Separation of oil-water mixtures using nanotechnology

Patent metadata

Field	Value
Publication number	US-2017247481-A1
Application number	US-201715445020-A
Country	US
Kind code	A1
Filing date	Feb 28, 2017
Priority date	Feb 29, 2016
Publication date	Aug 31, 2017
Grant date	—

Abstract

Methods for making a plurality of nanoparticles are provided. The method may include flowing a first component of the core into a reaction chamber; flowing a polymeric material into the reaction chamber; and flowing a second component of the core into the reaction chamber such that the first component reacts with the second component to form a core. The polymeric material forms a polymeric shell around the core.

First claim

What is claimed:

1 . A method of making a plurality of nanoparticles, the method comprising:
flowing a first component of the core into a reaction chamber; flowing a polymeric material into the reaction chamber; and flowing a second component of the core into the reaction chamber such that the first component reacts with the second component to form a core, wherein the polymeric material forms a polymeric shell around the core.

2 . The method of claim 1 , wherein the reaction chamber has a temperature of about 60° C. to about 120° C.

3 . The method of claim 1 , wherein the reaction chamber has a temperature of about 80° C. to about 100° C.

4 . The method of claim 1 , wherein the first component is a metal salt.

5 . The method of claim 4 , wherein the metal salt comprises an iron chloride.

6 . The method of claim 5 , wherein the iron chloride comprises FeCl 2 , FeCl 3 , or a mixture thereof.

7 . The method of claim 4 , wherein the second component is an oxygen source.

8 . The method of claim 7 , wherein the oxygen source comprises ammonium hydroxide.

9 . The method of claim 7 , wherein the core comprises a metal oxide.

10 . The method of claim 9 , wherein the metal oxide comprises iron oxide, silica, alumina, indium tin oxide, titania, or a mixture thereof.

11 . The method of claim 1 , wherein the first component and the polymeric material are supplied together into the reaction chamber.

12 . The method of claim 11 , wherein the first component and the polymeric material are supplied together in a carrying fluid into the reaction chamber.

13 . The method of claim 12 , wherein the carrying fluid comprises water.

14 . The method of claim 11 , wherein the core precipitates from the carrying fluid after reaction of the first component and the second component.

15 . The method as in claim 1 , wherein the polymeric material comprises a polyvinylpyrrolidone-based polymer.

16 . The method as in claim 15 , wherein the polyvinylpyrrolidone-based polymer has a molecular mass of about 10 kDa to about 360 kDa.

17 . The method as in claim 1 , wherein the polymeric material comprises polyvinylpyrrolidone.

18 . The method as in claim 1 , wherein the core is magnetic.

19 . The method as in claim 1 , wherein the core has an average size that about 100 nm or less.

20 . The method as in claim 1 , wherein the core has an average size of about 15 nm to about 50 nm.

Assignees

• Univ South Carolina

Inventors

• Lead Jamie R

Classifications

• B01J20/3293

  Coatings on a core, the core being particle or fiber shaped, e.g. encapsulated particles, coated fibers · CPC title

• B01J20/0229

  Compounds of Fe · CPC title

• C02F1/488

  for separation of magnetic materials, e.g. magnetic flocculation · CPC title

• B01J20/28007

  with size in the range 1-100 nanometers, e.g. nanosized particles, nanofibers, nanotubes, nanowires or the like (carbon nanostructures B01J20/205) · CPC title

• C02F2103/007

  Contaminated open waterways, rivers, lakes or ponds · CPC title