title: Fabrication of Pt nanoparticles-decorated CVD diamond electrode for biosensor applications.
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.
authors: School of Material and Science Engineering, Korea University, Seoul, Korea.
authors: Min-Jung
authors: MJ
authors: Song
authors: Jong-Hoon
authors: JH
authors: Kim
authors: Seung-Koo
authors: SK
authors: Lee
authors: Dae-Soon
authors: DS
authors: Lim
mesh_terms: D015374:Biosensing Techniques; D055664:Electrochemical Techniques; D004563:Electrochemistry; D004566:Electrodes; D053768:Metal Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D010984:Platinum / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D010984:Platinum