Electrochemical Oxidation Behavior of Nitrogen Dioxide for Gas Detection Using Boron Doped Diamond Electrodes

Yunita Triana, Irkham, Yasuaki Einaga

Research output: Contribution to journalArticlepeer-review

Abstract

The electrochemical oxidation reaction of nitrogen dioxide (NO2) using boron doped diamond (BDD) electrodes is presented. Cyclic voltammetry of NO2 in a 0.1 M KClO4 solution exhibits oxidation peaks at +1.1 V and +1.5 V (vs. Ag/AgCl) which are attributable to oxidation of HONO and NO2, respectively. Moreover, the pH and scan rate dependences were investigated to study the oxidation mechanism. A linear calibration curve was observed in the concentration range of ∼1 to 5 mM (R2=0.99) with a detection limit of 11.1 ppb (S/B=3) for HONO and 58.6 ppb (S/B=3) for NO2. In addition, the analytical performance was compared with those using glassy carbon, platinum and stainless steel as the working electrode.

Original languageEnglish
JournalElectroanalysis
DOIs
Publication statusAccepted/In press - 2021

Keywords

  • Boron-doped diamond
  • Electrochemical analysis
  • Gas sensor
  • Nitrogen dioxide

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry

Fingerprint

Dive into the research topics of 'Electrochemical Oxidation Behavior of Nitrogen Dioxide for Gas Detection Using Boron Doped Diamond Electrodes'. Together they form a unique fingerprint.

Cite this