Remarkable effect of deprotonation on adsorption of 3-MCPD and glycidol on carboxylated Fe-MIL-88s

被引：22
作者：
Ahn, Yongjun [1 ]
Choi, Sunggyu [1 ]
Kwak, Seung-Yeop [1 ,2 ,3 ]
机构：
[1] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 08826, South Korea
[2] Seoul Natl Univ, Res Inst Adv Mat RIAM, Seoul 08826, South Korea
[3] Seoul Natl Univ, Inst Engn Res, Seoul 08826, South Korea
来源：
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2020年 / 8卷 / 06期
关键词：
Fe-MIL-88; Carboxylation; 3-MCPD; Glycidol; Adsorption; Mechanism; METAL-ORGANIC-FRAMEWORKS; FATTY-ACID ESTERS; PALM OIL; REMOVAL; MODEL; WATER; NH2-MIL-88(FE); OPTIMIZATION; DEGRADATION; MIL-88(FE);
D O I：
10.1016/j.jece.2020.104456
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A selective adsorptive method using metal-organic frameworks (MOFs) was employed for removal of 3-MCPD and glycidol, which are potential genotoxic carcinogens. To optimize adsorption performance, a series of Fe MIL-88 s with different ligand types were used with further modification by sequential carboxylation and deprotonation processes. Among these ligands, the MOFs, consisting of 2,6-naphthalenedicarboxylic acid (FeMIL-88_BDC) showed the best adsorption performance. A rapid efficiency improvement of 3-MCPD and glycidol was observed after its surface modification. Despite lacking superior porosity, deprotonated Fe-MIL-88_BDC showed the highest adsorption capacity of the reported adsorbents. We found that the remarkable improvement in adsorption efficiency was due to esterification with carboxyl groups on 3-MCPD and glycidol. This adsorption performance was seen only in 3-MCPD ester and glycidyl ester (as a precursor of 3-MCPD and glycidol) in palm oil without a change of fatty composition and minor components.
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页数：7
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