Using simple one-step carbonization-activation, the residues of paulownia flowers are employed as a precursor to prepare hierarchically porous activated carbon. After investigating the optimum conditions, the obtained paulownia flowers based activated carbon (PFAC) is characterized by Fourier transform infrared spectroscopy, scanning electron microscope, transmission electron microscope, Brunauer–Emmett–Teller specific surface area analysis (SBET), thermo gravimetric analysis, and X-ray photoelectron spectroscopy. The PFAC owns a high specific surface area of 1,053 m2/g as well as a hierarchically porous structure with a combination of micro-, meso- and macropores. The pore-forming mechanism is discussed according to results of characterization. Using methylene blue as model dye, the adsorption behaviors of PFAC were investigated. We found that the dye could be rapidly adsorbed by hierarchically porous PFAC, and the adsorption capacity of PFAC reached 300 mg/g.
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Research Article|
April 29 2016
Mechanisms on formation of hierarchically porous carbon and its adsorption behaviors
Jie Liu;
Jie Liu
1Key Laboratory Eco-Environment-Related Polymer Materials of Ministry of Education, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
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Lingxia Hao;
Lingxia Hao
1Key Laboratory Eco-Environment-Related Polymer Materials of Ministry of Education, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
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Wenzhen Qian;
Wenzhen Qian
1Key Laboratory Eco-Environment-Related Polymer Materials of Ministry of Education, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
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Yu-Feng He;
1Key Laboratory Eco-Environment-Related Polymer Materials of Ministry of Education, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
E-mail: heyufeng@nwnu.edu.cn
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Rong-Min Wang
Rong-Min Wang
1Key Laboratory Eco-Environment-Related Polymer Materials of Ministry of Education, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
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Water Sci Technol (2016) 74 (1): 266–275.
Article history
Received:
July 02 2015
Accepted:
April 08 2016
Citation
Jie Liu, Lingxia Hao, Wenzhen Qian, Yu-Feng He, Rong-Min Wang; Mechanisms on formation of hierarchically porous carbon and its adsorption behaviors. Water Sci Technol 7 July 2016; 74 (1): 266–275. doi: https://doi.org/10.2166/wst.2016.195
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