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

Preparation method for copper ferricyanide/multi-walled carbon nanotube hybrid material with core-shell structure and application of material in adsorption of cesium ions

A technology of multi-walled carbon nanotubes, copper ferricyanide, applied in chemical instruments and methods, ion exchange column/bed methods, nanotechnology for materials and surface science, etc., can solve limited area, small cesium ion distribution coefficient, low cesium ion exchange rate, etc., to achieve the effect of high stability and high removal performance

Inactive Publication Date: 2018-04-20
ZHEJIANG NORMAL UNIVERSITY
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure copper ferricyanide is not an effective ion exchanger for electrochemical control due to the limited area available for cesium ion adsorption. In addition, the poor conductivity of pure copper ferricyanide is not conducive to the electrode interface. electron transfer, which eventually leads to a lower cesium ion exchange rate and a smaller cesium ion distribution coefficient

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
  • Preparation method for copper ferricyanide/multi-walled carbon nanotube hybrid material with core-shell structure and application of material in adsorption of cesium ions
  • Preparation method for copper ferricyanide/multi-walled carbon nanotube hybrid material with core-shell structure and application of material in adsorption of cesium ions
  • Preparation method for copper ferricyanide/multi-walled carbon nanotube hybrid material with core-shell structure and application of material in adsorption of cesium ions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] Reagents and materials

[0020]The reagents used include polyvinylpyrrolidone (PVP, molecular weight 40000) purchased from Acros Company, and the laboratory water was purified through the Milli-Q system. Reagent-grade cesium chloride CsCl is used as a substitute for radioactive cesium compounds. Multi-walled carbon nanotubes were purchased from Chengdu Organic Chemicals Co., Ltd. (purity>95%, outer diameter 10-20nm, length 30μm).

[0021] 10 mg of multi-walled carbon nanotubes were ultrasonically dispersed in 30 mL of deionized aqueous solution containing 1 mg of polyvinylpyrrolidone, and the formed multi-walled carbon nanotube dispersion was adjusted to pH=1 with hydrochloric acid, and equimolar amounts (20 mM) of copper ions and Hexacyano and ferrite ion [Fe(CN) 6 ] 3- Add to the above solution in batches, and stir for 30min, then transfer the mixed solution to a polytetrafluoroethylene reactor, conduct a hydrothermal reaction at 180°C for 10h, then cool to room te...

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 preparation method for a copper ferricyanide / multi-walled carbon nanotube hybrid material with a dendritic core-shell structure and an application of the material in selective adsorption of cesium ions. The method comprises the following steps: multi-walled carbon nanotubes are dispersed into a deionized water solution containing polyvinylpyrrolidone, the pH of the systemis adjusted to 1-7 by using hydrochloric acid, then copper ions and hexacyanoferrate ions are added into the above solution in batches, uniform mixing is performed under stirring, the mixed liquid istransferred into a hydrothermal reaction kettle, a hydrothermal reaction is performed for 1-24h at the temperature of 100-200 DEG C, then cooling is performed to room temperature, the reaction is stopped, centrifugation collection is performed, washing is performed with water and ethanol, and therefore the copper ferricyanide / multi-walled carbon nanotube hybrid material with the dendritic core-shell structure is obtained. Besides the very high selectivity and removal performance on cesium ions, the copper ferricyanide / multi-walled carbon nanotube hybrid material adsorbing the cerium ions canbe regenerated and shows very high stability in the treatment process of the cerium ions.

Description

technical field [0001] The invention belongs to the technical field of nuclear pollution treatment and synthesis of adsorption materials, and in particular relates to a preparation method of a copper ferricyanide / multi-walled carbon nanotube hybrid material with a dendritic core-shell structure and its use in selective adsorption of cesium ions Applications. Background technique [0002] Atomic fission in nuclear power plants produces cesium-137, the main component of radioactive wastewater. In addition, cesium-137 is a strong source of gamma rays. Due to its long radioactive half-life (30.2 years) and its transferability in the biosphere, cesium-137 will threaten people's health. Radionuclides can be separated and recycled by many methods, including solvent extraction, co-precipitation, chemical adsorption and ion exchange, among which the electrically-switched ion exchange (ESIX) method is a A new cesium ion separation technology, in which the exchange of cesium ions can...

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
IPC IPC(8): B01J20/20B01J20/02B01J20/30B01J20/34B01J47/014B01J47/06B01J49/30G21F9/12B82Y30/00
CPCB01J20/0237B01J20/205B01J20/3441B01J47/014B01J47/06B01J49/30B82Y30/00G21F9/12
Inventor 袁军华乔俊华黄晓岚黄璐郑媛媛
Owner ZHEJIANG NORMAL UNIVERSITY
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