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Nanostructuring Platinum Nanoparticles on Multilayered Graphene Petal Nanosheets for Electrochemical Biosensing
Author(s) -
Claussen Jonathan C.,
Kumar Anurag,
Jaroch David B.,
Khawaja M. Haseeb,
Hibbard Allison B.,
Porterfield D. Marshall,
Fisher Timothy S.
Publication year - 2012
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201200551
Subject(s) - materials science , biosensor , nanotechnology , graphene , nanomaterials , detection limit , nanoparticle , carbon nanotube , nanoscopic scale , nanostructure , glucose oxidase , statistics , mathematics
Hybridization of nanoscale metals and carbon nanotubes into composite nanomaterials has produced some of the best‐performing sensors to date. The challenge remains to develop scalable nanofabrication methods that are amenable to the development of sensors with broad sensing ranges. A scalable nanostructured biosensor based on multilayered graphene petal nanosheets (MGPNs), Pt nanoparticles, and a biorecognition element (glucose oxidase) is presented. The combination of zero‐dimensional nanoparticles on a two‐dimensional support that is arrayed in the third dimension creates a sensor platform with exceptional characteristics. The versatility of the biosensor platform is demonstrated by altering biosensor performance (i.e., sensitivity, detection limit, and linear sensing range) through changing the size, density, and morphology of electrodeposited Pt nanoparticles on the MGPNs. This work enables a robust sensor design that demonstrates exceptional performance with enhanced glucose sensitivity (0.3 µ M detection limit, 0.01–50 m M linear sensing range), a long stable shelf‐life (>1 month), and a high selectivity over electroactive, interfering species commonly found in human serum samples.