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Quantum dots based platform for application to fish freshness biosensor
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DOI：10.1016/j.snb.2012.11.059.png)
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摘要
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Laser ablated tin oxide quantum dots (SnO2 QDs similar to 1-5 nm) uniformly dispersed in a colloidal solution have been electrophoretically deposited onto indium-tin-oxide (ITO) glass for immobilization of xanthine oxidase (XOx) for fabrication of fish freshness biosensor. The results of electrochemical response studies conducted on XOx/SnO2 QDs/ITO bio-electrode reveal higher sensitivity (0.5148 mu A/mu M cm(2)), lower K-m value (0.022 mu M), faster response time (10 s), and wide linear range of 1-400 mu M with regression coefficient as 0.999, higher charge transfer rate constant 1.63 s(-1). (c) 2012 Elsevier B.V. All rights reserved.
Keyword:
SnO2 QDs
Electrophoretic deposition
Xanthine oxidase
Electrochemical sensing
Fish freshness
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7.7
论文数:
3.4W
被引数:
12.6W
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