Liquid-phase methylene blue adsorption of a novel hierarchical porous carbon aerogel

被引：0
|
作者：
Cai Li-feng [1 ,2 ]
Chen Lu-yi [2 ]
Wang Chun-li [1 ]
Liang Ye-ru [2 ]
Fu Ruo-wen [2 ]
Wu Ding-cai [2 ]
机构：
[1] Putian Univ, Coll Environm & Biol Engn, Putian 351100, Peoples R China
[2] Sun Yat Sen Univ, Inst Mat Sci, PCFM Lab, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China
来源：
NEW CARBON MATERIALS | 2015年 / 30卷 / 06期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Carbon aerogels; Hierarchical porous structure; Methylene blue; Adsorption; ACTIVATED BAMBOO CHARCOAL; AQUEOUS-SOLUTION; EQUILIBRIUM; DESIGN;
D O I：
10.19869/j.ncm.1007-8827.2015.06.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel hierarchical porous carbon aerogel (HPCA) was fabricated and its nanostructure was investigated by SEM and N-2 adsorption. The methylene blue (MB) adsorption properties of the HPCA in water were studied. It is found that the HPCA has a hierarchical micro-, meso- and macropore structure. Its BET and micropore surface areas are 512 and 359 m(2).g(-1), respectively. The MB adsorption capacity increases with adsorption time, speed of stirring, temperature and pH value, and the MB removal efficiency can reach 99.8% under optimized conditions. The adsorption kinetics can be well described by a pseudo-second-order equation and the adsorption is controlled by liquid film diffusion in the initial stages and intraparticle diffusion later.
引用
收藏
页码：560 / 565
页数：6
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