吸附
化学
聚乙烯醇
水溶液
弗伦德利希方程
纳米复合材料
壳聚糖
朗缪尔吸附模型
核化学
化学工程
解吸
傅里叶变换红外光谱
朗缪尔
镉
有机化学
工程类
作者
Iman Esmaeili,Fariba Soltanolkottabi,Firozeh Hosseini,Hojat Jafari
标识
DOI:10.1002/jccs.202300332
摘要
Abstract Chitosan (CTS) and polyvinyl alcohol (PVA) are two environmentally friend polymers. In this research, methacrylate‐modified FDU‐12 (FDU‐12‐NH 2 ) nanoparticle was synthesized. It was used in the preparation of CTS/PVA/FDU‐12‐NH 2 (2%, 5% w) composites. Fourier transfer infrared spectroscopy, nitrogen adsorption/desorption, and transmission electron microscopy techniques were applied for the characteristics of the composites. Then, the produced composites were used as the adsorbents to remove cadmium (II) from the aqueous solutions. The optimal conditions of the Cd (II) adsorption factors were achieved. The different isotherms and kinetic models were applied to obtain the equilibrium adsorption information. The results indicated that Freundlich isotherm was the best isotherm model. Also, the kinetic model followed the pseudo‐second‐order. The maximum adsorption capacities were found 125 and 200 mgg −1 of the adsorbents by the Langmuir model. The results showed that the synthesized nanocomposite exhibited a good adsorbent for cadmium metal in the aqueous solution.
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