TY - JOUR
T1 - Oxidation reaction of dissolved hydrogen sulfide using boron doped diamond
AU - Triana, Yunita
AU - Tomisaki, Mai
AU - Einaga, Yasuaki
N1 - Funding Information:
This work is supported by JST ( Japan Science and Technology Agency - ACCEL (Strategic Basic Research Programs ): Fundamentals and Applications of Diamond Electrodes, and Grant-in-Aid for Scientific Research A 19H00832 . The paper gets support from Indonesia Endowment Fund for Education Scholarship, Ministry of Finance , LPDP.
Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2020/9/15
Y1 - 2020/9/15
N2 - We studied an oxidation reaction of dissolved hydrogen sulfide using boron doped diamond (BDD) electrodes and 0.1 mol Lˉ1 KClO4 as an electrolyte. Oxidation of H2S and HSˉ started at potentials of +1.7 V and + 0.5 V (vs. Ag/AgCl), respectively. In order to study the oxidation behavior, the effects of pH and the scan rate were investigated. Moreover, as demonstrated by X-ray photoelectron spectroscopy, no sulfur fouling was detected on the BDD surface. A linear calibration curve was observed in the concentration range of 0.08–2.34 mg Lˉ1 (r2 = 0.99) with a detection limit of 0.82 μg Lˉ1 (S/N = 3). In addition, an interference test with CO2 was performed, which showed there was no significant interference to the sensor.
AB - We studied an oxidation reaction of dissolved hydrogen sulfide using boron doped diamond (BDD) electrodes and 0.1 mol Lˉ1 KClO4 as an electrolyte. Oxidation of H2S and HSˉ started at potentials of +1.7 V and + 0.5 V (vs. Ag/AgCl), respectively. In order to study the oxidation behavior, the effects of pH and the scan rate were investigated. Moreover, as demonstrated by X-ray photoelectron spectroscopy, no sulfur fouling was detected on the BDD surface. A linear calibration curve was observed in the concentration range of 0.08–2.34 mg Lˉ1 (r2 = 0.99) with a detection limit of 0.82 μg Lˉ1 (S/N = 3). In addition, an interference test with CO2 was performed, which showed there was no significant interference to the sensor.
KW - Diamond electrodes
KW - Electrochemical analysis
KW - Gas sensor
KW - Hydrogen sulfide
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U2 - 10.1016/j.jelechem.2020.114411
DO - 10.1016/j.jelechem.2020.114411
M3 - Article
AN - SCOPUS:85088039755
SN - 1572-6657
VL - 873
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
M1 - 114411
ER -