NH2-MIL-53(Al) nanocrystals: a fluorescent probe for the fast detection of aromatic nitro-compounds and ions in aqueous systems

被引：40
作者：
Xu, Shuo [1 ]
Ni, Yonghong [1 ]
机构：
[1] Anhui Normal Univ, Anhui Key Lab Funct Mol Solids, Coll Chem & Mat Sci, Key Lab Funct Mol Solids,Minist Educ,Anhui Lab Mo, 189 Jiuhua Southern Rd, Wuhu 241002, Peoples R China
来源：
ANALYST | 2019年 / 144卷 / 05期
基金：
中国国家自然科学基金;
关键词：
METAL-ORGANIC FRAMEWORKS; HIGHLY SELECTIVE DETECTIONS; NITROAROMATIC EXPLOSIVES; FE3+ IONS; MOF; EFFICIENT; REMOVAL; LIGANDS; SENSOR; AL;
D O I：
10.1039/c8an01976b
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
NH2-MIL-53(Al) nanocrystals were successfully fabricated by an improved solvothermal route at 120 degrees C for 24 h without the addition of any surfactants or capping agents, employing AlCl(3)6H(2)O and 2-amino terephthalic acid (NH2-BDC) as the initial reactants, and N,N-dimethylformamide (DMF) and water with a volume ratio of 5/25 as the mixed solvent. The as-obtained product was characterized by XRD, FESEM and FTIR. Under the excitation of 380 nm UV light, the as-obtained NH2-MIL-53(Al) nanocrystals displayed strong fluorescence emission. It was found that some aromatic nitro-compounds (ANCs) or ions in aqueous systems could strongly quench the above fluorescence, indicating that the as-obtained NH2-MIL-53(Al) nanocrystals could be made into a fluorescent probe for the detection of ANCs and ions in aqueous systems. Simultaneously, the mechanism to cause fluorescence quenching was discussed.
引用
收藏
页码：1687 / 1695
页数：9
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