Ethanol Oxidation on Pt Single-Crystal Electrodes: Surface-Structure Effects in Alkaline Medium
نویسندگان
چکیده
منابع مشابه
Evidence of local pH changes during ethanol oxidation at Pt electrodes in alkaline media**
Local changes of the interfacial pH can significantly affect the rate and mechanism in the course of an electrodic reaction. For instance, different pH values will have significant effect on the equilibrium properties of both solution and surface species altering the reactions kinetics. Ethanol oxidation at platinum electrodes, in alkaline media involves a fast consumption of OH species that wi...
متن کاملCarbon monoxide oxidation on bare and Pt-modified Ru(101̄0) and Ru(0001) single crystal electrodes
Carbon monoxide oxidation on bare and Pt-modified ruthenium surfaces with the (101̄0) and (0001) orientations was investigated with cyclic voltammetry, scanning-tunneling microscopy and in situ Fourier transform infrared spectroscopy. Facile oxidation kinetics of CO on Ru(101̄0) are observed, in contrast with a slow reaction on Ru(0001). Scanning tunneling microscopy (STM) measurements confirmed ...
متن کاملEthanol electro-oxidation on Pt/C and Pd/C catalysts in alkaline media
Recently, increasingly attentions have been paid to the electro-oxidation of ethanol in alkaline media in the context of using ethanol as a fuel in anion-exchange membrane fuel cell. Alkaline media presents several advantages compared to acidic media. It has been found that the electrocatalytic activity for etanol oxidation in alkaline media is much higher than that in acidic media [1]. Further...
متن کاملMechanism of CO oxidation on Pt(111) in alkaline media.
Electrochemical techniques, coupled with in situ scanning tunneling microscopy, have been used to examine the mechanism of CO oxidation and the role of surface structure in promoting CO oxidation on well-ordered and disordered Pt(111) in aqueous NaOH solutions. Oxidation of CO occurs in two distinct potential regions: the prepeak (0.25-0.70 V) and the main peak (0.70 V and higher). The mechanis...
متن کاملthe effects of changing roughness on the flow structure in the bends
flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: ChemPhysChem
سال: 2014
ISSN: 1439-4235
DOI: 10.1002/cphc.201402044