亚甲蓝
吸附
壳聚糖
介孔材料
多孔性
微球
化学工程
朗缪尔吸附模型
碳纤维
甲基蓝
材料科学
化学
纳米技术
复合材料
光催化
有机化学
复合数
催化作用
工程类
作者
Wei Deng,Shuwei Tang,Xi Zhou,Ye Liu,Shijie Liu,Jiwen Luo
标识
DOI:10.1016/j.carbpol.2020.116736
摘要
Chitosan (CS) can be used for the preparation of carbon materials with different morphologies due to its excellent properties, but there are no reports on its spherical morphology. In this study, a feasible step-by-step strategy was proposed to fabricate nitrogen-containing chitosan-based porous carbon microspheres (CPCM) in HCl and KOH. The unique spherical morphology and honeycomb-like porous structure of CPCM were accurately regulated. A great quantity of micro/mesopores endowed CPCM an ultra-high specific surface area up to 2463.9 m2 g-1. Moreover, CPCM exhibited an ultra-high maximum adsorption capacity up to 1599.03 mg g-1 for methylene blue (MB), meanwhile the adsorption process was in well agreement with the Langmuir isotherm and pseudo-second-order kinetic models. It was simultaneously a favorable reusable adsorbent with high regenerative capacity. The high dye adsorption properties suggest that chitosan can be a promising candidate for sewage treatment in the form of carbon microspheres.
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