由核桃壳制备的羧基功能化生物炭增强了水中磺胺类抗生素的吸附性能。
Carboxyl-functionalized biochar derived from walnut shells with enhanced aqueous adsorption of sulfonamide antibiotics.
机构信息
Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China.
Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, School of Chemistry and Materials Science, Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210023, China.
出版信息
J Environ Manage. 2021 Feb 15;280:111749. doi: 10.1016/j.jenvman.2020.111749. Epub 2020 Dec 9.
The novel HNO-modifitied biochar (NBC) was synthesized from walnut shell. The NBC was characterized from scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Raman spectrum. The NBC was then used in the adsorption of sulfadiazine, sulfamethazine and sulfachloropyridazine from aqueous solution. The material surface has carbon/oxygen-contained groups, which is benefit for the adsorption. The results showed the adsorption ability of NBC on three sulfonamides were 32, 46, and 40 mg g, respectively. The kinetic was found to follow the Elovich model and the isotherm conformed Freundlich. Adsorption was more favorable at weak acidic solution. The interactions mainly include π-π EDA, electrostatic interaction, Lewis acid-base interaction, hydrophobic interaction and H-bond.
新型 HNO 修饰生物炭（NBC）由核桃壳合成。NBC 通过扫描电子显微镜、傅里叶变换红外光谱、X 射线衍射、X 射线光电子能谱和拉曼光谱进行了表征。然后，NBC 被用于从水溶液中吸附磺胺嘧啶、磺胺甲恶唑和磺胺氯哒嗪。材料表面含有碳/氧基团，有利于吸附。结果表明，NBC 对三种磺胺类药物的吸附能力分别为 32、46 和 40mg/g。动力学符合 Elovich 模型，等温线符合 Freundlich。吸附在弱酸性溶液中更有利。相互作用主要包括π-π EDA、静电相互作用、路易斯酸碱相互作用、疏水相互作用和氢键。
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