer methyl acrylic to template molecule estradiol is 124 to 26. The invention further provides the preparation method and application of the 17 beta-estradiol molecular imprinting TiO2 nano tube. The 17 beta-estradiol molecular imprinting TiO2 nano tube is good in estradiol adsorption, has the degradation rate as high as 98%, and can play a positive role on improving sewage reuse water quality.

Description

technical field [0001] The invention relates to a photocatalytic nanotube, in particular to a 17β-estradiol molecularly imprinted TiO 2 Nanotubes and methods of making them. Background technique [0002] With the increase of population, the development of industrial and agricultural production, and the increasingly serious pollution of water environment, the available water resources in many areas have been in crisis one after another, seriously restricting the development of society and economy. Sewage reuse is an important and indispensable measure to solve the water resource crisis, and it is also an effective way with low cost and quick results. Sewage reuse can not only alleviate the shortage of water resources, but also reduce pollution discharge, which is also of great significance to improving the quality of water environment. In recent years, various emerging pollutants have been continuously detected in reused sewage, which has brought certain risks to the reuse ...

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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 concentrations of estrogen are often accompanied by other high concentrations of 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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