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 Laboratory (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
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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 = {Tue Jan 21 00:00:00 EST 2020},
month = {Tue Jan 21 00:00:00 EST 2020}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Effect of nitrogen doping concentration on the properties of TiO2 films grown by atomic layer deposition
journal, April 2011
- Cheng, Hsyi-En; Chen, Yu-Ru; Wu, Wen-Tuan
- Materials Science and Engineering: B, Vol. 176, Issue 7
Inorganic–organic core–shell titania nanoparticles for efficient visible light activated photocatalysis
journal, February 2013
- Moustakas, N. G.; Kontos, A. G.; Likodimos, V.
- Applied Catalysis B: Environmental, Vol. 130-131
Deep-level optical spectroscopy investigation of N-doped TiO2 films
journal, March 2005
- Nakano, Yoshitaka; Morikawa, Takeshi; Ohwaki, Takeshi
- Applied Physics Letters, Vol. 86, Issue 13
Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides
journal, July 2001
- Asahi, R.
- Science, Vol. 293, Issue 5528
Influence of Nitrogen Doping on the Defect Formation and Surface Properties of Rutile and Anatase
journal, January 2006
- Batzill, Matthias; Morales, Erie H.; Diebold, Ulrike
- Physical Review Letters, Vol. 96, Issue 2
Atomic layer deposition of TiO2−xNx thin films for photocatalytic applications
journal, January 2006
- Pore, Viljami; Heikkilä, Mikko; Ritala, Mikko
- Journal of Photochemistry and Photobiology A: Chemistry, Vol. 177, Issue 1
Visible light active TiO2 photocatalytic filtration membranes with improved permeability and low energy consumption
journal, April 2014
- Moustakas, N. G.; Katsaros, F. K.; Kontos, A. G.
- Catalysis Today, Vol. 224