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| Type |
Poster Presentation |
| Area |
Inorganic Chemistry |
| Room No. |
Grand Ballroom |
| Time |
10월 19일 (금요일) 11:00~12:30 |
| Code |
INOR.P-53 |
| Subject |
Gas sorption and capacitive properties of N-doped microporous carbon nanospheres prepared by direct carbonization of mesoporous silica nanospheres |
| Authors |
Hyun-Chul Kim, Minsun Park1, Seong Huh*
Department of Chemistry, Hankuk University of Foreign Studies, Korea
1Chemistry, Hankuk University of Foreign Studies, Korea
|
| Abstract |
We introduced a simple and effective direct carbonization method to synthesize N-doped microporous carbon nanospheres (MCNs). Without using additional carbon precursors, the direct carbonization of as-prepared mesoporous silica nanospheres (MSNs) containing cetylpyridinium bromide (CTPB) template led to the N-doped MCNs (SBET = 463 m2 g-1). From the CTPB template, N-doping process into the carbon matrix successfully occurred during the carbonization. Due to both the N-doped Lewis basic sites and uniform microporosity, the N-doped MCN was a good CO2 adsorbent material with high CO2 adsorption enthalpy in the low surface coverage (Qst = 58.4 kJ mol-1). Furthermore, the N-doped MCNs showed not only good cyclic stability during multiple CO2 sorption but also highly selective CO2 adsorption ability over CH4 and H2 at low temperature. Unique microporous features and the presence of N-dopants combined with graphitic carbon structures led to good electrochemical capacitive behavior of the N-doped MCNs. The maximum specific capacitance value of the carbon material reached up to 452.5 F g-1. It also displayed great capacitance retention even after 30000 cycles. |
| E-mail |
khc@hufs.ac.kr |
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122nd General Meeting of the KCS