Porous graphene based composite membranes for nanofiltration, desalination, and pervaporation

US10112150B2 · kind B2 · utility

Assignee

• The Research Foundation for The State University of New York · US

Inventors

• Benjamin Chu · Setauket, US
• Benjamin S. Hsiao · Setauket, US
• Hongyang Ma · East Setauket, US
• Zhe Wang · Xiangtan City, CN

Key dates

• Filing date: Jul 15, 2015
• Grant date: Oct 30, 2018
• Expiry date: Oct 29, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A20/131
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Membranes of the present disclosure possess very thin barrier layers, with high selectivity, high throughput, low fouling, and are long lasting. The membranes include graphene and/or graphene oxide barrier layers on a nanofibrous supporting scaffold. Methods for forming these membranes, as well as uses thereof, are also provided. In embodiments, an article of the present disclosure includes a nanofibrous scaffold; at least a first layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof on at least a portion of a surface of the nanofibrous scaffold; an additive such as crosslinking agents and/or particles on an outer surface of the at least first layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof.