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

Nano hydrogel for detecting and adsorbing Hg<2+> in water body and preparation method thereof

A nano-hydrogel, water body technology, applied in the fields of polymer materials and sewage treatment, can solve problems such as unfavorable industrialized production and complex preparation process, and achieve the effects of natural raw materials and easy preparation and operation.

Inactive Publication Date: 2020-12-08
陈佳
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of this method requires three-step operation modification to obtain a composite hydrogel, the preparation process is complicated, and it is not conducive to industrial production

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
  • Nano hydrogel for detecting and adsorbing Hg&lt;2+&gt; in water body and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of detection and adsorption of Hg in water 2+ The preparation method of nanometer hydrogel, comprises the steps:

[0036] (1) 3.79g of modified chitosan powder with a degree of deacetylation of 95% was dissolved in 10mL of glacial acetic acid, and magnetically stirred to completely dissolve it to obtain a chitosan solution. ;

[0037] (2) Dissolving 1.00 g of silver nitrate in water to prepare a silver nitrate solution.

[0038](3) Dissolve 15.91 g of hydroxypropyl cellulose in 20 mL of deionized water, and magnetically stir in an oil bath at 80° C. to completely dissolve it to prepare a cellulose solution.

[0039] (4) the chitosan solution prepared in the above (1) is mixed with the silver nitrate solution, then add 0.20g of POSS magnetically stirred, after this in the mixed solution drop into cellulose aqueous solution, after magnetically stirred, Put this device in a water bath and react at 35°C. After 12 hours of reaction, a kind of Hg in water can be det...

Embodiment 2

[0042] A kind of detection and adsorption of Hg in water 2+ The preparation method of nanometer hydrogel, comprises the steps:

[0043] (1) 3.79g of modified chitosan powder with a degree of deacetylation of 95% was dissolved in 10mL of glacial acetic acid, and magnetically stirred to completely dissolve it to obtain a chitosan solution.

[0044] (2) Dissolving 1.00 g of silver nitrate in water to prepare a silver nitrate solution.

[0045] (3) Dissolve 15.91 g of hydroxypropyl cellulose in 20 mL of deionized water, and magnetically stir in an oil bath at 80° C. to completely dissolve it to prepare a cellulose solution.

[0046] (4) mix the chitosan solution prepared in the above (1) with the silver nitrate solution, then add 0.20g of POSS magnetically stirred, after this to the cellulose aqueous solution dripped into the mixed solution, after magnetically stirred , put this device in a water bath to react at 37°C, and after 10 hours of reaction, a device that can detect and...

Embodiment 3

[0049] A kind of detection and adsorption of Hg in water 2+ The preparation method of nanometer hydrogel, comprises the steps:

[0050] (1) 3.59g of modified chitosan powder with a degree of deacetylation of 95% was dissolved in 10mL of glacial acetic acid, and magnetically stirred to completely dissolve it to obtain a chitosan solution.

[0051] (2) Dissolving 1.00 g of silver nitrate in water to prepare a silver nitrate solution.

[0052] (3) Dissolve 14.39 g of hydroxypropyl cellulose in 20 mL of deionized water, and magnetically stir in an oil bath at 80° C. to completely dissolve it to prepare a cellulose solution.

[0053] (4) the chitosan solution prepared in the above (1) is mixed with the silver nitrate solution of 2.00g, then after adding 0.20g of POSS magnetic stirring, after this the cellulose aqueous solution dripped in the mixed solution, magnetic After stirring evenly, put the device in a water bath to react at 35°C. After 10 hours of reaction, a kind of Hg in...

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 relates to a nano-hydrogel for detecting and adsorbing Hg<2+> in water and a preparation method thereof, the nano-hydrogel comprises the following raw materials by weight: 89.0 wt%-94.9wt% of chitosan and cellulose, 0.1 wt%-1.0 wt% of a gel enhancement factor polyhedral oligomeric silsesquioxane (POSS) and 5.0 wt%-10.0 wt% of a silver-containing compound, the molar ratio of chitosanto cellulose is 1: 1-1: 2, preferably 1: 1-1: 1.5. Natural raw materials including chitosan and cellulose are safe, environmentally friendly and wide in source, amino or hydroxyl in chitosan and aldehyde groups in cellulose can be subjected to a Schiff base cross-linking reaction, enhanced gelator is added, the cross-linking reaction is performed to form hydrogel. A silver solution is introducedinto the hydrogel, silver ions are reduced into silver nanoparticles through chitosan. The silver nanoparticles can generate ion resonance, the particle size and the particle spacing of the silver nanoparticles can be changed along with the change of a resonance peak, and the method for detecting the heavy metal Hg < 2+> in the water body by utilizing the adsorption of the hydrogel and the colorimetric effect of the silver nanoparticles has a relatively great application prospect.

Description

technical field [0001] The invention relates to the field of polymer materials and the field of sewage treatment, in particular to a device capable of detecting and adsorbing Hg in water. 2+ Nanohydrogel and its preparation method. Background technique [0002] Water is an important natural resource for the survival of all kinds of organisms in nature and the source of human life. In recent years, with the rapid development of economy and society, it has caused great pollution to the natural environment, and water pollution has become increasingly serious. In water pollution, heavy metal ion pollution accounts for a large proportion. Common heavy metal ions in water include mercury ions (Hg 2+ ), lead ions (Pb 2+ ), nickel ions (Ni 2+ )Wait. These heavy metal ions have great biological toxicity, which may cause cancer and deformity of organisms, and pose a great threat to human health. Therefore, it is of great significance to study the detection and adsorption of heavy...

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): B01J20/28B01J20/24B01J20/285C02F1/28C02F101/20
CPCB01J20/24B01J20/28004B01J20/28047B01J20/285C02F1/286C02F2101/20
Inventor 陈佳
Owner 陈佳
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