Metal-Organic Frameworks of MIL-100(Fe, Cr) and MIL-101(Cr) for Aromatic Amines Adsorption from Aqueous Solutions

被引：58
作者：
Chen, Mao-Long [1 ]
Zhou, Shu-Yang [1 ]
Xu, Zhou [1 ]
Ding, Li [1 ]
Cheng, Yun-Hui [1 ]
机构：
[1] Changsha Univ Sci & Technol, Coll Chem & Food Engn, Changsha 410114, Hunan, Peoples R China
来源：
MOLECULES | 2019年 / 24卷 / 20期
基金：
中国国家自然科学基金;
关键词：
metal-organic framework; adsorption; aromatic amines; aniline; 1-naphthalamine; o-toluidine; 2-amino-4-nitrotoluene; 2-nitroaniline; REMOVAL; WATER; TRANSFORMATION; ENCAPSULATION; DEGRADATION; CARBOXYLATE; TOBACCO; MOFS;
D O I：
10.3390/molecules24203718
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
MIL-100(Fe, Cr) and MIL-101(Cr) were synthesized by the hydrothermal method and applied to the adsorptions of five aromatic amines from aqueous solutions. These three metal-organic frameworks (MOFs) were well characterized by powder X-ray diffraction (PXRD), scanning electron microscope (SEM), transmission electron microscope (TEM), thermogravimetric analysis (TGA) and surface area analysis. The adsorption mechanism of three MOFs and the effects of the structures of MOFs on the adsorption of aromatic amines were discussed. The results show that the cavity system and suitable hydrogen bond acceptor were important factors for the adsorption for five aromatic amines of aniline, 1-naphthalamine, o-toluidine, 2-amino-4-nitrotoluene and 2-nitroaniline: (a) the saturated adsorption capacity of aniline, 1-naphthylamine and o-toluidine on MIL-100(Fe) were 52.0, 53.4 and 49.6 mg/g, respectively, which can be attributed to the intermolecular hydrogen bond interaction and cavity system diffusion. (b) The adsorption capacity of 2-nitroaniline and 2-amino-4-nitrotoluene on MIL-101(Cr) were 54.3 and 25.0 mg/g, respectively, which can be attributed to the more suitable pore size of MIL-101(Cr) than that of MIL-100(Fe, Cr). The MOFs of MIL-100(Fe) and MIL-101(Cr) can be potential materials for removing aromatic amines from aqueous solutions.
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页数：13
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