Fabrication of Metal-Substituted Polyoxometalates for Colorimetric Detection of Dopamine and Ractopamine

被引：26
作者：
Duan, Xixin [1 ]
Bai, Zhixian [1 ]
Shao, Xueting [1 ]
Xu, Jian [2 ]
Yan, Ning [1 ,3 ]
Shi, Junyou [1 ]
Wang, Xiaohong [2 ]
机构：
[1] Beihua Univ, Jilin Prov Key Lab Wooden Mat Sci & Engn, Jilin 132013, Jilin, Peoples R China
[2] Northeast Normal Univ, Minist Educ, Key Lab Polyoxometalate Sci, Changchun 130024, Peoples R China
[3] Univ Toronto, Dept Chem Engn & Appl Chem, Toronto, ON M5S 3B3, Canada
来源：
MATERIALS | 2018年 / 11卷 / 05期
基金：
中国国家自然科学基金;
关键词：
polyoxometalates; peroxidase-like; colorimetric detection; dopamine; ractopamine; GOLD NANOPARTICLES; CANCER-CELLS; SENSOR; URINE; IMMUNOASSAY; PEROXIDASE; CATALYSTS; PROBE; ACID; H2O2;
D O I：
10.3390/ma11050674
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A novel colorimetric detection method based on the peroxidase-like activity of metal-substituted polyoxometalates (POMs) of SiW9M3 (M = Co2+, Fe3+, Cu2+, Mn2+) has been established. POMs can catalyze oxidation of dopamine (DA) and ractopamine (RAC) by H2O2 in aqueous solutions. SiW9Co3-based POMs detect DA at concentrations as low as 5.38 x 10(6) mol.L-1 simply by observation of the color change from colorless to orange using the naked eye. RAC is detected by observing the change from colorless to slight red by SiW9Cu3 with a detection limit of 7.94 x 10(-5) mol.L-1. This study shows that colorimetric DA and RAC detection using SiW9Co3 and SiW9Cu3 is highly selective and sensitive as well as visually observable.
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页数：11
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