Electrocatalysis of Ethanol on a Pd Electrode in Alkaline Media: An in Situ Attenuated Total Reflection Surface-Enhanced Infrared Absorption Spectroscopy Study

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	Electrocatalysis of Ethanol on a Pd Electrode in Alkaline Media: An in Situ Attenuated Total Reflection Surface-Enhanced Infrared Absorption Spectroscopy Study
	Yang, Yao-Yue ; Ren, Jie ; Li, Qiao-Xia ; Zhou, Zhi-You ; Sun, Shi-Gang ; Cai, Wen-Bin ; Zhou ZY(周志有) ; Sun SG(孙世刚)
刊名	http://dx.doi.org/10.1021/cs401198t
	2014
关键词	NOBLE-METAL ELECTRODES DENSITY-FUNCTIONAL THEORY ALCOHOL FUEL-CELLS FORMIC-ACID PLATINUM-ELECTRODES OXIDATION REACTION ELECTROOXIDATION REACTION DYNAMIC PROCESSES ATR-SEIRAS PALLADIUM
英文摘要	NSFC [21073045, 21273046, 21073152, 21103107]; SMCST [11JC140200, 08DZ2270500]; In situ attenuated total reflection surface-enhanced infrared absorption spectroscopy in conjunction with H-D isotope replacement is used to investigate the dissociation and oxidation of CH3CH2OH on a Pd electrode in 0.1 M NaOH, with a focus on identifying the chemical nature of the pivotal intermediate in the so-called dual-pathway (C1 and C2) reaction mechanism. Real-time spectroelectrochemical measurements reveal a band at similar to 1625 cm(-1) showing up prior to the multiply bonded COad band. CH3CD2OH and D2O are used to exclude the spectral interference with this band from interfacial acetaldehyde and H2O, respectively, confirming for the first time that the similar to 1625 cm(-1) band is due to the adsorbed acetyl on the Pd electrode in alkaline media. The spectral results suggest that the as-adsorbed acetyl (CH3COad) is oxidized to acetate from approximately -0.4 V as the potential moves positively to conclude the C2 pathway. Alternatively, in the Cl pathway, the CH(3)COad is decomposed to alpha-COad and beta-CHx species on the Pd electrode at potentials more negative than approximately -0.1 V; the alpha-COad species is oxidized to CO2 at potentials more positive than approximately -0.3 V, while the beta-CHx species may be first converted to COad at approximately -0.1 V and further oxidized to CO2 at more positive potentials.
语种	英语
出版者	AMER CHEMICAL SOC
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/89370]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Yang, Yao-Yue,Ren, Jie,Li, Qiao-Xia,et al. Electrocatalysis of Ethanol on a Pd Electrode in Alkaline Media: An in Situ Attenuated Total Reflection Surface-Enhanced Infrared Absorption Spectroscopy Study[J]. http://dx.doi.org/10.1021/cs401198t,2014.
APA	Yang, Yao-Yue.,Ren, Jie.,Li, Qiao-Xia.,Zhou, Zhi-You.,Sun, Shi-Gang.,...&孙世刚.(2014).Electrocatalysis of Ethanol on a Pd Electrode in Alkaline Media: An in Situ Attenuated Total Reflection Surface-Enhanced Infrared Absorption Spectroscopy Study.http://dx.doi.org/10.1021/cs401198t.
MLA	Yang, Yao-Yue,et al."Electrocatalysis of Ethanol on a Pd Electrode in Alkaline Media: An in Situ Attenuated Total Reflection Surface-Enhanced Infrared Absorption Spectroscopy Study".http://dx.doi.org/10.1021/cs401198t (2014).