Surface modification of a hierarchical porous carbon aerogel and its effect on the adsorption of acid fuchsin

CAI Li-feng; FU Ming-lian; CHEN Lu-yi; FU Ruo-wen; WU Ding-cai

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Article Navigation > New Carbon Mater. > 2016 > 31(3): 271-276

CAI Li-feng, FU Ming-lian, CHEN Lu-yi, FU Ruo-wen, WU Ding-cai. Surface modification of a hierarchical porous carbon aerogel and its effect on the adsorption of acid fuchsin. New Carbon Mater., 2016, 31(3): 271-276.

Citation:

CAI Li-feng, FU Ming-lian, CHEN Lu-yi, FU Ruo-wen, WU Ding-cai. Surface modification of a hierarchical porous carbon aerogel and its effect on the adsorption of acid fuchsin. New Carbon Mater., 2016, 31(3): 271-276.

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Surface modification of a hierarchical porous carbon aerogel and its effect on the adsorption of acid fuchsin

1.
College of Environmental and Biological Engineering, Fujian Provincial Key Laboratory of Ecology-Toxicological Effects & Control for Emerging Contaminants, 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);National Program for Support of Top-notch Young Professionals (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).

Received Date: 2016-05-06
Accepted Date: 2016-06-28
Rev Recd Date: 2016-06-08
Publish Date: 2016-06-28

Abstract

Abstract

The surface of a hierarchical porous carbon aerogel (HPCA-1) was modified with nitric acid to obtain mHPCA-1. Acid fuchsin (AF) adsorption on these carbon aerogels in water was studied. Results indicate that the acid modification has trivial effects on the morphology and pore structure, but obviously increases the number of surface oxygen-containing groups. The isothermal adsorption of AF on these modified carbon aerogels is monomolecular layer adsorption, and can be well described by the Langmuir equation. The maximum adsorption capacity on mHPCA-1 reaches 191.57 mg·g^-1, which is much higher than that on HPCA-1 (120.92 mg·g^-1). The adsorption kinetics can be well described by a first-order kinetic equation and the kinetic constant can be increased by the acid modification.
- Carbon aerogels,
- Hierarchical porous structure,
- Surface modification,
- Acid fuchsin,
- Adsorption

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References

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