Preparation method and application of a molecularly imprinted composite sponge membrane for selective separation of emodin

A composite sponge and molecular imprinting technology, which is applied in the fields of semipermeable membrane separation, chemical instruments and methods, membrane technology, etc., can solve the problems of small flow rate and low flow rate of molecular imprinted membranes, and achieve difficult recovery, high flow rate, and improved utilization rate effect

Active Publication Date: 2019-11-05
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the technical defects existing in the prior art, solve the problems of small flow and low flow rate of traditional molecularly imprinted membranes, and greatly improve the separation efficiency of target molecules (emodin)

Method used

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  • Preparation method and application of a molecularly imprinted composite sponge membrane for selective separation of emodin
  • Preparation method and application of a molecularly imprinted composite sponge membrane for selective separation of emodin
  • Preparation method and application of a molecularly imprinted composite sponge membrane for selective separation of emodin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] S1. Preparation of graphene oxide modified sponge membrane

[0045] First, the commercially available melamine sponge was cut into thin slices (15 mm×7 mm×5 mm), soaked in deionized water and ethanol for ultrasonic cleaning; then, 10 pieces of cleaned melamine sponge membranes were soaked in 50 mL concentration 1 mg / mL graphene oxide solution, ultrasonic treatment for 30 min; thereafter, the impregnated sponge membrane was taken out, centrifuged at 3000 rpm for 1 min, and dried at 60°C to obtain graphite oxide olefin modified sponge membranes (GO@MSMs). The resulting GO@MSMs scan is similar to the GO@MSMs scan in Example 2, by figure 1 (a) It can be seen that graphene oxide sheets are successfully loaded in the sponge skeleton.

[0046] S2, preparation of activated composite sponge membrane

[0047] First, 6 sheets of graphene oxide-modified sponge membranes (GO@MSMs) obtained in step 1 were immersed in a mixed solution of 100 mL ethanol and water (ethanol: water = 8...

Embodiment 2

[0054] S1. Preparation of graphene oxide modified sponge membrane

[0055] First, the commercially available melamine sponge was cut into thin slices (15 mm×7 mm×5 mm), soaked in deionized water and ethanol for ultrasonic cleaning; then, 10 pieces of cleaned melamine sponge membranes were soaked in 50 mL concentration 2.6 mg / mL graphene oxide solution, ultrasonic treatment for 30 min; thereafter, the impregnated sponge membrane was taken out, centrifuged at 3000 rpm for 1 min, and dried at 60°C to obtain graphene oxide Modified sponge membranes (GO@MSMs). The obtained GO@MSMs scan image is as follows figure 1 As shown in (a), it can be seen that graphene oxide sheets are successfully loaded in the sponge skeleton.

[0056] S2, preparation of activated composite sponge membrane

[0057] First, 6 sheets of graphene oxide-modified sponge membranes (GO@MSMs) obtained in step 1 were immersed in a mixed solution of 100 mL ethanol and water (ethanol: water = 80 mL: 20 mL), and the...

Embodiment 3

[0064] S1. Preparation of graphene oxide modified sponge membrane

[0065]First, the commercially available melamine sponge was cut into thin slices (15 mm×7 mm×5 mm), soaked in deionized water and ethanol for ultrasonic cleaning; then, 10 pieces of cleaned melamine sponge membranes were soaked in 50 mL concentration 5 mg / mL graphene oxide solution, sonicated for 30 min; thereafter, the impregnated sponge membrane was taken out, centrifuged at 3000 rpm for 1 min, and dried at 60°C to obtain graphite oxide olefin-modified sponge membranes (GO@MSMs). The resulting GO@MSMs scan is similar to the GO@MSMs scan in Example 2, by figure 1 (a) It can be seen that graphene oxide sheets are successfully loaded in the sponge skeleton.

[0066] S2, preparation of activated composite sponge membrane

[0067] First, 6 sheets of graphene oxide-modified sponge membranes (GO@MSMs) obtained in step 1 were immersed in a mixed solution of 100 mL ethanol and water (ethanol: water = 80 mL: 20 mL)...

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Abstract

The invention discloses a preparation method of an emodin-separating molecularly imprinted composite sponge membrane, and belongs to the technical field of functional material preparation. The preparation method is specifically as follows: with melamine sponge membrane as a basement membrane, emodin as a template molecule, acrylamide as a functional monomer, ethylene glycol dimethacrylate as a cross-linking agent and azobisisobutyronitrile as an initiator, through combination of a graphene oxide surface modifying technology and a molecular imprinting polymerization technology, the emodin-separating molecularly imprinted composite sponge membrane is prepared. Selective adsorption experiments are used for studying the selective adsorption capacity of the prepared emodin-separating molecularly imprinted composite sponge membrane; selective penetration experiments are used for studying the capacity of the prepared emodin-separating molecularly imprinted composite sponge membrane in selectively penetrating a target (emodin) and non-targets (aloe emodin and emodin methyl ether). Results show that the emodin-separating molecularly imprinted composite sponge membrane prepared by the preparation method provided by the invention has a relatively high specific emodin recognizing capacity and a relatively high emodin adsorbing separation capacity.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional materials, and in particular relates to a preparation method and application of a molecularly imprinted composite sponge membrane for selectively separating emodin. Background technique [0002] Emodin is well known as a traditional laxative in oriental countries. In the past few decades, it has also shown good effects in the field of anti-cancer. Emodin is an anthraquinone derivative, mainly derived from rhubarb, aloe, buckthorn and other plants. Emodin extracted from plants often coexists with its analogues (aloe-emodin, emodin methyl ether, etc.) in large quantities. The existing methods for separating emodin from analogues are mainly distillation and extraction methods, which often have disadvantages such as poor selectivity and difficulty in separating a single class of molecules from analogues. [0003] Molecular imprinting technology is a technology developed in recent ye...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/40C08J9/26B01D69/12B01D67/00B01J20/26B01J20/30C08L61/28
CPCB01D67/0079B01D69/12B01J20/20B01J20/26B01J2220/4806B01J2220/4812C08J9/26C08J9/40C08J9/405C08J2201/0422C08J2361/28
Inventor 卢健秦莹莹闫永胜王良
Owner JIANGSU UNIV
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