Iron-doped cerium/nucleotide coordination polymer as highly efficient peroxidase mimic for colorimetric detection of fluoride ion

被引：3

作者：

Yang, Fei ^{[1
]}

Wu, Xiaohong ^{[2
]}

Li, Chen ^{[2
]}

Chen, Yuxiao ^{[2
]}

Liu, Shu ^{[2
]}

Zhang, Cuiling ^{[1
]}

Xian, Yuezhong ^{[1
]}

机构：

[1] East China Normal Univ, Sch Chem & Mol Engn, Dept Chem, Shanghai Engn Res Ctr Mol Therapeut & New Drug De, Shanghai 200241, Peoples R China

[2] Tech Ctr Ind Prod & Raw Mat Inspect & Testing Sha, Shanghai 200135, Peoples R China

来源：

MICROCHIMICA ACTA | 2022年 / 189卷 / 09期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Peroxidase mimics; Colorimetric detection; Fluoride ion; Coordination polymer; Iron-doped cerium/nucleotide; HYDROGEN-PEROXIDE; FENTON REACTION; REACTION SYSTEM; NANOPARTICLES; NUCLEOTIDE; OXIDATION; NANOCERIA; GLUCOSE; ENZYMES; METAL;

D O I：

10.1007/s00604-022-05410-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new coordination polymer (Ce-Fe-GMP) with excellent catalytic activity was prepared by a facile route, which was further applied to the detection of F- with high sensitivity and selectivity. The simple doping of Fe3+ into the coordination network can easily modulate the mixing ratio of Ce3+ and Ce4+ in the presence of H2O2, which can extremely improve the catalytic ability of Ce-Fe-GMP. Based on the synergistic effect, the Ce-Fe-GMP with dual-active sites shows better peroxidase activity than that of Ce-GMP. In addition, we found that F- can inhibit the peroxidase activity of Ce-Fe-GMP because of the coordination structure fragmentation and the regulation of Ce3+/Ce4+ ratio. Therefore, different concentrations of F- can be detected by the colorimetric reaction based on this mechanism. The absorption at 652 nm displays a good linear relationship versus the concentration of F- over the range 2.0 to 100.0 mu M. Furthermore, F- in real mineral-mixed samples can be measured with satisfactory results. The colorimetric strategy based on the peroxidase activity of Ce-Fe-GMP is simple and low-cost, which shows the potential applications in the field of on-site environment measurement.

引用

页数：9

共 46 条

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