Reproducible fabrication of stable small nano Pt with high activity for sensor applications.
Nanotechnology
; 24(29): 295503, 2013 Jul 26.
Article
em En
| MEDLINE
| ID: mdl-23807200
ABSTRACT
Pt nanoparticles with an average size of 2-3 nm in diameter were reproducibly synthesized by reduction of H2PtCl6 solution containing inositol hexaphosphate (IP6) as the stabilizing agent. Single crystals with Pt(111) faces of the resulting cubic nanoparticles were revealed by the electron diffraction pattern. The PtNPs-IP6 nanoparticles were used to modify an electrode as a nonenzymatic sensor for H2O2 detection, exhibiting a fast response and high sensitivity. A low detection limit of 2.0 × 10â»7 M (S/N = 3) with two linear ranges between 2.4 × 10â»7 and 1.3 × 10⻳ M (R² = 0.9987) and between 1.3 × 10⻳ and 1.3 × 10⻲ M (R² = 0.9980) was achieved. The attractive electrochemical performance of PtNPs-IP6 enables it to be employed as a promising material for the development of Pt-based analytical systems and other applications.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Platina
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Nanopartículas
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Técnicas Eletroquímicas
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Peróxido de Hidrogênio
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article