A study on the adsorption behaviors of three hydrophobic quinolones by ordered mesoporous CMK-3

吸附 介孔材料 疏水效应 水溶液 吸热过程 化学 化学工程 朗缪尔吸附模型 有机化学 催化作用 工程类
作者
Ruixiong Huang,Xin Li,Yuxi Wu,Zhishan Huang,Huiyi Ye,Yule Niu,Laisheng Li,Jing Wang
出处
期刊:Chemosphere [Elsevier BV]
卷期号:294: 133761-133761 被引量:16
标识
DOI:10.1016/j.chemosphere.2022.133761
摘要

In this work, a series of ordered mesoporous carbon nanomaterials (CMK-3) have been synthesized by a hard-template method at temperatures of 80 °C, 100 °C and 130 °C, which can serve as adsorbents for efficient adsorption of quinolones in aqueous solutions. The physicochemical properties and the morphologies of these CMK-3 have been well characterized, showing mesoporous channels with the specific surface area reaching up to 1290 m2/g. Adsorption studies have been performed on three hydrophobic quinolones: norfloxacin (NOR), ciprofloxacin (CIP) and enrofloxacin (ENR), with the adsorption capacities of 403 mg/g, 479 mg/g and 510 mg/g, respectively, at room temperature. The adsorption kinetics of the three quinolones are in accordance with the pseudo-second kinetic model, and the adsorption isotherm curves conform to Langmuir isotherm model. Significantly, the adsorption thermodynamics confirms that the adsorption processes are spontaneous endothermic. Finally, the adsorption mechanism has been discussed, which can be attributed to the synergistic effect of pore diffusion, hydrophobic bond, and electron donor-acceptor interaction.
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