Colloidal templating synthesis and adsorption characteristics of microporous–mesoporous carbons from Kraft lignin
Colloidal templating synthesis and adsorption characteristics of microporous–mesoporous carbons from Kraft lignin
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DOI：
10.1016/j.carbon.2013.06.012
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发表时间：
2013-10
期刊：
影响因子：
10.9
通讯作者：
C. Fierro;J. Górka;J. A. Zazo;J. J. Rodriguez-J.;Jowita Ludwinowicz;M. Jaroniec
中科院分区：
文献类型：
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作者：
C. Fierro;J. Górka;J. A. Zazo;J. J. Rodriguez-J.;Jowita Ludwinowicz;M. Jaroniec
以造纸工业废弃物硫酸盐木质素为碳前驱体，采用硅胶模板法合成微孔-介孔炭。这些碳的一个独特特征是在溶解用作硬模板的胶体二氧化硅后获得均匀的球形介孔，而微孔是通过合成后CO2活化产生的。所得的活化木质素基炭具有高比表面积（高达2000 m2/g）和微孔和中孔容易通过调节活化条件和优化所用的胶体二氧化硅的量和粒度来调节。通过使用20和13 nm二氧化硅胶体作为硬模板获得的活性炭的总孔体积分别超过1和2 cm 3/g。
Microporous–mesoporous carbons were synthesized via colloidal silica templating using Kraft lignin as a carbon precursor, which is a waste byproduct from paper industry. A unique feature of these carbons are uniform spherical mesopores achieved after dissolving colloidal silica used as a hard template, while micropores were created by post-synthesis CO2activation. The resulting activated lignin-based carbons possessed high specific surface area (up to 2000 m2/g) and microporosity and mesoporosity easily tunable by adjusting activation conditions and optimizing the amount and particle size of the colloidal silica used. The total pore volumes of activated carbons obtained by using 20 and 13 nm silica colloids as a hard template exceeded 1 and 2 cm3/g, respectively.