Journal
SENSORS
Volume 16, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/s16020243
Keywords
one-pot synthesis; biosensor; magnetite Prussian blue nano-composites
Funding
- National Natural Science Foundation of China [21575022, 21535003]
- National High Technology Research and Development Program (863 Program) of China [2015AA020502]
- Open Research Fund of Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University
- Fundamental Research Funds for the Central Universities
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In this work, we presented a simple method to synthesize magnetite Prussian blue nano-composites (Fe3O4-PB) through one-pot hydrothermal process. Subsequently, the obtained nano-composites were used to fabricate a facile and effective glucose biosensor. The obtained nanoparticles were characterized using transmission electron microscopy, scanning electron microscopy, Fourier-transform infrared spectroscopy, UV-vis absorbance spectroscopy, cyclic voltammetry and chronoamperometry. The resultant Fe3O4-PB nanocomposites have magnetic properties which could easily controlled by an external magnetic field and the electro-catalysis of hydrogen peroxide. Thus, a glucose biosensor based on Fe3O4-PB was successfully fabricated. The biosensor showed super-electrochemical properties toward glucose detection exhibiting fast response time within 3 to 4 s, low detection limit of 0.5 mu M and wide linear range from 5 mu M to 1.2 mM with sensitivity of 32 mu A center dot mM(-1)center dot cm(-2) and good long-term stability.
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