Preparation method of phenolic aldehyde imprinted resin microparticles

Abstract

The invention provides phenolic aldehyde imprinted resin microparticles. The phenolic aldehyde imprinted resin microparticles are prepard from the following raw materials in percentage by mass: 8 to 12 percent of a catalyst-NaOH, 45 to 55 percent of phenol, 30 to 40 percent of formaldehyde, 3 to 7 percent of a cross-linking agent, an appropriate amount of a pore-forming agent and an appropriate amount of template molecules. The phenolic aldehyde imprinted resin microparticles prepared by utilizing a method provided by the invention have a high selective adsorption effect, the adsorption rate on copper ions under the condition that other higher-concentration ions coexist can be up to 90 percent or above, and the adsorption rate on other heavy metal ions is less than 15 percent.

Description

technical field [0001] The invention relates to the technical field of chemical materials, in particular to a phenolic imprinted resin particle and a preparation method thereof. Background technique [0002] A large amount of wastewater containing heavy metal ions, especially wastewater containing copper ions, is discharged from various industrial production processes. It is highly toxic and easily enriched by organisms. It is difficult to treat and it is impossible to selectively recover copper ions in wastewater. In order to effectively remove and recover copper ions in wastewater, a selective adsorption material needs to be explored. Phenolic resin microspheres are the earliest and widely used polymer materials due to the advantages of easy-to-obtain raw materials and simple synthesis methods. It has the ability of ion exchange due to the weak dissociation of phenolic hydroxyl groups in the resin, and phenolic resin microspheres Resin microspheres have a large specific s...

AI Technical Summary

Problems solved by technology

This method utilizes the chelating effect of functional groups on metal ions, but because general functional groups do not have specific chelating effects on metal ions, its selectivity is relatively limited, except for bases with weak coordination ability. In addition to the poor adsorption of metal ions, it also has adsorption effects on transition metals or heavy metals, which brings difficulties to the recovery of heavy metals

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