Chemistry Department, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia; Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
Chemistry Department, Faculty of Science, Alexandria University, Alexandria, Egypt.
Mater Sci Eng C Mater Biol Appl. 2018 Nov 1;92:287-296. doi: 10.1016/j.msec.2018.06.060. Epub 2018 Jun 30.
A novel magnetic nanocomposite based on magnetite nanoparticles-functionalized-graphene oxide and hexadecyltrimethyl ammonium bromide has been synthesized (MAGO-CTAB) by a facile route for efficient, fast and sensitive binding with Sunset Yellow (SY). The MAGO-CTAB (27 ± 3 nm) has been successfully characterized by transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy and vibrating sample magnetization techniques. The influences of different experimental parameters on the % SY removal efficiency were fully investigated. The adsorption rates of SY by MAGO-CTAB were conducted by fitting the experimental data to four kinetic models. Langmuir, Freundlich, Temkin and Dubinin-Radushkevich (D-R) adsorption isotherms were applied to study SY removal. The adsorption-desorption stability performance of the novel magnetic nanosorbent was evaluated and confirmed after 5 cycles. The designed MAGO-CTAB was successfully utilized for removal of SY from different food and soft drink samples with excellent recoveries values (98-103%).
一种新型磁性纳米复合材料，基于磁铁矿纳米粒子功能化氧化石墨烯和十六烷基三甲基溴化铵，通过简便的方法合成（MAGO-CTAB），用于与日落黄（SY）高效、快速和灵敏地结合。MAGO-CTAB（27±3nm）已通过透射电子显微镜、X 射线衍射、傅里叶变换红外光谱和振动样品磁化技术成功进行了表征。充分研究了不同实验参数对%SY 去除效率的影响。通过将实验数据拟合到四个动力学模型来进行 MAGO-CTAB 对 SY 的吸附速率。应用 Langmuir、Freundlich、Temkin 和 Dubinin-Radushkevich（D-R）吸附等温线来研究 SY 的去除。在 5 个循环后，评估并证实了新型磁性纳米吸附剂的吸附-解吸稳定性性能。设计的 MAGO-CTAB 已成功用于从不同食品和软饮料样品中去除 SY，回收率值优异（98-103%）。
