Aqueous adsorption of sulfamethoxazole on an N-doped zeolite beta-templated carbon

JOURNAL OF COLLOID AND INTERFACE SCIENCE

卷:582

Article

Ahmed, Imteaz¹  Adhikary, Keshab K.²  Kim, Kyoungsoo³  Ahn, Wha-Seung¹ 

[1] Inha Univ, Dept Chem & Chem Engn, Incheon 402751, South Korea

[2] Univ Ghent, Ctr Environm & Energy Res, Global Campus, Incheon 21985, South Korea

[3] Jeonbuk Natl Univ, Dept Chem, Jeonju 54896, Jeollabuk Do, South Korea

关键词: Zeolite-templated carbon;    Adsorption;    Sulfamethoxazole;    pi-pi interaction;    Hydrogen bonding;   

DOI  :  10.1016/j.jcis.2020.08.065

来源: Elsevier

【 摘 要 】

A zeolite beta-templated carbon (BTC) and its N-doped form (nBTC) were prepared and used for the adsorptive removal of sulfamethoxazole (SMX) antibiotic from water. Both demonstrated excellent adsorption properties, and the maximum adsorption capacity of nBTC (1367 mg/g) was exceptionally high, and surpassed those of other adsorbents reported to date. Adsorption kinetic studies indicated that the adsorption was efficient, and adsorption equilibrium was reached within 10 min. The excellent adsorption performance of nBTC was attributed to the high-surface-area hydrophobic carbons with strong pi-pi interactions and H-bonding in the uniform microporous geometry of the material. The effect of the solution pH and thermodynamics of the adsorption process were subsequently investigated. nBTC was easily regenerated by washing with acetone, and a recyclability test confirmed that similar to 88% of the initial SMX adsorption capacity of nBTC was retained after the fifth adsorption-desorption cycle. Moreover, nBTC presented excellent capacity for the adsorptive removal of bisphenol A from water. (C) 2020 Elsevier Inc. All rights reserved.

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