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

Preparation method of graphene-containing high-adsorption plant protein carbon aerogel

A technology of plant protein and carbon airgel, which is applied in the field of preparation of carbon airgel materials, can solve problems not belonging to the category of carbon airgel, and achieve the effects of easy promotion, simple process, and good adsorption performance

Active Publication Date: 2021-04-16
HEBEI UNIV OF TECH
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another example is the literature "Preparation of porous carbon based on biomass tofu and its supercapacitance and dye adsorption performance research" (Yang Jiajia, Shenzhen University, 2018), "Soy protein directed hydrothermal synthesis of porous carbon aerogels for electrocatalytic oxygen reduction" (Sara-MaariaAlatalo, 2016 , Carbon) reported the use of tofu to prepare porous carbon materials, but in the literature all directly use commercial tofu as raw materials, do not involve sol-gel and freeze-drying process control, and the products are all powdery, similar to porous activated carbon, not belonging to Carbon airgel category

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 of graphene-containing high-adsorption plant protein carbon aerogel
  • Preparation method of graphene-containing high-adsorption plant protein carbon aerogel
  • Preparation method of graphene-containing high-adsorption plant protein carbon aerogel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) take fresh soybean as raw material, place in container after repeatedly cleaning and removing impurities with water, put into deionized water of 3 times of soybean dry weight and filter after soaking for 3 hours; soybean after filtering is put into soymilk machine and ground for 2 times to obtain Liquid soybean milk; pour the obtained soybean milk into a molding container and heat, when the temperature of the soybean milk is 80° C., the prepared magnesium chloride coagulant solution (the amount of magnesium chloride is 2% by weight of dry beans) is slowly added to the hot soybean milk and left to age for 30 minutes ; Take out the soybean vegetable protein gel that is pressed and dehydrated (pressure 7g per square centimeter, time 20min) for use.

[0038] (2) The soybean protein hydrogel formed in step (1) is placed in liquid nitrogen for 2 minutes to be completely frozen, and then the frozen gel is placed in a freeze dryer with a vacuum degree of 1-50pa and freeze-dr...

Embodiment 2

[0042] (1) take fresh soybean as raw material, place in container after repeatedly cleaning and removing impurities with water, put into deionized water of 3 times of soybean dry weight and filter after soaking for 3 hours; soybean after filtering is put into soymilk machine and ground for 2 times to obtain Liquid soybean milk; pour the obtained soybean milk into a molding container and heat, when the temperature of the soybean milk is 80° C., the calcium chloride coagulant solution (the amount of calcium chloride is 2% of the dry bean weight) is prepared and slowly added to the hot soybean milk and left to cool. Set to age for 30 minutes; take out the soybean vegetable protein hydrogel that has been pressed and dehydrated (pressure 8 g per square centimeter, time 15 min) for use.

[0043] (2) The soybean protein hydrogel formed in step (1) is placed in liquid nitrogen for 2 minutes to be completely frozen, and then the frozen gel is placed in a freeze dryer with a vacuum degre...

Embodiment 3

[0047] (1) take fresh soybean as raw material, place in container after repeatedly cleaning and removing impurities with water, put into deionized water of 3 times of soybean dry weight and filter after soaking for 3 hours; soybean after filtering is put into soymilk machine and ground for 2 times to obtain Liquid soy milk; pour the obtained soy milk into a molding container and heat, when the temperature of the soy milk is 80°C, the prepared citric acid coagulant solution (the amount of citric acid is 2% by weight of dry beans) is slowly added to the hot soy milk and left to stand for aging 30 minutes; take out the soybean vegetable protein hydrogel that has been pressed and dehydrated (pressure 9g per square centimeter, time 10min) for use.

[0048] (2) The soybean protein hydrogel formed in step (1) is placed in liquid nitrogen for 2 minutes to be completely frozen, and then the frozen gel is placed in a freeze dryer with a vacuum degree of 1-50pa and freeze-dried at -80°C ...

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
densityaaaaaaaaaa
adsorptionaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of graphene-containing high-adsorption plant protein carbon aerogel. The preparation method comprises the following steps: (1) adding water into a protein-rich natural plant as a raw material to prepare slurry, adding a coagulator, standing for aging, and carrying out pressurized dehydration and molding for later use; (2) freezing and drying the formed plant protein gel to obtain protein aerogel; (3) soaking the freeze-dried aerogel in an activating agent solution, and then heating for carbon activation in an inert atmosphere; and (4) washing and drying to obtain an N-doped carbon aerogel product. The graphene-containing plant protein carbon aerogel is prepared in-situ by taking natural plant protein as a raw material and referring to a frozen bean curd preparation process, the process is simple, the specific surface area of the product can reach 1000-3000 m<2> / g, the density is 0.01 g / cm<3> to 0.05 g / cm<3>, the maximum adsorption capacity on typical dye methylene blue exceeds 500 mg / g, the adsorption performance is good, and the popularization is easy.

Description

technical field [0001] The invention relates to a preparation method of a carbon aerogel material, in particular to a preparation method of a graphene-containing vegetable protein-based carbon aerogel material. Background technique [0002] Graphene is a new type of nanomaterial with the thinnest, hardest, and the strongest electrical and thermal conductivity in the world. Since the advent of mechanical exfoliation in 2004, graphene has become a global research and development hotspot, and graphene is also known for this. The king of new materials. At present, graphene has been developed and used in many fields such as adsorption, catalysis, biomedicine and electrochemistry, and has great potential for development. [0003] Carbon aerogel is a new type of nano-scale porous carbon material, which is obtained by carbonization at high temperature by replacing the liquid in the gel structure with gas without destroying the organic hydrogel structure. As the second largest type...

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): C01B32/348C01B32/318C01B32/184B01J20/20B01J20/28B01J13/00
Inventor 段昕辉王颖慧汤庆国丁燕梁金生洪伟
Owner HEBEI UNIV OF TECH