期刊
ADVANCED SUSTAINABLE SYSTEMS
卷 1, 期 3-4, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsu.201600028
关键词
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资金
- National Natural Science Foundation of China [51503028]
- Shanghai Rising-Star Program [16QA1400200]
- Shanghai Institutions of Higher Learning [TP2016019]
- Fundamental Research Funds for the Central Universities
- DHU Distinguished Young Professor Program
- State key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University [LK1513]
Porous carbon nanofibrous materials have great potential for energy-efficient CO2 capture and separations, but a major hurdle is the lack of mechanical strength and flexibility. Herein, the authors report a facile strategy for the fabrication of amine functionalized carbon nanotube (NC) doped carbon nanofibers (CNFs) (denoted as NC@CNFs) with high flexibility and hierarchical porosity. The NC@CNFs are used as robust fibrous adsorption materials for CO2 capture, which achieve superior CO2 uptake of 6.3 mmol g(-1) at 1.0 bar and 298 K, as well as remarkable CO2/N-2 selectivity and excellent cyclability. Integrating NC into CNFs not only brings number of adsorption sites (i. e., -NH2) and tunable hierarchical pores for CO2 uptake, but also serves as single-fiber-crack connection to prevent NC@CNFs from brittle fracture. More significantly, the flexible NC@CNFs with highly stable structure and mechanical strength can overcome the limitation of easy pulverization and structure collapses for traditional particle-shaped solid sorbents, which makes them highly operable and applicable. This work paves the way for a new route to produce fibrous textile materials with high flexibility and outstanding performance for gas separation.
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