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  • Title: Electrochemical deposition of Pt nanoparticles on carbon nanotube patterns for glucose detection.
    Author: Zeng Z, Zhou X, Huang X, Wang Z, Yang Y, Zhang Q, Boey F, Zhang H.
    Journal: Analyst; 2010 Jul; 135(7):1726-30. PubMed ID: 20436966.
    Abstract:
    Single-walled carbon nanotube (SWCNT) microarrays are successfully patterned on SiO(2) substrates based on an evaporation-induced self-assembly mechanism. On these SWCNT micropatterns, the highly electroactive polycrystalline Pt nanoparticles (PtNPs) are deposited by using the electrochemical method. The obtained PtNP-SWCNT nanocomposites exhibit a low detection limit for hydrogen peroxide (4 microM). The further investigation on a glucose oxidase (GOx)/BSA/PtNP-SWCNT based biosensor indicates that the detection limit and sensitivity for glucose are 0.04 mM and 4.54 microA mM(-1) cm(-2), respectively. Our results prove that the improved electrocatalytic activity originates from the PtNP-SWCNT micropatterns, which provide a potential platform to immobilize different enzymes used for bioelectrochemical applications.
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