Oxygen reduction reaction on spontaneously and potentiodynamically formed Au/TiO2 composite surfaces
Abstract
From aqueous solutions, gold was deposited on freshly polished titanium surface either by displacement reaction or by potentiodynamic polarization. Both of these procedures resulted in the formation of Au/TiO2 composite layer over the titanium surface, although with quite different Au content. The electrochemical behaviour of these composite layers was examined in 0.1 M NaOH solution, both oxygen free and oxygen saturated, using rotating disc technique. In the potential region of oxygen reduction reaction, the Au/TiO2 layer obtained by potentiodynamic polarization, displayed the voltammetric curve similar to that observed on (1 0 0) plane of Au monocrystal. The Koutecky-Levich analysis evidenced that 4e- route of oxygen reduction dominates on both type of composite layers.
Keywords:
Electrocatalysis / Oxygen reduction reaction / Gold / Rotating disk electrode / Titanium dioxideSource:
Electrochimica Acta, 2007, 52, 13, 4581-4588Publisher:
- Elsevier
Funding / projects:
- Struktura, termodinamičke i elektrohemijske osobine materijala za konverziju energije i nove tehnologije (RS-MESTD-MPN2006-2010-142047)
DOI: 10.1016/j.electacta.2006.12.071
ISSN: 0013-4686
WoS: 000245476100037
Scopus: 2-s2.0-33847608280
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Institution/Community
IHTMTY - JOUR AU - Jašin, Danijela M. AU - Abu Rabi, Anđela AU - Mentus, Slavko AU - Jovanović, Dušan M. PY - 2007 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4253 AB - From aqueous solutions, gold was deposited on freshly polished titanium surface either by displacement reaction or by potentiodynamic polarization. Both of these procedures resulted in the formation of Au/TiO2 composite layer over the titanium surface, although with quite different Au content. The electrochemical behaviour of these composite layers was examined in 0.1 M NaOH solution, both oxygen free and oxygen saturated, using rotating disc technique. In the potential region of oxygen reduction reaction, the Au/TiO2 layer obtained by potentiodynamic polarization, displayed the voltammetric curve similar to that observed on (1 0 0) plane of Au monocrystal. The Koutecky-Levich analysis evidenced that 4e- route of oxygen reduction dominates on both type of composite layers. PB - Elsevier T2 - Electrochimica Acta T1 - Oxygen reduction reaction on spontaneously and potentiodynamically formed Au/TiO2 composite surfaces VL - 52 IS - 13 SP - 4581 EP - 4588 DO - 10.1016/j.electacta.2006.12.071 ER -
@article{ author = "Jašin, Danijela M. and Abu Rabi, Anđela and Mentus, Slavko and Jovanović, Dušan M.", year = "2007", abstract = "From aqueous solutions, gold was deposited on freshly polished titanium surface either by displacement reaction or by potentiodynamic polarization. Both of these procedures resulted in the formation of Au/TiO2 composite layer over the titanium surface, although with quite different Au content. The electrochemical behaviour of these composite layers was examined in 0.1 M NaOH solution, both oxygen free and oxygen saturated, using rotating disc technique. In the potential region of oxygen reduction reaction, the Au/TiO2 layer obtained by potentiodynamic polarization, displayed the voltammetric curve similar to that observed on (1 0 0) plane of Au monocrystal. The Koutecky-Levich analysis evidenced that 4e- route of oxygen reduction dominates on both type of composite layers.", publisher = "Elsevier", journal = "Electrochimica Acta", title = "Oxygen reduction reaction on spontaneously and potentiodynamically formed Au/TiO2 composite surfaces", volume = "52", number = "13", pages = "4581-4588", doi = "10.1016/j.electacta.2006.12.071" }
Jašin, D. M., Abu Rabi, A., Mentus, S.,& Jovanović, D. M.. (2007). Oxygen reduction reaction on spontaneously and potentiodynamically formed Au/TiO2 composite surfaces. in Electrochimica Acta Elsevier., 52(13), 4581-4588. https://doi.org/10.1016/j.electacta.2006.12.071
Jašin DM, Abu Rabi A, Mentus S, Jovanović DM. Oxygen reduction reaction on spontaneously and potentiodynamically formed Au/TiO2 composite surfaces. in Electrochimica Acta. 2007;52(13):4581-4588. doi:10.1016/j.electacta.2006.12.071 .
Jašin, Danijela M., Abu Rabi, Anđela, Mentus, Slavko, Jovanović, Dušan M., "Oxygen reduction reaction on spontaneously and potentiodynamically formed Au/TiO2 composite surfaces" in Electrochimica Acta, 52, no. 13 (2007):4581-4588, https://doi.org/10.1016/j.electacta.2006.12.071 . .