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High Virus Removal by Self‐Organized Nanostructured 2D Liquid‐Crystalline Smectic Membranes for Water Treatment
Author(s) -
Kuo Daniel,
Liu Miaomiao,
Kumar K. R. Sunil,
Hamaguchi Kazuma,
Gan Kian Ping,
Sakamoto Takeshi,
Ogawa Takafumi,
Kato Riki,
Miyamoto Nobuyoshi,
Nada Hiroki,
Kimura Masahiro,
Henmi Masahiro,
Katayama Hiroyuki,
Kato Takashi
Publication year - 2020
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.202001721
Subject(s) - membrane , materials science , mesogen , monomer , nanopore , chemical engineering , permeation , bilayer , liquid crystal , polymerization , ionic liquid , ionic bonding , nanotechnology , liquid crystalline , organic chemistry , chemistry , polymer , composite material , catalysis , ion , optoelectronics , biochemistry , engineering
To obtain high quality of drinking water free from biocontaminants is especially important issue. A new strategy employing smectic liquid‐crystalline ionic membranes exhibiting 2D structures of layered nanochannels for water treatment is proposed for efficient virus removal and sufficient water flux. The smectic A (SmA) liquid‐crystalline membranes obtained by in situ polymerization of an ionic mesogenic monomer are examined for removal of three distinct viruses with small size: Qβ bacteriophage, MS2 bacteriophage, and Aichi virus. The semi‐bilayer structure of the SmA significantly obstructs the virus penetration with an average log reduction value of 7.3 log 10 or the equivalent of reducing 18 million viruses down to 1. Furthermore, the layered nanochannels of the SmA liquid crystal allow efficient water permeation compared to other types of liquid‐crystalline membrane consisting of nanopores.