聚偏氟乙烯
碳化
材料科学
吸附
多孔性
化学工程
碳纳米纤维
解吸
静电纺丝
纳米纤维
比表面积
碳纤维
复合材料
催化作用
有机化学
化学
聚合物
碳纳米管
扫描电子显微镜
工程类
复合数
作者
Seok Min Hong,Sung Hyun Kim,Bo Gyeong Jeong,Seong Mu Jo,Ki Bong Lee
出处
期刊:RSC Advances
[The Royal Society of Chemistry]
日期:2014-11-06
卷期号:4 (103): 58956-58963
被引量:44
摘要
Highly porous carbon nanofibers (CNFs) are successfully prepared for CO2 capture from the carbonization of electrospun polyvinylidene fluoride (PVDF). In the CNF preparation, different temperatures in the range 300–1000 °C are applied for carbonization, and the effect of temperature is investigated. Well-developed porosities and enhanced CO2 adsorption uptakes are achieved by applying a large degree of carbonization at temperatures of 400 °C or above. In the carbonization at high temperatures, narrow micropores (<0.7 nm) are predominantly developed in the PVDF-based CNFs, contributing to an increase of specific surface area and pore volume up to 1065 m2 g−1 and 0.61 cm3 g−1, respectively. The highest CO2 adsorption uptake of 3.1 mol kg−1 is measured at 30 °C and ∼1 atm for PVDF-based CNF carbonized at 1000 °C. PVDF-based CNFs also display excellent recyclability and rapid adsorption–desorption kinetics, which make PVDF-based CNFs promising adsorbents for CO2 capture.
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