کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7232864 | 1470967 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
NiO nanoparticles modified with 5,10,15,20-tetrakis(4-carboxyl pheyl)-porphyrin: Promising peroxidase mimetics for H2O2 and glucose detection
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: NiO nanoparticles modified with 5,10,15,20-tetrakis(4-carboxyl pheyl)-porphyrin: Promising peroxidase mimetics for H2O2 and glucose detection NiO nanoparticles modified with 5,10,15,20-tetrakis(4-carboxyl pheyl)-porphyrin: Promising peroxidase mimetics for H2O2 and glucose detection](/preview/png/7232864.png)
چکیده انگلیسی
NiO nanoparticles (NPs) and 5,10,15,20-tetrakis(4-carboxyl pheyl)-porphyrin (H2TCPP) functionalized NiO nanoparticles (H2TCPP-NiO nanocomposites) have been prepared by a facile method and characterized by powder X-ray diffraction (XRD), transmission electron microscope (TEM) and Fourier transform infrared spectra (FTIR), respectively. NiO NPs and H2TCPP-NiO nanocomposites have been proven to function as peroxidase mimetics that can catalyze the reaction of peroxidase substrate 3,3â²,5,5â²-tetramethylbenzidine (TMB) in the presence of H2O2 to produce a blue color reaction. Kinetic analysis indicated that the catalytic behavior was in accord with typical Michaelis-Menten kinetics. And these nanoparticles also exhibited strong affinity for the substrates of 3,3,5,5-tetramethylbiphenyl dihydrochloride (TMB). Experimental results showed that H2TCPP-NiO NPs exhibited a high sensitivity and a low detection limit towards H2O2 (8.0Ã10â6Â M). The H2TCPP-NiO NPs/glucose oxidase (GOx)/TMB system provides a novel colorimetric sensor for glucose and shows good response toward glucose detection over arrange of 0.05-0.50Â mM with a limit of detection 2.0Ã10â5Â M. Fluorescence probe experiments demonstrated that the peroxidase-like activity of H2TCPP-NiO NPs originated from the generation of OH radical. Thus it may provide great potential applications in biomedicine, biotechnology and environmental chemistry.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosensors and Bioelectronics - Volume 64, 15 February 2015, Pages 147-153
Journal: Biosensors and Bioelectronics - Volume 64, 15 February 2015, Pages 147-153
نویسندگان
Qingyun Liu, Yanting Yang, Hui Li, Renren Zhu, Qian Shao, Shanguang Yang, Jingjing Xu,