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

Cyclodextrin nanocluster modified graphene membrane material and its preparation method for removing bisphenol A pollutants in water

A graphene membrane and nano-cluster technology, applied in water pollutants, water/sewage treatment, adsorbed water/sewage treatment, etc., can solve the problem of water treatment membrane materials, complicated separation, cumbersome separation, etc. Problems such as slow water purification

Active Publication Date: 2021-05-14
NANJING UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when cyclodextrin is used as an adsorbent, it has the disadvantages of slow water purification and complicated separation.
So far, no water treatment membrane material has been found that can remove BPA pollutants in water ultra-fast and efficiently and easily.

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
  • Cyclodextrin nanocluster modified graphene membrane material and its preparation method for removing bisphenol A pollutants in water
  • Cyclodextrin nanocluster modified graphene membrane material and its preparation method for removing bisphenol A pollutants in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1. Preparation of a graphene membrane material modified by cyclodextrin nanoclusters.

[0045] Using the Staudenmaier method (see Poh HL, F, Ambrosi A, et al.Graphenes prepared by Staudenmaier, Hofmann and Hummers methods with consequent thermalexfoliation exhibit very different electrochemical properties[J].Nanoscale, 2012, 4(11): 3515-3522.) prepare graphene oxide dispersion liquid, Adjust the dispersion to a solid content of 0.5 mg / mL. Take 0.5g of monoamino-modified Y-cyclodextrin and mix it with 200mL of graphene oxide dispersion, and ultrasonically treat it for 0.5h to make it evenly mixed. The above mixture was heated to 100° C. for 16 h under stirring. Then, 10 mL of hydrazine hydrate was added to the reaction system, and the reaction was stirred at 100° C. for 24 h. The obtained mixture is filtered and washed several times, and the obtained solid is dispersed in water again, and filtered through a microporous filter membrane to form a cyclodextrin...

Embodiment 2

[0047] Embodiment 2. Preparation of a graphene membrane material modified by cyclodextrin nanoclusters.

[0048] Using Brodie's method (see Botas C, P, Blanco P, et al.Graphene materials with different structures prepared from the same graphite by the Hummers and Brodie methods [J].Carbon, 2013, 65: 156-164.) prepare the graphene oxide dispersion, adjust the dispersion to The solid content is 5.0 mg / mL. Take 2.0 g of monoamino-modified a-cyclodextrin and mix it with 200 mL of graphene oxide dispersion, and ultrasonicate for 0.5 h to make it evenly mixed. The above mixture was heated to 80°C for 8h under stirring. Then, 20 mL of hydrazine hydrate was added to the reaction system, and the reaction was stirred at 100° C. for 24 h. The obtained mixture is filtered and washed several times, and the obtained solid is dispersed in water again, and filtered through a microporous filter membrane to form a cyclodextrin-modified graphene membrane material on the filter membrane.

[...

Embodiment 3

[0050] Embodiment 3. Preparation of a graphene membrane material modified by cyclodextrin nanoclusters.

[0051] With the improved Hummers method (see Hummers WS, Offeman RE. Preparation of graphitic oxide. J Am Chem Soc 1958; 80: 1339; and. Zhou H, Yao W, Li G, Wang J, Lu Y. 4-ethylenedioxythiophene) hydrogel with excellent mechanical performance and high conductivity. Carbon 2013; 59: 495-502.) prepared a graphene oxide dispersion, and adjusted the dispersion to a solid content of 2.5 mg / mL. Take 1.0 g of monoamino-modified β-cyclodextrin and mix it with 200 mL of graphene oxide dispersion, and ultrasonicate for 0.5 h to make it evenly mixed. The above mixture was heated to 100° C. for 24 h under stirring. Then, 20 mL of hydrazine hydrate was added to the reaction system, and the reaction was stirred at 100° C. for 24 h. The obtained mixture is filtered and washed several times, and the obtained solid is dispersed in water again, and filtered through a microporous filter m...

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
solid contentaaaaaaaaaa
solid contentaaaaaaaaaa
solid contentaaaaaaaaaa
Login to View More

Abstract

A cyclodextrin nanocluster modified graphene membrane material, which uses graphene as a carrier, cyclodextrin is connected on the graphene sheet by a method of functional group reaction, and at the same time self-assembles on the graphene surface to form nanoclusters , the graphene is obtained by reducing various types of graphene oxide through various methods, and the cyclodextrin is α, β, γ cyclodextrin substituted by various functional groups. Graphene provides a carrier for cyclodextrin nanoclusters and provides a channel for water filtration, so that cyclodextrin can fully exert its adsorption effect on bisphenol A, and at the same time make the whole removal process simple and fast; while the graphene membrane itself has The nanofiltration effect also greatly improved the removal efficiency of bisphenol A. The invention discloses its preparation method.

Description

technical field [0001] The invention relates to a graphene membrane material modified by cyclodextrin nano-clusters, in particular to a water treatment membrane material capable of superfast and efficient removal of bisphenol A in water. Background technique [0002] Bisphenol A compounds are used industrially to synthesize materials such as polycarbonate and epoxy resin, and are used as plastic additives to manufacture various plastic products, ranging from mineral water bottles, medical equipment to the inner wall of food packaging containers, etc. its figure. However, when these compounds are ingested by the human body, they will cause endocrine disorders, especially serious adverse effects on the development of the brain and reproductive system of infants. Cancer and obesity caused by metabolic disorders are also considered to be related to this. Therefore, how to quickly, efficiently and easily remove bisphenol A compounds in water is receiving more and more attention ...

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): B01D71/02B01D67/00B01J20/24C02F1/28C02F1/44C02F101/34
CPCB01D67/0039B01D71/021B01J20/24C02F1/286C02F1/44C02F2101/345
Inventor 陆云厉宝岩严韩
Owner NANJING 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