Mohammadnejad Masoumeh, Nekoo Niosha Mokhtari, Alizadeh Sedighe, Sadeghi Soosan, Geranmayeh Shokoofeh
Department of Analytical Chemistry, Faculty of Chemistry, Alzahra University, Tehran, Iran.
Department of Physical Chemistry and Nanochemistry, Faculty of Chemistry, Alzahra University, Tehran, Iran.
Sci Rep. 2023 Oct 20;13(1):17981. doi: 10.1038/s41598-023-45075-6.
A novel, magnetic HKUST-1 MOF based on MgFeO-NH was designed and synthesized in two steps and applied effective removal of malachite green (MG), crystal violet (CV), and methylene blue (MB) from water samples. Characterization of the newly synthesized MgFeO-NH-HKUST-1 was performed by various techniques such as Fourier transform infrared spectroscopy, X-ray diffraction, Field emission scanning electron microscopy, Brunauer-Emmett-Teller, Thermal gravimetric analysis, and Vibration sampling magnetometry. Malachite green, crystal violet and methylene blue are toxic and mutagenic dyes that can be released into the water in different ways and cause many problems for human health and the environment. The removal of malachite green, crystal violet, and methylene blue from aqueous solutions was investigated using the magnetic HKUST-1 in this research. The effect of various parameters such as pH, amount of sorbent, dye concentration, temperature, and contact time on dye removal has been studied. The results showed that more than 75% of dyes were removed within 5 min. Adsorption isotherms, Kinetic, and thermodynamic studies were investigated. The results of this study show that adsorption capacity of the magnetic adsorbent is equal to 108.69 mg g for MG, 70.42 mg g for CV, and 156.25 mg g for MB. This study shows the good strategy for the synthesis of the functionalized magnetic form of HKUST-1 and its capability for increasing the efficiency of the removal process of malachite green, crystal violet, and methylene blue from an aqueous solution.
一种基于MgFeO-NH的新型磁性HKUST-1金属有机框架通过两步法设计并合成，并应用于从水样中有效去除孔雀石绿（MG）、结晶紫（CV）和亚甲基蓝（MB）。通过傅里叶变换红外光谱、X射线衍射、场发射扫描电子显微镜、布鲁诺尔-埃米特-特勒法、热重分析和振动采样磁强计等各种技术对新合成的MgFeO-NH-HKUST-1进行了表征。孔雀石绿、结晶紫和亚甲基蓝是有毒且具有致突变性的染料，它们可以通过不同方式释放到水中，对人类健康和环境造成许多问题。本研究使用磁性HKUST-1研究了从水溶液中去除孔雀石绿、结晶紫和亚甲基蓝的情况。研究了pH值、吸附剂用量、染料浓度、温度和接触时间等各种参数对染料去除的影响。结果表明，在5分钟内超过75%的染料被去除。对吸附等温线、动力学和热力学进行了研究。本研究结果表明，磁性吸附剂对MG的吸附容量为108.69 mg/g，对CV为70.42 mg/g，对MB为156.25 mg/g。本研究展示了合成功能化磁性形式的HKUST-1的良好策略及其提高从水溶液中去除孔雀石绿、结晶紫和亚甲基蓝过程效率的能力。
