Title: Membranes having aligned 1-D nanoparticles in a matrix layer for improved fluid separation

Abstract

Membranes for fluid separation are disclosed. These membranes have a matrix layer sandwiched between an active layer and a porous support layer. The matrix layer includes 1-D nanoparticles that are vertically aligned in a porous polymer matrix, and which substantially extend through the matrix layer. The active layer provides species-specific transport, while the support layer provides mechanical support. A matrix layer of this type has favorable surface morphology for forming the active layer. Furthermore, the pores that form in the matrix layer tend to be smaller and more evenly distributed as a result of the presence of aligned 1-D nanoparticles. Improved performance of separation membranes of this type is attributed to these effects.

Inventors:

Revanur, Ravindra; Lulevich, Valentin; Roh, Il Juhn; Klare, Jennifer E.; Kim, Sangil; Noy, Aleksandr; Bakajin, Olgica

Issue Date:

2015-12-22

Research Org.:

Porifera, Inc., Hayward, CA (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1233379

Patent Number(s):

9216391

Application Number:

13/428,843

Assignee:

Porifera, Inc.

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

Show more

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D61/025 - {Reverse osmosis
B01D69/10 - Supported membranes
B01D71/021 - {Carbon}

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

B82Y40/00 - Manufacture or treatment of nanostructures

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D69/148 - {Organic/inorganic mixed matrix membranes}
B01D67/006 - {by elimination of segments of the precursor, e.g. nucleation-track membranes, lithography or laser methods}

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

B82Y30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D71/70 - Polymers having silicon in the main chain, with or without sulfur, nitrogen, oxygen or carbon only
B01D69/125 - {In-situ manufacturing by polymerisation, polycondensation, cross-linking, and/or reaction}
B01D2325/48 - Antimicrobial properties
B01D67/0079 - {Formation of membranes comprising organic and inorganic components}
B01D61/002 - {Forward osmosis, direct osmosis
B01D71/56 - Polyamides, e.g. polyester-amides
B01D67/009 - {with wave-energy, particle-radiation or plasma}
B01D69/12 - Composite membranes
B01D53/228 - {characterised by specific membranes}
B01D2323/40 - in-situ membrane formation

Show less

DOE Contract Number:  

AR0000025

Resource Type:

Patent

Resource Relation:

Patent File Date: 2012 Mar 23

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE