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 |
| 巻 | 30 |
| 発行部数 | 3 |
| 出版物ステータス | Published - 1997 6 |
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ASJC Scopus subject areas
- Chemical Engineering(all)
- Chemistry(all)
これを引用
Analysis of reaction of luminol at an indium-tin oxide anode by cyclic voltammetry. / Yoshimi, Yasuo; Sakai, Kiyotaka.
：: Journal of Chemical Engineering of Japan, 巻 30, 番号 3, 06.1997, p. 535-538.研究成果: Article
}
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 -