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Materials 2015, 8(4), 1652-1665; doi:10.3390/ma8041652

Tuning the Pore Geometry of Ordered Mesoporous Carbons for Enhanced Adsorption of Bisphenol-A

1
Industrial Catalysis and Adsorption Technology (INCAT), Department of Industrial Technology and Construction, Faculty of Engineering and Architecture, Ghent University, Valentin Vaerwyckweg 1, Ghent 9000, Belgium
2
Laboratory for Chemical Technology, Faculty of Engineering and Architecture, Ghent University, Technologiepark 914, Ghent 9052, Belgium
3
Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium
4
Sol–gel Centre for Research on Inorganic Powders and Thin films Synthesis (SCRiPTS), Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281-S3, Ghent 9000, Belgium
*
Author to whom correspondence should be addressed.
Academic Editor: Rafael Luque
Received: 25 February 2015 / Revised: 26 March 2015 / Accepted: 31 March 2015 / Published: 10 April 2015
(This article belongs to the Special Issue Advances in Mesoporous Material 2015)
View Full-Text   |   Download PDF [1002 KB, uploaded 10 April 2015]   |  

Abstract

Mesoporous carbons were synthesized via both soft and hard template methods and compared to a commercial powder activated carbon (PAC) for the adsorption ability of bisphenol-A (BPA) from an aqueous solution. The commercial PAC had a BET-surface of 1027 m2/g with fine pores of 3 nm and less. The hard templated carbon (CMK-3) material had an even higher BET-surface of 1420 m2/g with an average pore size of 4 nm. The soft templated carbon (SMC) reached a BET-surface of 476 m2/g and a pore size of 7 nm. The maximum observed adsorption capacity (qmax) of CMK-3 was the highest with 474 mg/g, compared to 290 mg/g for PAC and 154 mg/g for SMC. The difference in adsorption capacities was attributed to the specific surface area and hydrophobicity of the adsorbent. The microporous PAC showed the slowest adsorption, while the ordered mesopores of SMC and CMK-3 enhanced the BPA diffusion into the adsorbent. This difference in adsorption kinetics is caused by the increase in pore diameter. However, CMK-3 with an open geometry consisting of interlinked nanorods allows for even faster intraparticle diffusion. View Full-Text
Keywords: ordered mesoporous carbons; hard template; soft template; adsorption; BPA ordered mesoporous carbons; hard template; soft template; adsorption; BPA
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Libbrecht, W.; Vandaele, K.; De Buysser, K.; Verberckmoes, A.; Thybaut, J.W.; Poelman, H.; De Clercq, J.; Van Der Voort, P. Tuning the Pore Geometry of Ordered Mesoporous Carbons for Enhanced Adsorption of Bisphenol-A. Materials 2015, 8, 1652-1665.

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