Nanocomposite material for adsorption of dissolved metals

Patent metadata

Field	Value
Publication number	US-10625237-B2
Application number	US-201816180619-A
Country	US
Kind code	B2
Filing date	Nov 5, 2018
Priority date	Jun 9, 2016
Publication date	Apr 21, 2020
Grant date	Apr 21, 2020

Abstract

A metal adsorbent that includes silver-decorated graphene nano-platelets and a polymer matrix that comprises polyamide, wherein the metal adsorbent is a highly porous material with a specific surface area of 200 to 300 m2/g and an average pore size of 50 to 100 Å, which effective removes heavy metals and cations from a liquid. Various embodiments of the metal adsorbent and a method of making thereof are also provided.

First claim

The invention claimed is:

1. A nanocomposite material for adsorption of dissolved metal, comprising:
particles of a polymer matrix comprising a polyamide; and
silver-decorated graphene nano-platelets that are dispersed in the polymer matrix,
wherein the polyamide comprises reacted units of an aromatic amine and an acyl halide.

2. The nanocomposite material of claim 1 , wherein the aromatic amine is an aromatic diamine and the acyl halide is a tri-acyl chloride.

3. The nanocomposite material of claim 1 , wherein the aromatic amine is phenylenediamine and the acyl halide is trimesoyl chloride.

4. The nanocomposite material of claim 1 , wherein the polyamide is a linear polymer.

5. The nanocomposite material of claim 1 , wherein the polyamide is a crosslinked polymer.

6. The nanocomposite material of claim 1 , wherein the silver-decorated graphene nano-platelets comprise graphene nano-platelets with silver nanoparticles deposited thereon.

7. The nanocomposite material of claim 6 , wherein the graphene nano-platelets have an average thickness in the range of 1 to 20 nm, and an average diameter in the range of 0.5 to 100 μm.

8. The nanocomposite material of claim 6 , wherein the silver nanoparticles have an average diameter in the range of 1 to 100 nm.

9. The nanocomposite material of claim 1 , wherein a volume ratio of the silver-decorated graphene nano-platelets to the polymer matrix is in the range of 2:1 to 1:5.

10. The nanocomposite material of claim 1 , wherein the silver-decorated graphene nano-platelets are not chemically bonded to the polymer matrix.

11. The nanocomposite material of claim 1 , wherein the particles of the polymer matrix have a specific surface area of 200 to 300 m 2 /g.

12. The nanocomposite material of claim 1 , wherein the particles of the polymer matrix have an average pore size of 50 to 100 Å.

Assignees

• Univ King Fahd Pet & Minerals

Inventors

• Saleh Tawfik Abdo
• ALJAMEEL Ahmed Salem

Classifications

• C08K3/08

  Metals · CPC title

• C08K3/042

  Graphene or derivatives, e.g. graphene oxides · CPC title

• B01J20/205

  Carbon nanostructures, e.g. nanotubes, nanohorns, nanocones, nanoballs (carbon nanotubes per se C01B32/15) · CPC title

• B01J20/264

  derived from different types of monomers, e.g. linear or branched copolymers, block copolymers, graft copolymers · CPC title

• C08L2205/22

  Mixtures comprising a continuous polymer matrix in which are dispersed crosslinked particles of another polymer · CPC title