期刊
MATERIALS LETTERS
卷 185, 期 -, 页码 63-66出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.08.108
关键词
Carbon materials; Hollow; Functional; Self-catalyzed; CO2 capture
资金
- Beiging National Laboratory for Molecular Sciences [20140120]
- Science and Technology Research Projects in Hebei Universities [QN20131069, QN2014142, ZD20131032, Z2013001]
- Five Platform Open Fund Projects of Hebei University of Science and Technology [2014PT86]
The hollow carbon nanospheres (HCNs) are synthesized by self-catalyzed method. The amino-functionalized silica nanospheres (NH2-SiO2) play the roles of template and catalyst. As a basic group, the amino provides slight alkaline conditions which can catalyze the polymerization of resorcinol-formaldehyde (RF) resin. Additionally, the amino group covering the outer surface of SiO2 turns to be slight positively charged in the solution, which allows deposition of negatively charged RF on the surface of NH2-SiO2. The method has an advantage over previous method in terms of environment protection due to the absence of surfactant and ammonia. After carbonization and removal of the SiO2 templates, the obtained HCNs completely copy the morphology of SiO2, exhibiting uniform and monodispersed spherical structures with the diameter of 290 nm and surface area of 777 m(2) g(-1). The sample exhibits a performance for CO2 capture with the capacity of 3.65 mmol g(-1) at 298 K and 1.0 bar after activation with KOH. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据