新型层次孔炭气凝胶的液相吸附性能

蔡力锋; 陈鹭义; 王春丽; 梁业如; 符若文; 吴丁财

新型层次孔炭气凝胶的液相吸附性能

1.
莆田学院环境与生物工程学院, 福建莆田 351100;
2.
中山大学化学与化学工程学院材料科学研究所聚合物复合材料及功能材料教育部重点实验室, 广东广州 510275

基金项目: 国家自然科学基金(51422307,51372280,51173213);广东省自然科学杰出青年基金(S2013050014408);中国博士后科学基金(2015T80932);教育部"新世纪优秀人才支持计划"(NCET-12-0572);广州市珠江科技新星计划项目(2013J2200015);广东特支计划科技创新青年拔尖人才(2014TQ01C337);国家重点基础研究发展计划项目(2014CB932402);聚合物复合材料及功能材料教育部重点实验室开放课题(PCFM-2015-01);福建省教育厅科技项目(JK2014043).

详细信息

作者简介:
蔡力锋,副教授,博士.E-mail:cailifeng2013@163.com

通讯作者:
吴丁财,教授.E-mail:wudc@mail.sysu.edu.cn;蔡力锋,副教授.E-mail:cailifeng2013@163.com

中图分类号: TQ427.2⁺6
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- 被引次数: 0
出版历程
- 收稿日期: 2015-11-02
- 录用日期: 2016-01-05
- 修回日期: 2015-12-02
- 刊出日期: 2015-12-28

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

1.
College of Environmental and Biological Engineering, Putian University, Putian 351100, China;
2.
Materials Science Institute, PCFM Laboratory, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China

Funds: National Natural Science Foundation of China (51422307, 51372280, 51173213); Guangdong Natural Science Funds for Distinguished Young Scholar (S2013050014408); China Postdoctoral Science Foundation (2015T80932); Program for New Century Excellent Talents in University (NCET-12-0572); Program for Pearl River New Star of Science and Technology in Guangzhou (2013J2200015); Tip-top Scientific and Technical Innovative Youth Talents of Guangdong Special Support Program (2014TQ01C337); National Key Basic Research Program of China (2014CB932402); Open project of Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education (PCFM-2015-01); Science and technology project of the education department of Fujian province (JK2014043).

摘要

摘要: 本文制备了新型层次孔炭气凝胶(HPCA-1),利用扫描电镜和N₂吸附仪表征所得HPCA-1的纳米结构,进一步研究HPCA-1对模型有机物亚甲基蓝(MB)的液相吸附性能。结果表明, HPCA-1具有独特的微孔-中孔-大孔呈层次化分布的孔结构特征,其BET比表面积为512 m²·g^-1,微孔表面积为359 m² ·g^-1。适当增加吸附时间、搅拌速率、吸附温度和溶液pH值,有助于HPCA-1对溶液中MB的脱除,其脱除率可达99.8%;HPCA-1对MB的吸附动力学符合准二级吸附动力学方程,且吸附过程初期主要由液膜扩散控制,后期主要由颗粒内扩散控制。
- 炭气凝胶 /
- 层次孔结构 /
- 亚甲基蓝 /
- 吸附
Abstract: A novel hierarchical porous carbon aerogel (HPCA) was fabricated and its nanostructure was investigated by SEM and N₂ 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 m²·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.
- Carbon aerogels /
- Hierarchical porous structure /
- Methylene blue /
- Adsorption

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