Granted Patent
B2
US 12,239,960 · App. 17/153,792 · Granted Mar 4, 2025
Zeolite composites for water purification
Inventors:
Marcia Renata Quadros da Silva (Oak Creek, WI); David Garman (Lindfield, AU); Mohsen Manjili (Glendale, WI); Yan Zhang (Tianjin, CN)
Assignee:
UWM Research Foundation, Inc.
B01J20/3204B01J20/183B01J20/186B01J20/3071B01J20/3078B01J20/3085B01J20/3223B01J20/3234B01J20/3285C01B32/23C02F1/288B01J2220/46C01B2204/04C01P2002/82C01P2002/85C01P2004/03C02F1/281C02F1/283C02F1/285C02F2101/20C02F2101/345C02F2101/36C02F2101/363C02F2303/16C02F2305/04C02F2305/08
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Abstract
Zeolites having surface modification with graphene oxide, reduced graphene oxide, or a sulfide have utility in removing pollutants from a water supply. Pollutants include Persistent Organic Pollutants (POPs) and heavy metals, such as lead. POPs are adsorbed onto zeolites having surface modification with graphene oxide and/or reduced graphene oxide. Heavy metals are adsorbed onto zeolites having surface modification with a sulfide.
Claims (18)
1. A composition comprising
(a) a zeolite substrate;
(b) a coating adhered to the zeolite substrate, the coating consisting of graphene oxide and/or reduced graphene oxide, in the form of one or more nanosheets; and
(c) a surfactant bonded to the one or more nanosheets;
wherein the one or more nanosheets is adhered to the zeolite substrate by the surfactant.
2. The composition of claim 1 , wherein the zeolite substrate is a clinoptilolite zeolite substrate.
3. The composition of claim 1 , wherein the surfactant is a cationic surfactant.
4. The composition of claim 3 , wherein the cationic surfactant is a quaternary ammonium surfactant.
5. The composition of claim 4 , wherein the quaternary ammonium surfactant is a hexadecyl trimethyl ammonium halide.
6. The composition of claim 1 , wherein the surfactant is a nonionic surfactant.
7. The composition of claim 1 , wherein the surfactant is an anionic surfactant.
8. The composition of claim 1 , wherein the coating consisting of graphene oxide in the form of the one or more nanosheets.
9. The composition of claim 1 , wherein the coating consisting of reduced graphene oxide in the form of the one or more nanosheets.
10. A method of preparing the composition of claim 1 comprising adhering one or more graphene oxide nanosheets to a zeolite substrate.
11. A composition comprising:
(a) a zeolite substrate;
(b) a coating adhered to the zeolite substrate, the coating consisting of graphene oxide and/or reduced graphene oxide, in the form of one or more nanosheets; and
(c) a -silyl-C 2-4 alkylene-NH 2 group bonded to the zeolite substrate.
Assignments (2)
CONFIRMATORY LICENSE
Recorded Mar 13, 2025
From: UNIVERSITY OF WISCONSIN MILWAUKEE
To: NATIONAL SCIENCE FOUNDATION
Reel/Frame 070499/0067 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Nov 21, 2022
From: DA SILVA, MARCIA RENATA QUADROS; GARMAN, DAVID; MANJILI, MOHSEN; ZHANG, YAN
To: UWM RESEARCH FOUNDATION, INC.
Reel/Frame 061844/0871 →
Continuity (3)
Provisional Application
63138712
· Jan 18, 2021
Provisional Application
62963460
· Jan 20, 2020
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