Mesoporous silicon composite lead ion imprinted polymer and its preparation method and use

An ion imprinting and compound lead technology is applied in the preparation of materials, the application of dynamic adsorption of lead ions, and the preparation of mesoporous material compound lead ion imprinted polymers to achieve rapid preparation, solve uneven distribution of imprinting sites, and solve pore channels. blocking effect

Active Publication Date: 2014-11-26
JIANGSU UNIV OF SCI & TECH
View PDF2 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the method of combining molecular imprinting technology and cocondensation method to prepare mesoporous silicon composite lead ion imprinted polymer has not been reported yet.
In addition, most of the existing research on imprinted polymer materials focuses on the study of their static properties, which has great limitations in the actual application process. In order to guide practical applications, dynamic separation and detection research is very necessary for continuous flow systems

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mesoporous silicon composite lead ion imprinted polymer and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) (Pb(NO 3 ) 2 ) and APTES, dissolved in 25mL deionized water, wherein the concentration of Pb(II) in the control solution was 4mmol / L, and the concentration of APTES was 16mmol / L, stirred for 2h; 0.2gCTAB was dissolved in 25mL deionized water, and ultrasonically After 1h, add to the above solution, mix and stir for 1h;

[0026] (2) Adjust the pH of the mixed solution obtained in step (1) to 8.0 with 2mol / L sodium hydroxide aqueous solution, and after stirring for 1 hour, add TEOS dropwise under the condition of 300rpm mechanical stirring, control the concentration of TEOS to 4 mmol / L, add dropwise After completion, mix and stir for 2h;

[0027] (3) Put the solid-liquid mixture obtained in step (2) into a 100mL high-temperature reactor, and place the reactor in an oven at 100°C for 48 hours;

[0028] (4) The solid product is collected by filtration, washed with a large amount of water, and then the template agent CTAB and the template lead ion are eluted with a mix...

Embodiment 2

[0036] (1) Pb(NO 3 ) 2 and AAPTS, dissolved in 25mL deionized water, in which the concentration of Pb(II) in the control solution was 40mmol / L, the concentration of AAPTS was 160mmol / L, and stirred for 2h to obtain; 2.0g CTAB was dissolved in 25mL deionized water, 40°C After ultrasonication for 1h, add to the above solution, mix and stir for 1h;

[0037] (2) Adjust the pH of the mixed solution obtained in step (1) to 12.0 with 2mol / L aqueous sodium hydroxide solution, and after stirring for 1 hour, add TEOS dropwise under 500rpm mechanical stirring conditions, control the concentration of TEOS to 400mmol / L, and complete the dropwise addition Afterwards, mix and stir for 2h;

[0038] (3) Put the solid-liquid mixture obtained in step (2) into a 100mL high-temperature reactor, and place the reactor in an oven at 150°C for 96 hours;

[0039] (4) The solid product was collected by filtration and washed with a large amount of water. Then, the template agent CTAB and template lea...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a mesoporous silicon composite lead ion imprinted polymer and its preparation method and use, and belongs to the technical field of material preparation and separation. The mesoporous silicon composite lead ion imprinted polymer is prepared from hexadecyl trimethyl ammonium bromide as a template, lead ions as template ions, aminopropyltriethoxysilane or N-aminoethyl-gamma-aminopropyltrimethoxysilane as a functional monomer, tetraethyl orthosilicate as a cross-linking agent and 2mol / L of a sodium hydroxide aqueous solution as an initiator. A selective dynamic adsorption experiment on selective recognition performances of the ion imprinted polymer proves that the mesoporous silicon composite lead ion imprinted polymer obtained by the preparation method has excellent lead ion identification performances.

Description

technical field [0001] The invention belongs to the technical field of material preparation and separation, and relates to a preparation method of a material for dynamically adsorbing lead ions in an aqueous solution, in particular to the preparation of a mesoporous material composite lead ion imprinted polymer and the application of dynamically adsorbing lead ions. Background technique [0002] With the development of the global economy and society, the wastewater discharged from mining, electroplating, paint, battery and other industries contains a large amount of lead ions, which will bring great harm to human health, animal and plant growth. Therefore, it is of great significance to establish a reliable method for the separation and determination of lead in environmental samples. At present, the separation and detection methods for environmental metal pollutants mainly include precipitation method, liquid-liquid extraction method, ion exchange method, solid phase extract...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/26C08J9/26B01J20/285G01N1/34
Inventor 刘占超胡兆勇高延敏孟祥国
Owner JIANGSU UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap