Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
Department of Chemistry, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
Int J Biol Macromol. 2018 Jul 15;114:1151-1160. doi: 10.1016/j.ijbiomac.2018.03.103. Epub 2018 Apr 5.
Calcon-imprinted magnetic chitosan (CIMC) nanoparticles (NPs) were successfully synthesized as a novel adsorbent. Epichlorohydrin (ECH) and glutaraldehyde (GA) were used as cross-linkers to synthesize desired calcon-imprinted magnetic chitosan (ECH/CIMC and GA/CIMC) and non-imprinted magnetic chitosan (ECH/NIMC and GA/NIMC) NPs for adsorption and removal of calcon from polluted solutions. Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM) techniques were employed to investigate the characteristics of ECH/CIMC and GA/CIMC. The effect of pH, temperature, adsorbent dosage and initial dye concentration was evaluated. The adsorption isotherm and kinetics were adequately described by Langmuir and pseudo second-order model, respectively. Maximum removal capacity by ECH/CIMC and GA/CIMC was computed as 51.71 and 39.23mg/g. Thermodynamic parameters were also estimated and results showed that the adsorption of calcon onto CIMC and NIMC was endothermic and that it is a spontaneous and favorable process.
成功合成了作为新型吸附剂的钙指示剂印迹磁性壳聚糖（CIMC）纳米粒子（NPs）。使用表氯醇（ECH）和戊二醛（GA）作为交联剂，合成所需的钙指示剂印迹磁性壳聚糖（ECH/CIMC 和 GA/CIMC）和非印迹磁性壳聚糖（ECH/NIMC 和 GA/NIMC）NPs，用于从污染溶液中吸附和去除钙指示剂。傅里叶变换红外光谱（FT-IR）和扫描电子显微镜（SEM）技术用于研究 ECH/CIMC 和 GA/CIMC 的特性。评估了 pH 值、温度、吸附剂用量和初始染料浓度的影响。吸附等温线和动力学分别由朗缪尔和准二级模型充分描述。ECH/CIMC 和 GA/CIMC 的最大去除容量计算为 51.71 和 39.23mg/g。还估算了热力学参数，结果表明，钙指示剂在 CIMC 和 NIMC 上的吸附是吸热的，这是一个自发和有利的过程。
