Abd El-Monaem Eman M, Al Harby Nouf, Batouti Mervette El, Eltaweil Abdelazeem S
Department of Chemistry, Faculty of Science, Alexandria University, Alexandria 21934, Egypt.
Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia.
Nanomaterials (Basel). 2023 Dec 24;14(1):54. doi: 10.3390/nano14010054.
This study intended to fabricate a novel Fenton-like catalyst by supporting the rod-like MIL-88A and the magnetic tin ferrite nanoparticles (SnFeO) on the MXene sheets (MIL-88A/SnFeO@MXene). The well fabrication and determination of the MIL-88A/SnFeO@MXene properties were investigated using SEM, XPS, VSM, Zeta potential, XRD, and FTIR tools. The Fenton-like degradation reaction of CR by MIL-88A/SnFeO@MXene was thoroughly studied to identify the optimal proportions of the catalyst components, the impact of CR and HO concentrations, as well as the effect of raising the temperature and the pH medium of the catalytic system and the catalyst dosage. Kinetics studies were executed to analyze the decomposition of CR and HO using First-order and Second-order models. Furthermore, the degradation mechanism was proposed based on the scavenging test that proceeded in the presence of chloroform and t-butanol, in addition to the XPS analysis that clarified the participation of the containing metal species: Fe, Sn, and Ti, and the formation of a continual redox cycle. The obtained intermediates during the CR degradation were defined by GC-MS. A recyclability test was performed on MIL-88A/SnFeO@MXene during five runs of the Fenton-like degradation of CR molecules. Finally, the novel MIL-88A/SnFeO@MXene Fenton-like catalyst could be recommended as a propitious heterogeneous catalyst with a continuous redox cycle and a recyclability merit.
本研究旨在通过将棒状MIL-88A和磁性锡铁氧体纳米颗粒(SnFeO)负载在MXene片上(MIL-88A/SnFeO@MXene)来制备一种新型类芬顿催化剂。使用扫描电子显微镜(SEM)、X射线光电子能谱(XPS)、振动样品磁强计(VSM)、zeta电位、X射线衍射(XRD)和傅里叶变换红外光谱(FTIR)工具对MIL-88A/SnFeO@MXene的良好制备及其性能进行了研究。对MIL-88A/SnFeO@MXene对CR的类芬顿降解反应进行了深入研究,以确定催化剂各组分的最佳比例、CR和HO浓度的影响,以及提高催化体系温度和pH介质以及催化剂用量的效果。进行了动力学研究,以使用一级和二级模型分析CR和HO的分解。此外,除了通过XPS分析阐明含金属物种Fe、Sn和Ti的参与以及连续氧化还原循环的形成外,还基于在氯仿和叔丁醇存在下进行的清除试验提出了降解机制。通过气相色谱-质谱联用仪(GC-MS)确定了CR降解过程中得到的中间体。在对CR分子进行五次类芬顿降解运行期间,对MIL-88A/SnFeO@MXene进行了可回收性测试。最后,新型MIL-88A/SnFeO@MXene类芬顿催化剂可被推荐为一种具有连续氧化还原循环和可回收优点的优良多相催化剂。
Nanomaterials (Basel). 2023-12-24
Nanomaterials (Basel). 2024-7-30
Environ Sci Pollut Res Int. 2024-4
Polymers (Basel). 2025-3-25
Sci Total Environ. 2023-3-1
Materials (Basel). 2022-1-2