Platinum ethylene electrooxidation

F. Ficicioglu and F. Kadirgan, Electrooxidation of ethylene glycol on a platinum doped polyaniline electrode, J. Electroanal. Chem., 451, 95 99 (1998). 

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This paper focuses on the effects of the carbon and ethylidyne-derived adlayers in electrooxidation. We present brief accounts of how the adlayers were characterized, both electrochemically and in vacuum, and will describe adlayer characterization in more detail in a separate publication [19]. To our knowledge, the effects of carbon adlayers on single crystal electrodes have not been studied, although the situation is somewhat analogous to platinum particles deposited on graphite electrodes, about which quite a bit is known [20,21]. The e ylidyne adlayer is derived from adsorption of ethylene in vacuum [22,23]. Electrochemical adsorption of ethylene and electroreduction to ethane have also been previously studied [24-28]. 

Our primary research indicated that tin oxide could be the active component for ethanol electrooxidation [60,68-70]. Here our focus is to study the effects of the chemical state of tin and the component of PtSn/C catalysts on the performance of DEFCs. For comparison, two PtSn/C catalysts with tin oxide and PtSn alloy were prepared, respectively. For the former, tin oxide with a diameter of 1 nm was prepared first in ethylene glycol, and then platinum was reduced on the surface or near the tin oxide (denoted as PtSn-1). For the latter, first the precursor of Pt and Sn were mixed together, and then they were reduced in FG (denoted as PtSn-2). 

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