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Green Photocatalytic Synthesis of Au Nanoparticles/Multi-walled Carbon Nanotubes Nanocomposites and their Application for Glucose Sensing

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In this communication, we report on a novel green photocatalytic route to synthesize Au nanoparticles/multi-walled carbon nanotubes (AuNPs/MWCNTs) nanocomposites with the use of Sn-porphyrin (SnP) as a high-efficiency photocatalyst to reduce Au3+ to form AuNPs onto MWCNTs. Such AuNPs/MWCNTs nanocomposites exhibit good catalytic performance toward both oxidation and reduction of H2O2. An electrochemical glucose biosensor was further constructed by dropping glucose oxidase on the surface of AuNPs/MWCNTs nanocomposites modified glassy carbon electrode. The biosensor shows linear response toward different concentrations of glucose from 1 to 33 mM (r = 0.998) and the detection limit at 0.5 V is estimated to be 240 μM at a signal-to-noise ratio of 3.
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Keywords: Au nanoparticles; biosensor; glucose; multi-walled carbon nanotubes; photocatalyst

Document Type: Research Article

Publication date: December 1, 2012

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  • Current Nanoscience publishes authoritative reviews and original research reports, written by experts in the field on all the most recent advances in nanoscience and nanotechnology. All aspects of the field are represented including nano- structures, synthesis, properties, assembly and devices. Applications of nanoscience in biotechnology, medicine, pharmaceuticals, physics, material science and electronics are also covered. The journal is essential to all involved in nanoscience and its applied areas.
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