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Functionalized Metal–Organic Frameworks for the Efficient Removal of Low Concentrations of Ammonia
Author(s) -
Li Libo,
Wang Yong,
Yang Jiangfeng,
Chen Yang,
Li Jinping
Publication year - 2016
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201500445
Subject(s) - ammonia , polydimethylsiloxane , adsorption , coating , chemical engineering , relative humidity , materials science , chemistry , inorganic chemistry , nanotechnology , organic chemistry , physics , engineering , thermodynamics
Abstract The excellent ammonia adsorption properties of [Cu(bpy) 2 (OTf) 2 ] n (ELM‐12; bpy=4,4′‐bipyridine, OTf=trifluoromethanesulfonate) make it unique for the removal of ammonia at low concentrations, but its instability under humid conditions restrict its practical applications. Herein, a functionalized ELM‐12@PDMS (PDMS=polydimethylsiloxane) composite was prepared by coating a nanoscale PDMS layer on the ELM‐12 surface, which significantly increased its hydrophobicity. The dynamic ammonia adsorption properties of ELM‐12 and ELM‐12@PDMS were explored by means of kinetic breakthrough measurements under dry and humid conditions. ELM‐12@PDMS can effectively capture ammonia at 100 ppm when maintained under 80 % relative humidity, which makes it promising for real applications.