Kinetics of dissociative adsorption of ethylene glycol on Pt(1 0 0) electrode surface in sulfuric acid solutions

Fan, Youjun; Zhou, Zhi‐You; Zhang, Chunhua; Chunjie, Fan; Sun, Shi‐Gang

doi:10.1016/j.electacta.2004.05.020

Cited by 23 publications

(20 citation statements)

References 41 publications

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“…The observation of a large variety of incomplete oxidation products (glycolaldehyde, glyoxal, glycolic acid, glyoxylic acid and oxalic acid), which were detected by in situ infrared spectroscopy [1,5,[8][9][10][11][12][13][14][15][16][17] or by chromatographic product analysis [1,12,16,[18][19][20][21] on the one hand and of strongly adsorbed or soluble C 1 species such as CO ad [1,5,[8][9][10][11]13,[15][16][17] formic acid, and formaldehyde [21], respectively, led to the conclusion that EG oxidation can proceed via two different pathways (see Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

Adsorption and electrooxidation of ethylene glycol and its C2 oxidation products on a carbon-supported Pt catalyst: A quantitative DEMS study

Wang

Jusys

Behm

2009

Electrochimica Acta

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Section: Introductionmentioning

confidence: 99%

Adsorption and electrooxidation of ethylene glycol and its C2 oxidation products on a carbon-supported Pt catalyst: A quantitative DEMS study

Wang

Jusys

Behm

2009

Electrochimica Acta

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“…The electrodes cooled in the two atmospheres were denoted thereafter as Pt(hkl)-I and Pt(hkl)-II, respectively. It is well known that cooling the single crystal electrodes in oxidative atmosphere will create surface defects, which will obviously affect the electrochemical properties of the electrodes; while cooling in reductive Ar + H 2 mixture can generate well-defined surfaces [13] . A saturated calomel electrode (SCE) was used as reference electrode.…”

Section: Methodsmentioning

confidence: 99%

Studies of surface processes of electrocatalytic reduction of CO2 on Pt(210), Pt(310) and Pt(510)

et al. 2007

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Surface processes Of CO2 reduction on Pt(210), Pt(310), and Pt(510) electrodes were studied by cyclic voltammetry. Different surface structures of these platinum single crystal electrodes were obtained by various treatment conditions. The experimental results illustrated that the electrocatalytic activity of Pt single crystal electrodes towards CO2 reduction is decreased in an order of Pt(210)> Pt(310)> Pt(510), i.e., with the decrease of (110) step density on well-defined surfaces. When the surfaces were reconstructed due to oxygen adsorption, the catalytic activity of all the three electrodes has been enhanced to a certain extent. Although the activity order remains unchanged, the electrocatalytic activity has been enhanced more significantly as the density of (110) step sites is more intensive on the Pt single crystal surface. It has revealed that the more open the surface structure is, the more active the Pt single crystal electrode will be, and the easier for the electrode to be transformed into a surface structure that exhibits higher activity under external inductions. However, the relatively ordered surfaces of Pt single crystal electrode are comparatively stable under the same external inductions. The present study has gained knowledge on the interaction between CO2 and Pt single crystal electrode surfaces at a microscopic level, and thrown new insight into understanding the surface processes of electrocatalytic reduction Of CO2

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“…Alkaline electrolytes suffer from electrolyte carbonation but benefit from higher current efficiency, more choices for electrode materials and little sensitivity of the anodic reaction to the surface structure [11]. Wide-ranging attempts have been dedicated to the electrooxidation of EG on various substrates such as Pt [1,8,[12][13][14][15], carbon supported Pt [16][17][18], Pd [12], Ni [1], Ag [10], Au [1,10,19], Rh [20], carbon supported Au [9], Pt-Ru [21], Pt-Ru nanoparticles/multi-walled carbon nanotube (MWCNT) [2], Pd-Ru/C and Au-Ru/C [9], polyNiTSPc/Au [11], Pt/MWCNT and Pt-Ru/MWCNT [22], Pt-Ru/C and Pt 3 Sn/C [16], C and Au modified with Pt-Sn catalyst [23], PAni/Pt-Sn [3], Pt doped polyaniline (PAni) [24] and glassy carbon (GC) anode [25]. According to the literature, different pathways and various intermediates have been reported for the EG electrooxidation in acidic and alkaline electrolytes.…”

Section: Introductionmentioning

confidence: 99%

“…Oxidation of alcohols has interested researchers due to the promising application of alcohols as liquid fuels in fuel cells [4][5][6][7]. Both acidic [2,3,8] and alkaline [1,9,10] media have been employed for EG oxidation. The use of each medium has its advantages and drawbacks.…”

Section: Introductionmentioning

confidence: 99%

Electrooxidation of ethylene glycol using gold nanoparticles electrodeposited on pencil graphite in alkaline medium

Etesami

Mohamed

2011

Sci. China Chem.

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The electrooxidation of ethylene glycol (EG) on the surface of gold nanoparticles (AuNPs) in alkaline medium was investigated. AuNPs were electrodeposited on pencil graphite (PG) by fast scan cyclic voltammetry. Different sizes of AuNPs deposited on the surface of PG (AuNPs/PG) were used for the electrooxidation process. AuNPs were electrodeposited on PG at various deposition times in the same potential range but with different scan rates and scan cycles. Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) were used to visualize and characterize the prepared AuNPs/PG electrodes. Cyclic voltammograms were also used to investigate the electrooxidation of EG. The effects of EG and supporting electrolyte concentrations, scan rate, particle size of AuNPs and final potential limit on the electrooxidation process have been investigated. Further studies showed that the electrooxidation of EG is affected by temperature of the medium. The prepared AuNPs showed stability after long-term use.

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Kinetics of dissociative adsorption of ethylene glycol on Pt(1 0 0) electrode surface in sulfuric acid solutions

Cited by 23 publications

References 41 publications

Adsorption and electrooxidation of ethylene glycol and its C2 oxidation products on a carbon-supported Pt catalyst: A quantitative DEMS study

Adsorption and electrooxidation of ethylene glycol and its C2 oxidation products on a carbon-supported Pt catalyst: A quantitative DEMS study

Studies of surface processes of electrocatalytic reduction of CO2 on Pt(210), Pt(310) and Pt(510)

Electrooxidation of ethylene glycol using gold nanoparticles electrodeposited on pencil graphite in alkaline medium

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