Zinc Metal-Organic Framework for Selective Detection and Differentiation of Fe(III) and Cr(VI) Ions in Aqueous Solution

被引:191
作者
Lv, Rui [1 ]
Li, Hui [1 ]
Su, Jian [1 ]
Fu, Xin [1 ]
Yang, Boyi [1 ]
Gu, Wen [1 ]
Liu, Xin [1 ]
机构
[1] Nankai Univ, Tianjin Key Lab Met & Mol Based Mat Chem, Collaborat Innovat Ctr Chem Sci & Engn, Coll Chem,Key Lab Adv Energy Mat Chem MOE, Tianjin 300071, Peoples R China
基金
中国国家自然科学基金;
关键词
FLUORESCENT-PROBE; LUMINESCENT SENSOR; GOLD NANOPARTICLES; SMALL MOLECULES; SENSING IONS; MOF; WATER; EXPLOSIVES; ADSORPTION; CHROMIUM;
D O I
10.1021/acs.inorgchem.7b01822
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A new luminescent Zn(II)-based metal organic framework (MOF), [Zn-2(TPOM)(NDC)(2)]center dot 3.5H(2)O (Zn-MOF; TPOM = tetrakis(4-pyridyloxymethylene)methane and H(2)ndc = 2,6-naphthalenedicarboxylic acid), was successfully synthesized by a hydrothermal reaction. The MOF exhibits excellent luminescence emission, and it can detect Fe(III) and Cr(VI) ions with high selectivity, well antiinterference performance, and short response time. In addition, Zn-MOF was selected as a parent coordination compound to encapsulate Eu3+ cations to obtain a Eu3+-incorporated sample (Eu3+@Zn-MOF). Subsequently, we explored the potential application of Eu3+@Zn-MOF as a probe for the selective sensing of Fe(III) and Cr(VI) ions, and it revealed that we could differentiate Fe(III) and Cr(VI) ions by the combination Zn-MOF and Eu3+@Zn-MOF. More importantly, it represents the first example of MOF-based luminescent sensors which can detect and differentiate Fe(III) and Cr(VI) ions selectively. And the possible sensing mechanism was discussed in detail.
引用
收藏
页码:12348 / 12356
页数:9
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