Temperature dependence of proton electroreduction kinetics at gold(111) and (210) surfaces and annealing of surface defects

Hamelin, A.; Stoicoviciu, L.; Chang, Si‐Chung; Weaver, Michael J.

doi:10.1016/0022-0728(91)85547-3

Cited by 29 publications

(30 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…HER on gold electrode has been the object of many studies [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. The HER kinetics depends on the electrode pre-treatment but, except some extreme cases, the data of most of these papers are rather similar.…”

Section: Introductionmentioning

confidence: 92%

See 1 more Smart Citation

Kinetics of the hydrogen evolution reaction on gold electrode. A new case of the barrierless discharge

Khanova¹,

Krishtalik²

2011

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 92%

“…The HER kinetics depends on the electrode pre-treatment but, except some extreme cases, the data of most of these papers are rather similar. In acid solutions, the reaction rate at the constant potential was found to be the first order relative hydrogen ion concentration what is typical of the slow discharge mechanism [13,15].…”

Section: Introductionmentioning

confidence: 96%

Kinetics of the hydrogen evolution reaction on gold electrode. A new case of the barrierless discharge

Khanova¹,

Krishtalik²

2011

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

“…Details on investigations on other lowindex Au single-crystal surfaces can be obtained elsewhere. [59][60][61][62][63][64][65][66] The investigations on Au single crystals towards HER are rare [25,27,28,67] and show a weak dependence on crystallographic orientation in early studies. Perez et al [25] investigated the hydrogen evolution in different Au(hkl) single crystal electrodes.…”

Section: à2mentioning

confidence: 98%

Enhanced Reactivity for Hydrogen Reactions at Pt Nanoislands on Au(111)

2010

View full text Add to dashboard Cite

We report high exchange current densities exceeding 1 A cm(-2) at Pt nanostructures on Au(111) for hydrogen-related reactions. Such activity is found at Pt nanoparticles with a coverage of less than 10 % of a monolayer on Au(111) and on single Pt particles deposited on Au(111). Potential pulse technique as well as micropolarization curves with overpotentials of +/-10 mV were used in the case of extended nanostructured surfaces to determine the activity. Single Pt particles were investigated in an in situ electrochemical scanning tunneling microscope setup using the STM tip as local sensor. The reactivity obtained on Pt nanostructured Au(111) towards hydrogen reactions were subsidized by single particle reactivity measurements. The specific activity of platinum is enhanced by more than a factor of 1000 as compared to a Pt(111) single crystal. Aspects that may explain this enhancement such as an involvement of the substrate, highly reactive defect sites and enhanced mass transport are discussed.

show abstract

“…Defects as well as small terraces will inhibit the well-pronounced peaks at 0.34 V and 0.78 V versus SCE for the abovementioned procedures. Details on investigations on other low-index Au single-crystal surfaces can be obtained elsewhere [54,[58][59][60][61][62][63][64] Investigations of Au single crystals with respect to HER are quite rare [65][66][67] and show a weak dependence on crystallographic orientation in early studies. Comparable to Pt, precise investigations can be done only with high-quality single crystals and high standards for clean experimental conditions.…”

Section: Au(hkl ) Surfacesmentioning

confidence: 99%