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Graphene oxide/molecularly imprinted composite material, and preparation method and application thereof

A technology of molecular imprinting and composite materials, applied in the field of organic pollutant degradation, can solve problems such as degradation restriction

Active Publication Date: 2020-04-17
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when multiple pollutants are present in the solution, the degradation of trace pollutants, especially norfloxacin (NOR) at low concentrations, on the surface of the photocatalyst will be restricted

Method used

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  • Graphene oxide/molecularly imprinted composite material, and preparation method and application thereof
  • Graphene oxide/molecularly imprinted composite material, and preparation method and application thereof
  • Graphene oxide/molecularly imprinted composite material, and preparation method and application thereof

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preparation example Construction

[0047] The invention provides a preparation method of graphene oxide / molecularly imprinted composite material, comprising the following steps:

[0048] Mix template molecules, functional monomers and porogens for prepolymerization to obtain prepolymers;

[0049] Mixing the prepolymer, the first crosslinking agent, the initiator and BiOBr, and performing a polymerization reaction under protective atmosphere conditions to obtain the first polymer;

[0050] eluting the first polymer to obtain a molecularly imprinted polymer;

[0051] The molecularly imprinted polymer, graphene oxide, solvent and a second crosslinking agent are mixed for a crosslinking reaction to obtain a graphene oxide / molecularly imprinted composite material.

[0052] In the present invention, unless otherwise specified, all raw material components are commercially available products well known to those skilled in the art.

[0053] The invention mixes the template molecule, the functional monomer and the poro...

Embodiment 1

[0084] (1) Preparation of bismuth oxybromide (BiOBr):

[0085] 1mol Bi(NO 3 ) 3 Mix with 20mL ethylene glycol solution, and ultrasonically disperse for 30min under the condition of 400W to make Bi(NO 3 ) 3 Completely dissolved, Bi(NO 3 ) 3 Solution; mix 1mol CTAB and 20mL ethylene glycol solution, and ultrasonically disperse for 30min under the condition of 400W to completely dissolve CTAB to obtain CTAB solution;

[0086] The CTAB solution was added dropwise to the Bi(NO 3 )3 solution, stirred at room temperature for 2 h to mix thoroughly, placed the resulting mixed reaction solution in a stainless steel reactor with a polytetrafluoroethylene liner, and reacted at 160 ° C for 16 h. After the reaction was completed, it was naturally cooled to room temperature. Wash with ionic water and absolute ethanol for 3 times, vacuum-dry at 80°C for 12 hours, and pulverize in a mortar to obtain BiOBr (particle size 2-3.5 μm);

[0087] (2) Preparation of Molecularly Imprinted Polyme...

Embodiment 2

[0100] The graphene oxide / molecularly imprinted composite material was prepared according to the preparation method of Example 1, and the difference from Example 1 was that the amount of graphene oxide in step (4) was 0.17g respectively, and the obtained graphene oxide / molecularly imprinted composite material The loading of graphene oxide in the medium is 5%.

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Abstract

The invention provides a graphene oxide / molecularly imprinted composite material, and a preparation method and an application thereof, and belongs to the technical field of organic pollutant degradation. The preparation method of the graphene oxide / molecularly imprinted composite material comprises the following steps: mixing template molecules, a functional monomer and a pore-foaming agent, and carrying out a pre-polymerization reaction to obtain a prepolymer; mixing the prepolymer, a first cross-linking agent, an initiator and BiOBr, and carrying out a polymerization reaction under a protective atmosphere condition to obtain a first polymer; eluting the first polymer to obtain a molecularly imprinted polymer; and mixing the molecularly imprinted polymer, graphene oxide, a solvent and a second cross-linking agent, and carrying out a cross-linking reaction to obtain the graphene oxide / molecularly imprinted composite material. The prepared graphene oxide / molecularly imprinted compositematerial has excellent selective adsorption performance and photocatalytic performance, and is long in cycle life.

Description

technical field [0001] The invention relates to the technical field of organic pollutant degradation, in particular to a graphene oxide / molecularly imprinted composite material and its preparation method and application. Background technique [0002] Pharmaceutical and Personal Care Products (PPCPs) are a new type of environmental pollutants, mainly including two categories of drugs and personal care products, among which pharmaceutical pollutants mainly include antibiotics, hypnotic tranquilizers, morphine, etc. Analgesics, narcotics, anti-cancer and psychotropic prescription drugs, as well as antipyretic and analgesic drugs, antitussive and anti-cold drugs, digestive system drugs, skin diseases, nourishing drugs, vitamins, trace elements, and some anti-asthma drugs medicines, contraceptives, cardiovascular drugs and anti-infective drugs and other non-prescription drugs; personal care products cover cosmetics, skin care products, nursing care, sex products and daily cleanin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06B01J35/10B01J35/08B01J20/26C02F1/28C02F1/30B01J20/30C02F101/38C02F101/34
CPCB01J31/06B01J20/20B01J20/268C02F1/30C02F1/285C02F1/283C02F2305/10C02F2101/38C02F2101/34B01J35/51B01J35/613B01J35/635B01J35/647B01J35/39Y02W10/37
Inventor 张卫珂杨艳青邓钏张艳荣郭春丽吴玉程
Owner TAIYUAN UNIV OF TECH
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