Formic acid oxidation on pure and Bi-modified Pt(111): Temperature effects
Abstract
Temperature effects on the kinetics of formic acid electrooxidation are studied on Pt(111) and on Pt(111) modified by irreversibly adsorbed Bi under both potentiodynamic and potentiostatic conditions. We propose two modes of action of irreversibly adsorbed Pi on the kinetics of HCOOH oxidation: (i) the inhibiting effect due to a blocking of active Pt sites and (ii) the catalytic effect due to the enhanced adsorption of OHad on the Pt sites adjacent to Bi. This counteracting behavior led to the fact that under steady-state conditions no difference in the overall activity was observed between Pt(111) and Pt(111)/Bi. Therefore, Pt(111)/Bi does not represent a catalytically active system of technological relevance.
Source:
Langmuir, 2000, 16, 21, 8159-8166Publisher:
- Amer Chemical Soc, Washington
DOI: 10.1021/la000339z
ISSN: 0743-7463
WoS: 000089799900041
Scopus: 2-s2.0-0034300051
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Schmidt, TJ AU - Behm, RJ AU - Grgur, Branimir AU - Marković, NM AU - Ross, PN PY - 2000 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/304 AB - Temperature effects on the kinetics of formic acid electrooxidation are studied on Pt(111) and on Pt(111) modified by irreversibly adsorbed Bi under both potentiodynamic and potentiostatic conditions. We propose two modes of action of irreversibly adsorbed Pi on the kinetics of HCOOH oxidation: (i) the inhibiting effect due to a blocking of active Pt sites and (ii) the catalytic effect due to the enhanced adsorption of OHad on the Pt sites adjacent to Bi. This counteracting behavior led to the fact that under steady-state conditions no difference in the overall activity was observed between Pt(111) and Pt(111)/Bi. Therefore, Pt(111)/Bi does not represent a catalytically active system of technological relevance. PB - Amer Chemical Soc, Washington T2 - Langmuir T1 - Formic acid oxidation on pure and Bi-modified Pt(111): Temperature effects EP - 8166 IS - 21 SP - 8159 VL - 16 DO - 10.1021/la000339z ER -
@article{ author = "Schmidt, TJ and Behm, RJ and Grgur, Branimir and Marković, NM and Ross, PN", year = "2000", abstract = "Temperature effects on the kinetics of formic acid electrooxidation are studied on Pt(111) and on Pt(111) modified by irreversibly adsorbed Bi under both potentiodynamic and potentiostatic conditions. We propose two modes of action of irreversibly adsorbed Pi on the kinetics of HCOOH oxidation: (i) the inhibiting effect due to a blocking of active Pt sites and (ii) the catalytic effect due to the enhanced adsorption of OHad on the Pt sites adjacent to Bi. This counteracting behavior led to the fact that under steady-state conditions no difference in the overall activity was observed between Pt(111) and Pt(111)/Bi. Therefore, Pt(111)/Bi does not represent a catalytically active system of technological relevance.", publisher = "Amer Chemical Soc, Washington", journal = "Langmuir", title = "Formic acid oxidation on pure and Bi-modified Pt(111): Temperature effects", pages = "8166-8159", number = "21", volume = "16", doi = "10.1021/la000339z" }
Schmidt, T., Behm, R., Grgur, B., Marković, N.,& Ross, P.. (2000). Formic acid oxidation on pure and Bi-modified Pt(111): Temperature effects. in Langmuir Amer Chemical Soc, Washington., 16(21), 8159-8166. https://doi.org/10.1021/la000339z
Schmidt T, Behm R, Grgur B, Marković N, Ross P. Formic acid oxidation on pure and Bi-modified Pt(111): Temperature effects. in Langmuir. 2000;16(21):8159-8166. doi:10.1021/la000339z .
Schmidt, TJ, Behm, RJ, Grgur, Branimir, Marković, NM, Ross, PN, "Formic acid oxidation on pure and Bi-modified Pt(111): Temperature effects" in Langmuir, 16, no. 21 (2000):8159-8166, https://doi.org/10.1021/la000339z . .