Temperature-Responsive Microgel Films as Reversible Carbon Dioxide Absorbents in Wet Environment

Hydrogel films composed of temperature‐responsive microgel particles (GPs) containing amine groups work as stimuli‐responsive carbon dioxide absorbent with a high capacity of approximately 1.7 mmol g−1. Although the dried films did not show significant absorption, the reversible absorption capacity...

Full description

Saved in:
Bibliographic Details
Published in:Angewandte Chemie 2014-03, Vol.126 (10), p.2692-2695
Main Authors: Yue, Mengchen, Hoshino, Yu, Ohshiro, Yukinori, Imamura, Kazushi, Miura, Yoshiko
Format: Article
Language:eng ; ger
Subjects:
Absorbents
Bicarbonates
Carbon capture and storage
Carbon dioxide
Chemistry
Desorption
Diffusion
Grüne Chemie
Hydrogels
Kohlendioxidabscheidung
Kohlendioxidfixierung
Microgels
Mikrogelpartikel
Sorbentien
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Hydrogel films composed of temperature‐responsive microgel particles (GPs) containing amine groups work as stimuli‐responsive carbon dioxide absorbent with a high capacity of approximately 1.7 mmol g−1. Although the dried films did not show significant absorption, the reversible absorption capacity dramatically increased by adding a small amount of water (1 mL g−1). The absorption capacity was independent of the amount of added water beyond 1 mL g−1, demonstrating that the GP films can readily be used under wet conditions. The amount of CO2 absorbed by the GP films was proportional to their thickness up to 200–300 μm (maximum capacity of about 2 L m−2). Furthermore, the films consisting of GPs showed faster and greater absorption and desorption of CO2 than that of monolithic hydrogel films. These results indicated the importance of a fast stimulus response rate of the films that are composed of GPs in order to achieve long‐range and fast diffusion of bicarbonate ions. Our study revealed the potential of stimuli‐responsive GP films as energy‐efficient absorbents to sequester CO2 from high‐humidity exhaust gases. Kohlendioxidabscheidung: Mit Amingruppen funktionalisierte Hydrogelfilme aus temperaturresponsiven Mikrogelpartikeln (GP) zeigen bei der reversiblen Absorption von Kohlendioxid eine hohe, von der Temperatur (30–75 °C) abhängige Aufnahmefähigkeit (siehe Bild). Ein schnelles Ansprechverhalten der GP‐Filme auf den thermischen Reiz ermöglicht eine tiefe und schnelle Diffusion der Bicarbonationen in die Filme.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201309758