A kind of photoelectric catalytic anode material and treatment method for removing phthalates

Abstract

The invention relates to a photoelectric catalytic anode material and a treatment method for removing phthalates. The photoelectric catalytic anode material is synthesized in three steps: first, the pseudo-template molecules are modified on the surface of silica microspheres or polystyrene microspheres , and then arrange the modified microspheres into a three-dimensional array of opal structure by self-assembly method, and finally fill the gap between the microspheres with the titanium dioxide sol-gel precursor, and remove the pseudo-template and microspheres by high-temperature annealing, and form titanium dioxide crystals at the same time . This pseudo-template imprinted titania photoelectrocatalytic anode material was used for the removal of phthalate pollutants. Compared with the prior art, the photoelectric catalysis anode material prepared by the invention has special affinity for phthalate pollutants, and can realize the preferential removal of phthalates. In a complex system, complete removal of phthalates can be achieved even under the interference of a thousand times the concentration of natural organic matter.

Description

technical field [0001] The invention belongs to the technical field of self-assembly electrodes of energy, environment and nanometer materials, and relates to a pseudo-template sacrificial method for preparing a photoelectrocatalytic anode material and a treatment method for photocatalytically removing phthalate pollutants. Background technique [0002] Since the 20th century, environmental issues have been a hot topic of concern. As an inexhaustible and inexhaustible energy source, solar energy has been vigorously developed and applied by researchers in the environmental field. However, the direct use of photocatalysis for water pollution treatment will be affected by the high recombination rate of electrons and holes, resulting in a decrease in photon quantum efficiency. Therefore, people have developed a photocatalytic method on this basis. Under a certain bias voltage, the photoexciton has directional migration, thereby reducing the recombination of photogenerated elect...

AI Technical Summary

Problems solved by technology

This leads to the waste of a large amount of photoelectric energy on the treatment of these low-toxicity and high-concentration natural organic matter, while the really highly toxic trace phthalate pollutants still remain in the water body, maintaining high environmental toxicity

[0004] Molecular imprinting technology usually has good selective adsorption and recognition capabilities. However, traditional molecularly imprinted polymer materials are not suitable as photoelectrocatalytic materials because these organic materials have poor photocatalytic activity and are easily lost under the attack of hydroxyl radicals. issues of recognition

Although some inorganic molecular imprints can maintain good photocatalytic activity, their recognition types are too single and can only remove specific pollutants.

However, pollutants with similar structures often have very similar environmental toxicological effects

This shows that the great challenge facing the current environmental photocatalytic materials is how to simultaneously identify and enrich the photocatalytic materials for a class of pollutants with similar chemical structures.

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