Fabrication of pt nanoparticles-decorated cvd diamond electrode for biosensor applications

Min Jung Song, Jong Hoon Kim, Seung Koo Lee, Dae Soon Lim

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

An electrochemical biosensor was developed using boron-doped diamond (BDD) as an electrode material. To enhance the electrical performance of the electrode, the BDD electrode was decorated with Pt-nanoparticles (Pt-NPs) by electrochemical deposition. Their morphology according to the applied potentials for the synthesis of Pt-NPs was characterized by SEM. To identify the performance of the electrode modified with Pt-NPs, glucose detection was used as a sample sensing process, and the results were compared with those of a gold electrode and a bare BDD electrode. The electrochemical characteristics of the modified electrode were examined by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The BDD electrode with the Pt-NPs showed higher sensitivity and a lower detection limit than the Au electrode and BDD electrode. The proposed biosensor based on the Pt-NPs decorated BDD electrode showed high sensitivity, a low detection limit, fast direct electron transfer and good stability.

Original languageEnglish
Pages (from-to)985-989
Number of pages5
JournalAnalytical Sciences
Volume27
Issue number10
DOIs
Publication statusPublished - 2011

ASJC Scopus subject areas

  • Analytical Chemistry

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