2-Methylimidazole-modifi ed Iron Metal-organic Framework as an Effi cient Methylene Blue Adsorbent

IF 0.6 4区综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES Chiang Mai Journal of Science Pub Date : 2022-11-30 DOI:10.12982/cmjs.2022.104

Yingxin Zhao, Hao Hu, Shengyu Zhang, S. Feng, Yun Yang, Xiongjian Li, Shuijin Yang

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引用次数: 1

Abstract

Metal organic frameworks have a wide range of applications in the fi eld of environmental remediation. In this study, Fe-BDC/Fe-2MI composites were synthesized by one-pot solvothermal method. By studying the adsorption performance of methylene blue (MB) in wastewater, it was confi rmed that Fe-BDC/Fe-2MI has excellent adsorption properties. When the initial molar ratio of FeCl3 .6H2O: H2BDC: 2-MI is 1:1.5:10, the adsorbent has the best adsorption performance. At the same time, the effects of different pH (2-10), temperature (303-323K) and initial concentration of adsorbate (30-90mg/L) on the adsorption capacity were further explored. It was found that when pH=6.0, T=303K was favorable for Fe-BDC/Fe-2MI to adsorb MB. The adsorption process conformed to the Langmuir isotherm adsorption model, indicating that it was a monolayer adsorption which was a good adsorption process. Thermodynamic parameters show that the adsorption process is a spontaneous exothermic reaction. These results demonstrated that Fe-BDC/Fe-2MI composites possess potential practical application value.

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2-甲基咪唑修饰铁金属有机骨架作为高效亚甲基蓝吸附剂的研究

金属有机骨架在环境修复领域有着广泛的应用。本研究采用一锅溶剂热法制备了Fe-BDC/Fe-2MI复合材料。通过对废水中亚甲基蓝(MB)的吸附性能研究，证实了Fe-BDC/Fe-2MI具有优异的吸附性能。当FeCl3 .6 h2o: H2BDC: 2-MI的初始摩尔比为1:1.5:10时，吸附剂的吸附性能最好。同时，进一步探讨了不同pH(2 ~ 10)、温度(303 ~ 323k)、吸附质初始浓度(30 ~ 90mg/L)对吸附量的影响。发现当pH=6.0, T=303K时有利于Fe-BDC/Fe-2MI对MB的吸附，吸附过程符合Langmuir等温吸附模型，表明为单层吸附，是一种良好的吸附过程。热力学参数表明，吸附过程为自发放热反应。结果表明，Fe-BDC/Fe-2MI复合材料具有潜在的实际应用价值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chiang Mai Journal of Science MULTIDISCIPLINARY SCIENCES-

CiteScore

1.00

自引率

25.00%

发文量

103

审稿时长

3 months

期刊介绍： The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science are welcomed except in areas such as agriculture, engineering and medical science which are outside the scope of the Journal. Currently, we focus on manuscripts in biology, chemistry, physics, materials science and environmental science. Papers in mathematics statistics and computer science are also included but should be of an applied nature rather than purely theoretical. Manuscripts describing experiments on humans or animals are required to provide proof that all experiments have been carried out according to the ethical regulations of the respective institutional and/or governmental authorities and this should be clearly stated in the manuscript itself. The Editor reserves the right to reject manuscripts that fail to do so.