Sirach Ruksana, Dave Pragnesh N
Department of Chemistry, Sardar Patel University Vallabh Vidyanagar 388 120 Gujarat India
RSC Adv. 2023 Jul 20;13(32):21991-22006. doi: 10.1039/d3ra03331g. eCollection 2023 Jul 19.
The present study investigated the use of a nanocomposite, produced by reinforcing nanosize zinc ferrite (ZnFeO) in a porous β-CD based polymeric matrix (β-CD-E-T/ZnFeO), for the removal of Bisphenol A (BPA) from aqueous solutions adsorption. The thermal stability of the β-CD-based polymer and β-CD-E-T/ZnFeO nanocomposite were investigated using simultaneous thermal analysis at four heating rates. Non-isothermal isoconversion methods were employed to study the thermal degradation kinetics of the β-CD based polymer before and after ZnFeO nano-filling. The results showed that ZnFeO nano-reinforcement increased the activation energy barrier for the thermal degradation of the β-CD-based polymeric matrix. Adsorption experiments showed that the β-CD-E-T/ZnFeO nanocomposite exhibited very high BPA adsorption within 5 minutes. Isotherm, kinetics, and thermodynamic investigations revealed that the adsorption of BPA was multilayer adsorption on a heterogeneous β-CD-E-T/ZnFeO surface. The thermodynamic studies indicated that BPA adsorption on β-CD-E-T/ZnFeO was spontaneous and exothermic. Overall, the β-CD-E-T/ZnFeO nanocomposite showed less thermal degradation and high efficiency for removing BPA from contaminated water, indicating its potential as a promising material for wastewater treatment applications.
本研究考察了一种纳米复合材料的应用，该材料是通过在基于多孔β-环糊精的聚合物基体（β-CD-E-T/ZnFeO）中增强纳米尺寸的铁酸锌（ZnFeO）制备而成，用于从水溶液吸附中去除双酚A（BPA）。使用同步热分析在四种加热速率下研究了基于β-环糊精的聚合物和β-CD-E-T/ZnFeO纳米复合材料的热稳定性。采用非等温热重转换方法研究了ZnFeO纳米填充前后基于β-环糊精的聚合物的热降解动力学。结果表明，ZnFeO纳米增强提高了基于β-环糊精的聚合物基体热降解的活化能垒。吸附实验表明，β-CD-E-T/ZnFeO纳米复合材料在5分钟内表现出非常高的BPA吸附量。等温线、动力学和热力学研究表明，BPA在β-CD-E-T/ZnFeO异质表面上的吸附为多层吸附。热力学研究表明，BPA在β-CD-E-T/ZnFeO上的吸附是自发的且放热的。总体而言，β-CD-E-T/ZnFeO纳米复合材料表现出较少的热降解，并且从受污染水中去除BPA的效率很高，表明其作为废水处理应用中有前景的材料的潜力。
