期刊
MATERIALS
卷 11, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/ma11010159
关键词
ZIF-8; porous carbon; nitrogen-containing functional groups; acetone adsorption
类别
资金
- National Nature Science Foundation China [21376274]
- National Key Technology Support Program [2015BAL04B02]
Nitrogen-doped porous carbon (ZC) is prepared by modification with ammonia for increasing the specific surface area and surface polarity after carbonization of zeolite imidazole framework-8 (ZIF-8). The structure and properties of these ZCs were characterized by Transmission electron microscopy, X-ray diffraction, N-2 sorption, X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. Through static adsorption tests of these carbons, the sample obtained at 600 degrees C was selected as an excellent adsorbent, which exhibited an excellent acetone capacity of 417.2 mg g(-1) (25 degrees C) with a very large surface area and high-level nitrogen doping (13.55%). The microporosity, surface area and N-containing groups of the materials, pyrrolic-N, pyridinic-N, and oxidized-N groups in particular, were found to be the determining factors for acetone adsorption by means of molecular simulation with density functional theory. These findings indicate that N-doped microporous carbon materials are potential promising adsorbents for acetone.
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