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6CCVD Research

In Situ ATR-IR Observation of the Electrochemical Oxidation of a Polycrystalline Boron-Doped Diamond Electrode in Acidic Solutions

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2018-11-20
JournalThe Journal of Physical Chemistry C
AuthorsTaiga Ogose, Seiji Kasahara, Norihito Ikemiya, Nagahiro Hoshi, Yasuaki Einaga
InstitutionsKeio University, Chiba University
Citations16

Abstract

Section titled ā€œAbstractā€

Electrochemical surface oxidation in acidic solutions was investigated on a boron-doped diamond film electrode, fabricated on a silicon prism, using attenuated total reflection infrared spectroscopy. At positive potentials above +1.3 V (reversible hydrogen electrode, RHE), the bands of surface oxygen species appear at 1745 and 1250 cm-1. Since these bands exhibit no isotope shift in deuterium solution, they are assigned to the Cā•O and C-O stretching modes, respectively. These bands have the maximum intensity at +3.3 V (RHE) and reversibly disappear around +0.9 V (RHE) in the potential step to the negative direction. The potentials at which the bands appear and disappear are identical to those of the anodic and cathodic peaks of the cyclic voltammogram, respectively.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 1992 - The Properties of Natural and Synthetic Diamond

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