Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of preparation method and application of graphene oxide-based cadmium ion imprinted polymer

A technology of ion imprinting and alkenyl cadmium, applied in the direction of chemical instruments and methods, water pollutants, and other chemical processes, to achieve the effects of multiple times of repeated use, improved adsorption capacity, and simple operation

Inactive Publication Date: 2017-10-20
JIANGSU UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the microemulsion system, using graphene oxide as the matrix, using the method of RAFT polymerization, the study of the characteristic imprinted polymer of polymethyl acrylate imprinted with cadmium ion has not been reported yet.

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
  • A kind of preparation method and application of graphene oxide-based cadmium ion imprinted polymer
  • A kind of preparation method and application of graphene oxide-based cadmium ion imprinted polymer
  • A kind of preparation method and application of graphene oxide-based cadmium ion imprinted polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of graphene oxide

[0036] In a 250mL beaker, add 23mL of 98% concentrated sulfuric acid and place in an ice-water bath. Then, under stirring condition, add 1g colloidal graphite powder and 0.5g sodium nitrate. Then under strong stirring, slowly add 3g of potassium permanganate, keep the temperature below 20°C during the reaction; then remove the ice-water bath, raise the temperature to 35°C, and continue the reaction for 30min. Under stirring conditions, slowly add 46mL deionized water, and raise the temperature to 98°C, the solution turns brown, and react for 15min; then add about 140mL of 60°C hot deionized water and 4.5mL of 30% hydrogen peroxide until the reaction is completed It is brownish yellow in color. Finally, through centrifugation, first wash with 5% hydrochloric acid until there is no sulfate group, then wash with deionized water until neutral, and finally process by ultrasonic treatment and dry at 50°C to obtain graphene oxide.

[0037...

Embodiment 2

[0044] (1) Preparation of graphene oxide

[0045] In a 250mL beaker, add 23mL of 98% concentrated sulfuric acid and place in an ice-water bath. Then, under stirring condition, add 1g colloidal graphite powder and 0.5g sodium nitrate. Then under strong stirring, slowly add 3g of potassium permanganate, keep the temperature below 20°C during the reaction; then remove the ice-water bath, raise the temperature to 35°C, and continue the reaction for 30min. Under stirring conditions, slowly add 46mL deionized water, and raise the temperature to 98°C, the solution turns brown, and react for 15min; then add about 140mL of 60°C hot deionized water and 4.5mL of 30% hydrogen peroxide until the reaction is completed It is brownish yellow in color. Finally, through centrifugation, first wash with 5% hydrochloric acid until there is no sulfate group, then wash with deionized water until neutral, and finally process by ultrasonic treatment and dry at 50°C to obtain graphene oxide.

[0046...

Embodiment 3

[0054] (1) Preparation of graphene oxide

[0055] In a 250mL beaker, add 23mL of 98% concentrated sulfuric acid and place in an ice-water bath. Then, under stirring condition, add 1g colloidal graphite powder and 0.5g sodium nitrate. Then under strong stirring, slowly add 3g of potassium permanganate, keep the temperature below 20°C during the reaction; then remove the ice-water bath, raise the temperature to 35°C, and continue the reaction for 30min. Under stirring conditions, slowly add 46mL deionized water, and raise the temperature to 98°C, the solution turns brown, and react for 15min; then add about 140mL of 60°C hot deionized water and 4.5mL of 30% hydrogen peroxide until the reaction is completed It is brownish yellow in color. Finally, through centrifugation, first wash with 5% hydrochloric acid until there is no sulfate group, then wash with deionized water until neutral, and finally process by ultrasonic treatment and dry at 50°C to obtain graphene oxide.

[0056...

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

PropertyMeasurementUnit
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
adsorption capacityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method and application of an oxidized graphene based cadmium ion imprinted polymer and belongs to the field of new technology of environment function material preparation and water treatment. The preparation method includes: taking oxidized graphene as a substrate, Cd (II) as a template, methyl methacrylate (MMA) as monomer, cetyl trimethyl ammonium bromide (CTAB) as surfactant, azodiisobutyronitrile (AIBN) as initiator and S,S'-di(alpha, alpha'-dimethyl-alpha''-aceto) trithiocarbonate (BDAT) as RAFT auxiliary; performing reversible addition-fragmentation chain transfer (RAFT) polymerization in microemulsion to prepare a cadmium ion imprinted polymer composite material adsorbent taking oxidized graphene as the substrate. Performance in adsorbing Cd (II) is studied. The adsorbent has high selectivity to Cd (II) and large in adsorption capacity; the polymerization process can be controlled by controlling reactant ratio, and the preparation method is simple in operation and has wide application prospect in the environment field of sewage treatment.

Description

technical field [0001] The invention relates to a preparation method and application of a graphene oxide-based cadmium ion imprinted polymer, which belongs to the field of environmental functional material preparation and water treatment new technologies. Background technique [0002] With the rapid development of the economy, a large number of chemical reagents in the industrial and agricultural fields have been used in large quantities. Most of the surface water and groundwater in my country have been polluted to varying degrees. The pollutants mainly include heavy metals and organic substances. Among them, cadmium is one of the main heavy metal pollutants. one. Heavy metal cadmium can not only affect the growth and development of crops, but also cannot be biodegraded. The biological half-life in the organism is as long as 10-30 years. It can also endanger human health through bioaccumulation and eventually through the food chain. Combining with the sulfhydryl group of the...

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 Patents(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/62C02F101/20
Inventor 刘燕刘占超胡肖孟祥国
Owner JIANGSU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com