Abstract
The addition of methyl viologen (MV2+) accelerates the reduction of Na2SeO3 not only in 0.1 moldm-3 sodium phosphate buffer (PBS, pH 7) but also in 0.22 moldm-3 sodium acetate buffer (pH 4). Water-insoluble red Se is dispersed in the vicinity of the electrode surface as the reduced product. Michaelis-Menten-type relationship is obtained between the reduction current and the concentration of Na 2SeO3, suggesting that MV2+ molecules mediate the electron transfer from the electrode to HSeO3- or SeO3 2- dissolved in PBS. MV2+ is also effective in accelerating the reduction of SeO4 2-, which has already been reported to be electrochemically inactive.
| Original language | English |
|---|---|
| Pages (from-to) | 350-352 |
| Number of pages | 3 |
| Journal | Electrochemistry |
| Volume | 81 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2013 May |
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Keywords
- Electrochemical reduction
- Mediation reaction
- Methyl viologen
- Water-soluble selenium compounds
ASJC Scopus subject areas
- Electrochemistry
Cite this
Acceleration of electroreduction reaction of water-soluble selenium compounds in the presence of methyl viologen. / Koshikumo, Fumiya; Murata, Wakana; Ooya, Akiyuki; Imabayashi, Shinichiro.
In: Electrochemistry, Vol. 81, No. 5, 05.2013, p. 350-352.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Acceleration of electroreduction reaction of water-soluble selenium compounds in the presence of methyl viologen
AU - Koshikumo, Fumiya
AU - Murata, Wakana
AU - Ooya, Akiyuki
AU - Imabayashi, Shinichiro
PY - 2013/5
Y1 - 2013/5
N2 - The addition of methyl viologen (MV2+) accelerates the reduction of Na2SeO3 not only in 0.1 moldm-3 sodium phosphate buffer (PBS, pH 7) but also in 0.22 moldm-3 sodium acetate buffer (pH 4). Water-insoluble red Se is dispersed in the vicinity of the electrode surface as the reduced product. Michaelis-Menten-type relationship is obtained between the reduction current and the concentration of Na 2SeO3, suggesting that MV2+ molecules mediate the electron transfer from the electrode to HSeO3- or SeO3 2- dissolved in PBS. MV2+ is also effective in accelerating the reduction of SeO4 2-, which has already been reported to be electrochemically inactive.
AB - The addition of methyl viologen (MV2+) accelerates the reduction of Na2SeO3 not only in 0.1 moldm-3 sodium phosphate buffer (PBS, pH 7) but also in 0.22 moldm-3 sodium acetate buffer (pH 4). Water-insoluble red Se is dispersed in the vicinity of the electrode surface as the reduced product. Michaelis-Menten-type relationship is obtained between the reduction current and the concentration of Na 2SeO3, suggesting that MV2+ molecules mediate the electron transfer from the electrode to HSeO3- or SeO3 2- dissolved in PBS. MV2+ is also effective in accelerating the reduction of SeO4 2-, which has already been reported to be electrochemically inactive.
KW - Electrochemical reduction
KW - Mediation reaction
KW - Methyl viologen
KW - Water-soluble selenium compounds
UR - http://www.scopus.com/inward/record.url?scp=84878966832&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84878966832&partnerID=8YFLogxK
U2 - 10.5796/electrochemistry.81.350
DO - 10.5796/electrochemistry.81.350
M3 - Article
VL - 81
SP - 350
EP - 352
JO - Electrochemistry
JF - Electrochemistry
SN - 1344-3542
IS - 5
ER -