Development of modified mesoporous carbon (CMK-3) for improved adsorption of bisphenol-A

Yunjae Jeong; Mingcan Cui; Jongbok Choi; Yonghyeon Lee; Jeonggwan Kim; Younggyu Son; Jeehyeong Khim

doi:10.1016/j.chemosphere.2019.124559

Development of modified mesoporous carbon (CMK-3) for improved adsorption of bisphenol-A

Yunjae Jeong, Mingcan Cui, Jongbok Choi, Yonghyeon Lee, Jeonggwan Kim, Younggyu Son, Jeehyeong Khim

School of Civil, Environmental and Architectural Engineering

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

The adsorption of bisphenol-A (BPA) on ordered mesoporous carbon (CMK-3) and modified CMK-3 (MCMK-3) for decontamination of aqueous medium was investigated. The CMK-3 and MCMK-3 materials had uniform pore sizes of 3.60 and 3.70 nm and high Brunauer-Emmett-Teller (BET) surface areas of 751 and 564 m² g⁻¹, respectively. The maximum adsorption capacities of CMK-3 and MCMK-3 were 178.57 (0.24 mg m⁻²) and 238.01 (0.42 mg m⁻²) mg g⁻¹, respectively at 298 K (pH 6.4). The difference in the adsorption capacities is attributed to the specific surface area and hydrophobicity of the adsorbents. The adsorption of BPA on CMK-3 and MCMK-3 may be influenced by π-π bonding and hydrophobic and electrostatic interactions, and the excellent adsorption capacity of MCMK-3 is attributed to its unique sp2-hybridized single-atom-layer structure. The kinetics and isotherm data were described by the pseudo-second order kinetic model and the Langmuir isotherm, respectively. This difference in the adsorption kinetics of CMK-3 and MCMK-3 is caused by the increase in the pore diameter of the latter. Further, CMK-3 and MCMK-3, with an open geometry consisting of interlinked nanorods, allow for faster intraparticle diffusion. Overall, CMK-3 and MCMK-3 could be promising adsorbents for the removal of chemicals containing benzene rings from wastewater.

Original language	English
Article number	124559
Journal	Chemosphere
Volume	238
DOIs	https://doi.org/10.1016/j.chemosphere.2019.124559
Publication status	Published - 2020 Jan 1

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Keywords

Activation energy
Bisphenol-A
Gigs free energy
Modified CMK-3
Ordered mesoporous carbons CMK-3

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Chemistry(all)
Pollution
Health, Toxicology and Mutagenesis

Cite this

Jeong, Y., Cui, M., Choi, J., Lee, Y., Kim, J., Son, Y., & Khim, J. (2020). Development of modified mesoporous carbon (CMK-3) for improved adsorption of bisphenol-A. Chemosphere, 238, [124559]. https://doi.org/10.1016/j.chemosphere.2019.124559

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title = "Development of modified mesoporous carbon (CMK-3) for improved adsorption of bisphenol-A",

abstract = "The adsorption of bisphenol-A (BPA) on ordered mesoporous carbon (CMK-3) and modified CMK-3 (MCMK-3) for decontamination of aqueous medium was investigated. The CMK-3 and MCMK-3 materials had uniform pore sizes of 3.60 and 3.70 nm and high Brunauer-Emmett-Teller (BET) surface areas of 751 and 564 m2 g−1, respectively. The maximum adsorption capacities of CMK-3 and MCMK-3 were 178.57 (0.24 mg m−2) and 238.01 (0.42 mg m−2) mg g−1, respectively at 298 K (pH 6.4). The difference in the adsorption capacities is attributed to the specific surface area and hydrophobicity of the adsorbents. The adsorption of BPA on CMK-3 and MCMK-3 may be influenced by π-π bonding and hydrophobic and electrostatic interactions, and the excellent adsorption capacity of MCMK-3 is attributed to its unique sp2-hybridized single-atom-layer structure. The kinetics and isotherm data were described by the pseudo-second order kinetic model and the Langmuir isotherm, respectively. This difference in the adsorption kinetics of CMK-3 and MCMK-3 is caused by the increase in the pore diameter of the latter. Further, CMK-3 and MCMK-3, with an open geometry consisting of interlinked nanorods, allow for faster intraparticle diffusion. Overall, CMK-3 and MCMK-3 could be promising adsorbents for the removal of chemicals containing benzene rings from wastewater.",

keywords = "Activation energy, Bisphenol-A, Gigs free energy, Modified CMK-3, Ordered mesoporous carbons CMK-3",

author = "Yunjae Jeong and Mingcan Cui and Jongbok Choi and Yonghyeon Lee and Jeonggwan Kim and Younggyu Son and Jeehyeong Khim",

year = "2020",

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doi = "10.1016/j.chemosphere.2019.124559",

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T1 - Development of modified mesoporous carbon (CMK-3) for improved adsorption of bisphenol-A

AU - Jeong, Yunjae

AU - Cui, Mingcan

AU - Choi, Jongbok

AU - Lee, Yonghyeon

AU - Kim, Jeonggwan

AU - Son, Younggyu

AU - Khim, Jeehyeong

PY - 2020/1/1

Y1 - 2020/1/1

N2 - The adsorption of bisphenol-A (BPA) on ordered mesoporous carbon (CMK-3) and modified CMK-3 (MCMK-3) for decontamination of aqueous medium was investigated. The CMK-3 and MCMK-3 materials had uniform pore sizes of 3.60 and 3.70 nm and high Brunauer-Emmett-Teller (BET) surface areas of 751 and 564 m2 g−1, respectively. The maximum adsorption capacities of CMK-3 and MCMK-3 were 178.57 (0.24 mg m−2) and 238.01 (0.42 mg m−2) mg g−1, respectively at 298 K (pH 6.4). The difference in the adsorption capacities is attributed to the specific surface area and hydrophobicity of the adsorbents. The adsorption of BPA on CMK-3 and MCMK-3 may be influenced by π-π bonding and hydrophobic and electrostatic interactions, and the excellent adsorption capacity of MCMK-3 is attributed to its unique sp2-hybridized single-atom-layer structure. The kinetics and isotherm data were described by the pseudo-second order kinetic model and the Langmuir isotherm, respectively. This difference in the adsorption kinetics of CMK-3 and MCMK-3 is caused by the increase in the pore diameter of the latter. Further, CMK-3 and MCMK-3, with an open geometry consisting of interlinked nanorods, allow for faster intraparticle diffusion. Overall, CMK-3 and MCMK-3 could be promising adsorbents for the removal of chemicals containing benzene rings from wastewater.

AB - The adsorption of bisphenol-A (BPA) on ordered mesoporous carbon (CMK-3) and modified CMK-3 (MCMK-3) for decontamination of aqueous medium was investigated. The CMK-3 and MCMK-3 materials had uniform pore sizes of 3.60 and 3.70 nm and high Brunauer-Emmett-Teller (BET) surface areas of 751 and 564 m2 g−1, respectively. The maximum adsorption capacities of CMK-3 and MCMK-3 were 178.57 (0.24 mg m−2) and 238.01 (0.42 mg m−2) mg g−1, respectively at 298 K (pH 6.4). The difference in the adsorption capacities is attributed to the specific surface area and hydrophobicity of the adsorbents. The adsorption of BPA on CMK-3 and MCMK-3 may be influenced by π-π bonding and hydrophobic and electrostatic interactions, and the excellent adsorption capacity of MCMK-3 is attributed to its unique sp2-hybridized single-atom-layer structure. The kinetics and isotherm data were described by the pseudo-second order kinetic model and the Langmuir isotherm, respectively. This difference in the adsorption kinetics of CMK-3 and MCMK-3 is caused by the increase in the pore diameter of the latter. Further, CMK-3 and MCMK-3, with an open geometry consisting of interlinked nanorods, allow for faster intraparticle diffusion. Overall, CMK-3 and MCMK-3 could be promising adsorbents for the removal of chemicals containing benzene rings from wastewater.

KW - Activation energy

KW - Bisphenol-A

KW - Gigs free energy

KW - Modified CMK-3

KW - Ordered mesoporous carbons CMK-3

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C2 - 31446279

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VL - 238

JO - Chemosphere

JF - Chemosphere

SN - 0045-6535

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10.1016/j.chemosphere.2019.124559