Chemistry Department, College of Science, IMSIU (Imam Mohammad Ibn Saud Islamic University), P.O. Box 5701, Riyadh 11432, Saudi Arabia; Department of Chemistry, Faculty of Science, Port Said University, Port Said 42521, Egypt.
Chemistry Department, College of Science, IMSIU (Imam Mohammad Ibn Saud Islamic University), P.O. Box 5701, Riyadh 11432, Saudi Arabia; Textile Engineering Laboratory, Higher Institute of Technological Studies of Ksar, University of Monastir, Hellal, Tunisia.
Int J Biol Macromol. 2024 Jul;273(Pt 1):133015. doi: 10.1016/j.ijbiomac.2024.133015. Epub 2024 Jun 8.
Cosmetics, textiles, foodstuffs, and medicines frequently contain the yellow dye tartrazine. It has carcinogenic properties and can trigger allergies. In this study, a unique NH-MIL-101(Cr)/chitosan composite (MIL/chitosan composite) was created using a hydrothermal process. The effectiveness of this composite in removing Tartrazine (TZ) from aqueous solutions was investigated. It was characterized via FT-IR, XPS, XRD, and BET analysis. The surface area of the MIL/chitosan nanoadsorbent sample was 1256.64 m/g, where after five times recycling, it was reduced to 1068.14 m/g. The study analyzed the impact of dye concentration, pH, temperature, and MIL/chitosan composite dosage. Experimental measurements were taken for the equilibrium isotherms of dye adsorption. The kinetic models and adsorption isotherm were used to analyze the results. The adsorption process was found to match Langmuir and pseudo-second-order kinetic models. Chemisorption was the mechanism of the adsorption process. Based on thermodynamic parameters, it was determined that the adsorption process was endothermic. The MIL/chitosan composite was recycled up to five cycles. Using the MIL/chitosan composite towards the adsorption of the tartrazine from the real sample has been checked. The interaction process between the MIL/chitosan nanoadsorbent and Tartrazine adsorbate has been investigated. The TZ electrical characteristics, reactivity, and shape were ascertained through the application of density functional theory (DFT). The placement of electrophilic and nucleophilic attack sites is in good agreement with the molecular orbitals (HOMO and LUMO) and MEP results, according to DFT. The optimization of adsorption results was accomplished using Box-Behnken design (BBD).
化妆品、纺织品、食品和药品经常含有黄色染料柠檬黄。它具有致癌性，并可能引发过敏。在这项研究中，使用水热法制备了一种独特的 NH-MIL-101(Cr)/壳聚糖复合材料（MIL/壳聚糖复合材料）。研究了该复合材料从水溶液中去除柠檬黄（TZ）的效果。通过 FT-IR、XPS、XRD 和 BET 分析对其进行了表征。MIL/壳聚糖纳米吸附剂样品的表面积为 1256.64 m/g，经过五次回收后，表面积降至 1068.14 m/g。该研究分析了染料浓度、pH 值、温度和 MIL/壳聚糖复合材料用量的影响。对染料吸附的平衡等温线进行了实验测量。使用动力学模型和吸附等温线对结果进行了分析。吸附过程符合朗缪尔和准二级动力学模型。吸附过程的机制是化学吸附。根据热力学参数，确定吸附过程是吸热的。MIL/壳聚糖复合材料已回收使用达 5 个循环。使用 MIL/壳聚糖复合材料对实际样品中的柠檬黄进行吸附已得到验证。研究了 MIL/壳聚糖纳米吸附剂和柠檬黄吸附物之间的相互作用过程。通过应用密度泛函理论（DFT）确定了 TZ 的电特性、反应性和形状。根据 DFT，亲电和亲核攻击位点的位置与分子轨道（HOMO 和 LUMO）和 MEP 结果吻合较好。使用 Box-Behnken 设计（BBD）对吸附结果进行了优化。
