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

Author(s): Qingzhen Li, Juan Du, Xiaoyun Qin, Yonglan Luo, Wenbo Lu, Guohui Chang, Chenjiao Ge, Abdullah M. Asiri, Abdulrahman O. Al-Youbi, Xuping Sun

Journal Name: Current Nanoscience

Volume 8 , Issue 6 , 2012

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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.

Keywords: Au nanoparticles, multi-walled carbon nanotubes, photocatalyst, glucose, biosensor

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Article Details

Year: 2012
Published on: 13 November, 2012
Page: [930 - 933]
Pages: 4
DOI: 10.2174/157341312803989196
Price: $65

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