吸附
X射线光电子能谱
化学
降级(电信)
咪唑酯
氢氧化物
钴
核化学
化学工程
无机化学
有机化学
电信
计算机科学
工程类
作者
Eman M. Abd El-Monaem,Mohamed Hosny,Abdelazeem S. Eltaweil
标识
DOI:10.1016/j.ces.2024.119707
摘要
This study aimed to remove doxycycline (DC) from wastewater via a synergistic effect between adsorption and Fenton-like degradation processes. For this purpose, cobalt–nickel-iron-layered double hydroxide/zeolitic imidazolate framework-8 (CoNiFe-LDH/ZIF-8) was designed to have a continuous redox cycle between the transition metals of CoNiFe-LDH. Furthermore, a high adsorption capacity is provided mainly by ZIF-8 which also endows electrons to the reduced metals of LDH via zinc-oxygen-metal (Zn-O-M) bonds. The morphology, chemical structure, surface charge, and crystallinity of CoNiFe-LDH/ZIF-8 were investigated. Adsorption percentage of DC onto CoNiFe-LDH/ZIF-8 was estimated to be 45.62 %, while the degradation percentage reached 98.5 % after 90 min. The removal mechanism was proposed based on the experimental results, Zeta Potential and X-ray photoelectron spectroscopy (XPS) analyses. In addition, Liquid Chromatography-Mass Spectrometry predicted the degradation pathways and the formed byproducts. Based on the promising reusability of CoNiFe-LDH/ZIF-8, it could be applied in industrial applications.
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