Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method and application of Fe-GO/Cs composite microspheres

A composite microsphere, 1.fe-go technology, applied in the field of preparation of Fe-GO/Cs composite microsphere

Inactive Publication Date: 2020-01-17
武汉东湖中地环保集团有限公司 +1
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Graphene oxide (graphene oxide, GO) has a huge specific surface area, is a good conductor of electrons and an excellent modified base material, but it contains many hydrophilic oxygen functional groups, which makes GO easily soluble in water, so it needs to be investigated. Modifications for better performance

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 and application of Fe-GO/Cs composite microspheres
  • Preparation method and application of Fe-GO/Cs composite microspheres
  • Preparation method and application of Fe-GO/Cs composite microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The present embodiment provides a kind of preparation method of Fe-GO / Cs composite microsphere, such as figure 1 shown, including the following steps:

[0027] Step 1, 100ml of 1.5% (V / V) acetic acid aqueous solution and 0.025g graphene oxide (Graphene oxide, GO) are ultrasonically stirred and mixed, and then 4.0g chitosan (Chitosan, Cs) is added and ultrasonically stirred and mixed to obtain graphene oxide / chitosan mixed solution, i.e. GO / Cs mixed solution, placed for aging;

[0028] Step 2. Add the matured GO / Cs mixture dropwise to 2%wt sodium hydroxide aqueous solution according to the volume ratio of 2:5, and stir while adding dropwise. The dropwise addition is carried out with a syringe, and the dropping rate is 1 drop / s. After the dropwise addition, stand and solidify for 24 hours to obtain microspheres, filter, wash the microspheres with deionized water until the pH of the washing liquid is neutral, add 5 wt% methanol solution of glutaraldehyde, stir, filter, a...

Embodiment 2

[0031] This embodiment provides a method for preparing Fe-GO / Cs composite microspheres, comprising the following steps:

[0032] Step 1, 200ml of 1.5% (V / V) acetic acid aqueous solution and 0.05g graphene oxide (Graphene oxide, GO) are ultrasonically stirred and mixed, and then 8.0g chitosan (Chitosan, Cs) is added and ultrasonically stirred and mixed to obtain graphite oxide The ene / chitosan mixture, i.e. the GO / Cs mixture, is left to mature;

[0033] Step 2. Add the matured GO / Cs mixture dropwise into 2%wt sodium hydroxide aqueous solution according to the volume ratio of 2:5, and stir while adding dropwise. The dropwise addition is carried out with a syringe, and the drop rate is 3 drops / s. After the dropwise addition is completed, stand and solidify for 24 hours to obtain microspheres, filter, wash the microspheres with deionized water until the pH of the washing solution is neutral, add 5 wt% methanol solution of glutaraldehyde, stir, filter, wash, and dry Dry, get GO / Cs...

Embodiment 3

[0036] This embodiment provides a method for preparing Fe-GO / Cs composite microspheres, comprising the following steps:

[0037] Step 1, 1.5% (V / V) acetic acid aqueous solution of 150ml and 0.038g graphene oxide (Graphene oxide, GO) are ultrasonically stirred and mixed, then add 6.0g chitosan (Chitosan, Cs) and ultrasonically stirred and mixed to obtain graphene oxide / chitosan mixed solution, i.e. GO / Cs mixed solution, placed for aging;

[0038] Step 2. Add the matured GO / Cs mixture dropwise into 2%wt sodium hydroxide aqueous solution according to the volume ratio of 2:5, and stir while adding dropwise. The dropwise addition is carried out with a syringe, and the dropping rate is 2 drops / s. After the dropwise addition, stand and solidify for 24 hours to obtain microspheres, filter, wash the microspheres with deionized water until the pH of the washing solution is neutral, add 5 wt% methanol solution of glutaraldehyde, stir, filter, wash, and dry , get GO / Cs ball;

[0039] S...

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
Conductivityaaaaaaaaaa
Equilibrium adsorption capacityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of Fe-GO / Cs composite microspheres. The preparation method comprises the following steps: performing ultrasonic stirring and mixing on an acetic acid watersolution and graphene oxide, further adding chitosan, performing ultrasonic stirring and mixing so as to obtain a graphene oxide / chitosan mixed liquid, namely a GO / Cs mixed liquid, and performing placing and aging; adding dropwise the aged GO / Cs mixed liquid into an alkaline aqueous solution while stirring, after dropping is completed, allowing the solution to stand and cure so as to obtain microspheres, performing filtering, washing the microspheres till the pH value of a washing liquid is neutral, adding 5wt% of a methanol solution of glutaraldehyde, and performing stirring, filtering, washing and drying so as to obtain GO / Cs spheres; and adding the GO / Cs spheres into a FeCl2 aqueous solution, performing heating drying, washing and drying, so as to obtain the Fe-GO / Cs composite microspheres. The invention further discloses application of the Fe-GO / Cs composite microspheres as an adsorbent. The Fe-GO / Cs composite microspheres have a good effect on removal of As (III) in water.

Description

technical field [0001] The present invention relates to the field of inorganic materials. More specifically, the present invention relates to a preparation method and application of Fe-GO / Cs composite microspheres. Background technique [0002] Magnetic polymer composite microspheres refer to polymer microspheres that contain magnetic metals or metal oxides and have magnetic response properties. On the one hand, magnetic polymer microspheres not only have the characteristics of ordinary polymer microspheres, for example, new functional groups can be endowed by means of surface modification, copolymerization and cross-linking; on the other hand, such polymer microspheres are Its unique magnetic responsiveness can reach the oriented region or separate under the action of an external magnetic field, making it very promising in the fields of biomedicine, bioengineering and cytology. [0003] Graphene oxide (graphene oxide, GO) has a huge specific surface area, is a good conduc...

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): B01J20/24B01J20/20B01J20/28B01J13/02C02F1/28C02F101/10
CPCB01J20/24B01J20/20B01J20/0288B01J20/0229B01J20/28021B01J13/02C02F1/286C02F1/281B01J2220/4806B01J2220/4825C02F2101/103
Inventor 单慧媚赵超然彭三曦罗林波王少培曾春芽
Owner 武汉东湖中地环保集团有限公司