期刊
ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 8, 页码 5547-5555出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.5b11249
关键词
ionic liquids; alpha-zirconium phosphate; coassembly; CO2 capture; immobilization
资金
- National Science Foundation [DMR-1205670]
- Key Laboratory for Ultrafine Materials of Ministry of Education at East China University of Science and Technology
- startup foundation for introducing the talent of Nanjing University of Information Science & Technology (NUIST) [2241131301102]
A new methodology was developed for the immobilization of ionic liquids (ILs) on alpha-zirconium phosphate (ZrP) and montmorillonite (MMT) single-layer nanosheets via a facile coassembly process. The coassembled inorganic nanosheet/1-n-butyl-3-methylimidazolium chloride (BMIMCl) hybrids were systematically characterized. The results showed that the ILs were successfully assembled with ZrP or MMT single-layer nanosheets to form an intercalated structure. The inorganic nanosheet/IL hybrids can serve as efficient CO2 absorbents. The CO2 sorption of BMIMCl could be made up to 21 times more efficient because of the high exposure of the functional groups of BMIMCl in the coassembled hybrids. CO2 was physically absorbed by the hybrids with a slow equilibrium time at lower temperatures, whereas higher temperatures allowed for faster diffusion and chemical absorption of CO2. The best CO2 capture capacities of the hybrids were 0.73 mmol/g at 60 degrees C for ZrP/BMIMCl and 0.42 mmol/g at 70 degrees C for MMT/BMIMCl.
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