Graphene-based water purification material, and preparation method and application thereof
A graphene-based, graphene-based technology, applied in chemical instruments and methods, other chemical processes, adsorbed water/sewage treatment, etc., can solve problems such as re-stacking, and achieve the effects of easy operation, simple preparation method, and good cycle performance.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0034] Using weak oxidation, weak ultrasound, and step-by-step centrifugation to obtain a large graphene oxide aqueous solution as a raw material, the concentration of the graphene oxide aqueous solution is 2mg / ml, put 50ml of the graphene oxide aqueous solution into a hydrothermal kettle, and add 0.5g of thiourea . Heat the hydrothermal kettle to 180°C and keep it warm for 6 hours to form a graphene sponge. Take out the graphene sponge and place it in water for 24 hours. This process can remove unreacted thiourea and other residues. Then, the graphene sponge was freeze-dried to form a three-dimensional graphene sponge structure assembled from graphene oxide. In this embodiment, the pore diameter is 300 nanometers-20 microns, and the specific surface area is 79m 2 / g.
[0035] Put the dry graphene sponge into the dye rhodamine B solution (the concentration of the dye is 1.2 × 10 -4 mol / L), with stirring, the stirring speed is 100rpm / min, the concentration is tested every 30...
Embodiment 2
[0038] Using the prepared small-sized graphene oxide aqueous solution as a raw material, the concentration of the graphene oxide aqueous solution is 2 mg / ml, 50 ml of the graphene oxide aqueous solution is put into a hydrothermal kettle, and 0.1 g of thiourea is added. Heat the hydrothermal kettle to 180°C and keep it warm for 6 hours to form a graphene sponge. Take out the graphene sponge and place it in water for 24 hours. This process can remove unreacted thiourea and other residues. Then, the graphene sponge was freeze-dried to form a three-dimensional graphene sponge structure assembled from graphene oxide. In this embodiment, the pore diameter is 200 nanometers-15 microns, and the specific surface area is 120m 2 / g.
[0039] Put the dry graphene sponge into the dye rhodamine B solution (the concentration of the dye is 1.2 × 10 -4 mol / L), with stirring, the stirring speed is 100rpm / min, the concentration is tested every 30min during the adsorption process, and the color...
Embodiment 3
[0042] Using the prepared small-sized graphene oxide aqueous solution as a raw material, the concentration of the graphene oxide aqueous solution is 2mg / ml, put 50ml of the graphene oxide aqueous solution into a hydrothermal kettle, and add 0.3g of thiourea. Heat the hydrothermal kettle to 180°C and keep it warm for 6 hours to form a graphene sponge. Take out the graphene sponge and place it in water for 24 hours. This process can remove unreacted thiourea and other residues. Then, the graphene sponge was freeze-dried to form a three-dimensional graphene sponge structure assembled from graphene oxide. In this embodiment, the pore diameter is 400 nanometers-12 microns, and the specific surface area is 149m 2 / g.
[0043] Put the dry graphene sponge into the dye rhodamine B solution (the concentration of the dye is 1.2 × 10 -4 mol / L), with stirring, the stirring speed is 100rpm / min, the concentration is measured every 30min during the adsorption process, and the color of the d...
PUM
| Property | Measurement | Unit |
|---|---|---|
| pore size | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More