Magnetic corncob hierarchical porous carbon microsphere surface imprinting material and preparation method and applications thereof

Abstract

The invention discloses a preparation method of a magnetic corncob hierarchical porous carbon microsphere surface imprinting material. Corncob is taken as the carbon source to prepare a biomass carbon microsphere; sodium hydroxide is taken as an activator; a certain amount of nicotinamide and 1-(3-hydroxyl-n-propyl) cyclopentanol is added; the prepared corncob hierarchical porous carbon microsphere is taken as a stabilizing agent of Pickering emulsion; 4-chlorophenol (4-CP) is taken as a template molecule, toluene is taken as a pore forming agent and an organic solvent; ethylene glycol dimethacrylate (EGDMA) is taken as a crosslinking agent, 4-vinyl pyridine is taken as a functional monomer, EGDMA and 4-vinyl pyridine are mixed, the mixture is taken as an oil phase; the corncob hierarchical porous carbon microsphere and 2,2-diazobis(2-methylpropionamidine) dihydrochloride are added into water and evenly dispersed to prepare a water phase; the oil phase and the water phase are mixed and processed by ultrasonic waves to prepare stable Pickering emulsion; and then Pickering emulsion polymerization is carried out to prepare the magnetic corncob hierarchical porous carbon microsphere surface imprinting material, which can be applied to selective identification and separation of 4-chlorophenol in a water environment.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, and more specifically relates to a magnetic corncob hierarchical porous carbon microsphere surface imprinted material and a preparation method and application thereof. Background technique [0002] In recent years, with the widespread use of pesticides, phenolic fine chemical raw material preservatives, and antioxidants in industrial and agricultural production, phenolic environmental endocrine disruptors (Phenolic Environmental Endocrine Disruptors, PEEDs), such as pentachlorophenol, Polychlorinated phenols such as chlorophenols, trichlorophenols, and bisphenols are seriously polluted, especially the extensive use of pesticides, which aggravates the water pollution of PEEDs. However, the tracking research on environmental endocrine disruptors started relatively late in China. For PEEDs with complex components, similar properties and low content, the rapid, sensitive, targeted and ef...

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Problems solved by technology

[0003] At present, there are many treatment methods for PEEDs organic pollutants, and traditional water treatment technologies cannot meet the needs of advanced treatment at all.

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