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Title: Hydrophilic, light active coating for membranes

Abstract

A porous membrane provides enhanced filtration of pollutants and particles by coating the membrane with conformal thin films of doped titanium dioxide via atomic layer deposition or, alternatively, sequential infiltration synthesis. The membrane can either be organic or inorganic, and the doping of the membrane, usually with nitrogen, is an important feature that shifts the optical absorption of the TiO2 from the UV range into the visible-light range. This enables the use of lower energy light, including sunlight, to activate the photocatalytic function of the film. The coating described in the present invention is compatible with virtually any porous membrane and allows for precise tuning of the pore size with molecular precision. The present invention presents a new coating process and chemical structure that provides catalytic activity, strongly enhanced by light, to both mitigate fouling and break down various organic pollutants in the process stream.

Inventors:
; ; ;
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1632455
Patent Number(s):
10537858
Application Number:
15/002,102
Assignee:
UChicago Argonne, LLC (Chicago, IL)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
C - CHEMISTRY C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE C02F - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
DOE Contract Number:  
AC02-06CH11357
Resource Type:
Patent
Resource Relation:
Patent File Date: 01/20/2016
Country of Publication:
United States
Language:
English

Citation Formats

Darling, Seth B., Lee, Anna, Elam, Jeffrey W., and Libera, Joseph A. Hydrophilic, light active coating for membranes. United States: N. p., 2020. Web.
Darling, Seth B., Lee, Anna, Elam, Jeffrey W., & Libera, Joseph A. Hydrophilic, light active coating for membranes. United States.
Darling, Seth B., Lee, Anna, Elam, Jeffrey W., and Libera, Joseph A. Tue . "Hydrophilic, light active coating for membranes". United States. https://www.osti.gov/servlets/purl/1632455.
@article{osti_1632455,
title = {Hydrophilic, light active coating for membranes},
author = {Darling, Seth B. and Lee, Anna and Elam, Jeffrey W. and Libera, Joseph A.},
abstractNote = {A porous membrane provides enhanced filtration of pollutants and particles by coating the membrane with conformal thin films of doped titanium dioxide via atomic layer deposition or, alternatively, sequential infiltration synthesis. The membrane can either be organic or inorganic, and the doping of the membrane, usually with nitrogen, is an important feature that shifts the optical absorption of the TiO2 from the UV range into the visible-light range. This enables the use of lower energy light, including sunlight, to activate the photocatalytic function of the film. The coating described in the present invention is compatible with virtually any porous membrane and allows for precise tuning of the pore size with molecular precision. The present invention presents a new coating process and chemical structure that provides catalytic activity, strongly enhanced by light, to both mitigate fouling and break down various organic pollutants in the process stream.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {1}
}

Patent:

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