Analysis of reaction of luminol at an indium-tin oxide anode by cyclic voltammetry

Yasuo Yoshimi, Kiyotaka Sakai

研究成果: Article

1 引用 (Scopus)

抄録

In the present study, cyclic voltammograms obtained with an indium-tin oxide (ITO) anode were compared with those obtained with a platinum anode. The peak currents generated by luminol oxidation at the platinum anode showed convex curves facing upwards with increasing luminol concentration, as the result of the prevention of the oxidation of the platinum electrode by the presence of luminol. With the ITO anode, no current due to electrode oxidation or reduction was detected. The peak current intensity of luminol oxidation was proportional to the luminol concentration, but the peak current was also in a linear relationship with the square root of the scan rate. However, the intercept current was largely deviated from zero. The deviation suggests radial diffusion of luminol at the ITO anode which has a small active point density. In conclusion, the ITO anode is useful for accurate measurement of the rate of luminol oxidation, but radial diffusion of luminol in the vicinity of the ITO surface should be taken into consideration in analysis of luminol oxidation.

元の言語English
ページ(範囲)535-538
ページ数4
ジャーナルJournal of Chemical Engineering of Japan
30
発行部数3
出版物ステータスPublished - 1997 6

Fingerprint

Luminol
Tin oxides
Indium
Cyclic voltammetry
Anodes
Oxidation
Platinum
Electrodes
indium tin oxide

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

これを引用

@article{6a42b4800faf4b92966a97e309dc6ec3,
title = "Analysis of reaction of luminol at an indium-tin oxide anode by cyclic voltammetry",
abstract = "In the present study, cyclic voltammograms obtained with an indium-tin oxide (ITO) anode were compared with those obtained with a platinum anode. The peak currents generated by luminol oxidation at the platinum anode showed convex curves facing upwards with increasing luminol concentration, as the result of the prevention of the oxidation of the platinum electrode by the presence of luminol. With the ITO anode, no current due to electrode oxidation or reduction was detected. The peak current intensity of luminol oxidation was proportional to the luminol concentration, but the peak current was also in a linear relationship with the square root of the scan rate. However, the intercept current was largely deviated from zero. The deviation suggests radial diffusion of luminol at the ITO anode which has a small active point density. In conclusion, the ITO anode is useful for accurate measurement of the rate of luminol oxidation, but radial diffusion of luminol in the vicinity of the ITO surface should be taken into consideration in analysis of luminol oxidation.",
keywords = "Cyclic Voltammetry, Electrochemiluminescence, Indium-tin Oxide, Luminol, Platinum, Reaction Engineering",
author = "Yasuo Yoshimi and Kiyotaka Sakai",
year = "1997",
month = "6",
language = "English",
volume = "30",
pages = "535--538",
journal = "Journal of Chemical Engineering of Japan",
issn = "0021-9592",
publisher = "Society of Chemical Engineers, Japan",
number = "3",

}

TY - JOUR

T1 - Analysis of reaction of luminol at an indium-tin oxide anode by cyclic voltammetry

AU - Yoshimi, Yasuo

AU - Sakai, Kiyotaka

PY - 1997/6

Y1 - 1997/6

N2 - In the present study, cyclic voltammograms obtained with an indium-tin oxide (ITO) anode were compared with those obtained with a platinum anode. The peak currents generated by luminol oxidation at the platinum anode showed convex curves facing upwards with increasing luminol concentration, as the result of the prevention of the oxidation of the platinum electrode by the presence of luminol. With the ITO anode, no current due to electrode oxidation or reduction was detected. The peak current intensity of luminol oxidation was proportional to the luminol concentration, but the peak current was also in a linear relationship with the square root of the scan rate. However, the intercept current was largely deviated from zero. The deviation suggests radial diffusion of luminol at the ITO anode which has a small active point density. In conclusion, the ITO anode is useful for accurate measurement of the rate of luminol oxidation, but radial diffusion of luminol in the vicinity of the ITO surface should be taken into consideration in analysis of luminol oxidation.

AB - In the present study, cyclic voltammograms obtained with an indium-tin oxide (ITO) anode were compared with those obtained with a platinum anode. The peak currents generated by luminol oxidation at the platinum anode showed convex curves facing upwards with increasing luminol concentration, as the result of the prevention of the oxidation of the platinum electrode by the presence of luminol. With the ITO anode, no current due to electrode oxidation or reduction was detected. The peak current intensity of luminol oxidation was proportional to the luminol concentration, but the peak current was also in a linear relationship with the square root of the scan rate. However, the intercept current was largely deviated from zero. The deviation suggests radial diffusion of luminol at the ITO anode which has a small active point density. In conclusion, the ITO anode is useful for accurate measurement of the rate of luminol oxidation, but radial diffusion of luminol in the vicinity of the ITO surface should be taken into consideration in analysis of luminol oxidation.

KW - Cyclic Voltammetry

KW - Electrochemiluminescence

KW - Indium-tin Oxide

KW - Luminol

KW - Platinum

KW - Reaction Engineering

UR - http://www.scopus.com/inward/record.url?scp=0031164041&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031164041&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0031164041

VL - 30

SP - 535

EP - 538

JO - Journal of Chemical Engineering of Japan

JF - Journal of Chemical Engineering of Japan

SN - 0021-9592

IS - 3

ER -