Ionic liquid coated iron nanoparticles are promising peroxidase mimics for optical determination of H2O2

被引：22
作者：
Zarif, Faiza [1 ]
Rauf, Sajid [2 ]
Qureshi, Muhammad Zahid [1 ]
Shah, Noor Samad [3 ]
Hayat, Akhtar [2 ]
Muhammad, Nawshad [2 ]
Rahim, Abdur [2 ]
Nawaz, Mian Hasnain [2 ]
Nasir, Muhammad [2 ]
机构：
[1] Govt Coll Univ, Dept Chem, Lahore 54000, Pakistan
[2] COMSATS Inst Informat Technol, IRCBM, Lahore 54000, Pakistan
[3] COMSATS Inst Informat Technol, Dept Environm Sci, Vehari 61100, Pakistan
来源：
MICROCHIMICA ACTA | 2018年 / 185卷 / 06期
关键词：
Zero-valent iron particles; Bismuth doping; Ionic liquid coated nanoparticles; TMB oxidation; Stabilizing agent; Peroxidasemimic; Visual detection; Hydrogen peroxide; HYDROGEN-PEROXIDE; COLORIMETRIC DETECTION; URIC-ACID; GLUCOSE; ENZYME; NANOCOMPOSITES; CHOLESTEROL; NANOSHEETS; ELECTRODE; TEMPLATE;
D O I：
10.1007/s00604-018-2841-3
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Ionic liquid coated nanoparticles (IL-NPs) consisting of zero-valent iron are shown to display intrinsic peroxidase-like activity with enhanced potential to catalyze the oxidation of the chromogenic substrate 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide. This results in the formation of a blue green colored product that can be detected with bare eyes and quantified by photometry at 652 nm. The IL-NPs were further doped with bismuth to enhance its catalytic properties. The Bi-doped IL-NPs were characterized by FTIR, X-ray diffraction and scanning electron microscopy. A colorimetric assay was worked out for hydrogen peroxide that is simple, sensitive and selective. Response is linear in the 30-300 mu M H2O2 concentration range, and the detection limit is 0.15 mu M.
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页数：9
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