TY - GEN
T1 - On the catalytic role of MWCNTs for the electroreduction of NO gas in an acid solution
AU - Lin, Chia-Yu
AU - Ho, Kuo Chuan
PY - 2009/11/27
Y1 - 2009/11/27
N2 - The poly(3,4-ethylenedioxythiophene)/multi-wall carbon nanotubes (PEDOT/MWCNTs) modified screenprinted carbon electrodes (SPCEs) were fabricated and their catalytic properties towards nitric oxide (NO) gas, evolved via the disproportion reaction of nitrite in an acid solution, were studied. The thicker the PEDOT film was, the higher the peak current density (Jpc) was observed. However, further increase in the thickness of PEDOT (> 2 layers) would decrease the Jpc. Moreover, as the loading of the MWCNTs was increased, the peak potential for NO reduction shifted to more positive direction due to the promoted electron transfer by adding MWCNTs. Besides, due to the larger amount of the protonated nitrite ions in the acid solution, the sensitivity of the PEDOT/MWCNTs-modified SPCEs was enhanced at lower solution pH.
AB - The poly(3,4-ethylenedioxythiophene)/multi-wall carbon nanotubes (PEDOT/MWCNTs) modified screenprinted carbon electrodes (SPCEs) were fabricated and their catalytic properties towards nitric oxide (NO) gas, evolved via the disproportion reaction of nitrite in an acid solution, were studied. The thicker the PEDOT film was, the higher the peak current density (Jpc) was observed. However, further increase in the thickness of PEDOT (> 2 layers) would decrease the Jpc. Moreover, as the loading of the MWCNTs was increased, the peak potential for NO reduction shifted to more positive direction due to the promoted electron transfer by adding MWCNTs. Besides, due to the larger amount of the protonated nitrite ions in the acid solution, the sensitivity of the PEDOT/MWCNTs-modified SPCEs was enhanced at lower solution pH.
UR - http://www.scopus.com/inward/record.url?scp=70450131406&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70450131406&partnerID=8YFLogxK
U2 - 10.1063/1.3156527
DO - 10.1063/1.3156527
M3 - Conference contribution
AN - SCOPUS:70450131406
SN - 9780735406742
T3 - AIP Conference Proceedings
SP - 288
EP - 289
BT - Olfaction and Electronic Nose - Proceedings of the 13th International Symposium on Olfaction and Electronic Nose, ISOEN
T2 - 13th International Symposium on Olfaction and Electronic Nose, ISOEN
Y2 - 15 April 2009 through 17 April 2009
ER -