A STM Investigation of Pt‐Single Crystal Surfaces in Air and Electrolyte Solutions

Vogel, R.; Kamphausen, I.; Baltruschat, Helmut

doi:10.1002/bbpc.19920960402

Cited by 41 publications

(36 citation statements)

References 27 publications

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“…Bittner et al showed by electrochemical scanning tunneling microscopy (EC-STM) that for a Pt(110) cooled in iodine, at very negative potentials (in H 2 SO 4 solution), the iodine desorbs and gives rise to an unreconstructed (1×1) surface with a surface topography consisting of small rectangular and isotropic terraces [19]. However, as will be shown below, our results suggest the coexistence of both superficial structures Pt(110)−(1×2) and Pt(110)−(1×1), in better agreement with an older work from Vogel et al [20].…”

Section: Introductionsupporting

confidence: 92%

Effect of the Surface Structure of Pt(100) and Pt(110) on the Oxidation of Carbon Monoxide in Alkaline Solution: an FTIR and Electrochemical Study

et al. 2011

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The electrochemical oxidation and infrared spectral features for carbon monoxide adsorbed on Pt(100) and Pt(110) in 0.1 M NaOH were studied as a function of the annealing/ cooling treatment with the objective to establish the influence of the platinum surface site geometry and the role of surface order in the electro-oxidation of CO on these two surfaces. Two common cooling methods (Ar and H 2 /Ar atmospheres) were employed for both surface electrodes. Additionally, CO cooling and I 2 vapour cooling methods were used for Pt(100) and Pt(110), respectively. Multiple CO vibration bands were observed on both electrode surfaces, their distribution and potential dependence strongly depending on the surface treatment.

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Section: Introductionsupporting

confidence: 92%

Effect of the Surface Structure of Pt(100) and Pt(110) on the Oxidation of Carbon Monoxide in Alkaline Solution: an FTIR and Electrochemical Study

et al. 2011

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“…It is the so-called ͑3 ϫ 3͒-asym structure. [24][25][26][27][28][29][30][31][32][33][34][35][36][37]41,42 We believe that our model based on geometrical principles can also explain the appearance of this particular structure. Note that the arrangement of ͑3 ϫ 3͒-asym iodine adlayer on Pt(111) has been described in many papers, so far.…”

Section: Example Studymentioning

confidence: 99%

“…In case of ͑3 ϫ 3͒-asym, each threefold iodine atoms is surrounded by six neighboring adatoms positioned at a higher level. [24][25][26][27][28][29][30][31][32][33][34][35][36][37] In order to understand the conditions for appearance and differences between ͑3 ϫ 3͒-sym and ͑3 ϫ 3͒-asym structures we employ our model, looking for a full range of possible FIG. 4.…”

Section: Example Studymentioning

confidence: 99%

Unequal-sphere packing model for the structural arrangement of the well-ordered adsorbate-substrate system

Tkatchenko¹,

Batina²

2004

Phys. Rev. B

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In order to understand the well-ordered adsorbate-substrate systems at atomic level, a method is developed based on the simulation of packing arrangements for layers of unequal spheres, in three-dimensional space. The model, based on geometrical principles, is developed for fcc structure consisting of two hexagonal ordered layers. During simulation, adsorbate spheres were accommodated in different positions, forming a great variety of structures, in dependence of the intersphere distance of the upper layer spheres. Using the average height of the adsorbate layer on the flat substrate as a determinant parameter, several specific structures have been selected as the most probable: ͑ͱ3 ϫ ͱ 3͒R30°, ͑ͱ7 ϫ ͱ 7͒R19.1°, and ͑3 ϫ 3͒. Indeed, they correspond to typical accommodations of the iodine adatoms on the Pt(111) surface, earlier found in experimental studies, which clearly supports the validity of our model. The model developed in our study could completely and satisfactorily describe the accommodation process of the iodine adlayer on the Pt (111) surface. This methodology could be of great help for interpretation of scanning tunneling microscopy images, better understanding of adlayer structures, and design of adsorbate-substrate systems with exciting properties.

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“…2 Adlayer structures of halides on Au(hkl) and Ag(hkl), adapted from Ref. [ [275][276][277], Pd [278], Rh [279], and Ni [280]. A comprehensive review is given in Ref.…”

Section: Introductionmentioning

confidence: 99%

“…For halide adlayers on coinage metal surfaces such as Au (111), Ag (111), and Cu (111) often incommensurate structures with lattice spacings, which decrease with increasing potential were found (electrocompression) [51,254,255,259]. On the (111) surfaces of transition metals well-ordered adlayers exhibit preferentially commensurate structures indicating a stronger preference for energetically favorable adsorption sites [273][274][275][276][277]. Halide adlayers on fcc (100) surfaces exhibit a strong trend towards commensurate structures, with a predominant occurrence of simple c(2 × 2) adlattices.…”

Section: Introductionmentioning

confidence: 99%

Phase Transitions in Two‐dimensional Adlayers at Electrode Surfaces: Thermodynamics, Kinetics, and Structural Aspects

Wandlowski¹

2002

Encyclopedia of Electrochemistry

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The sections in this article are Introduction Thermodynamic Aspects Phase Transitions and Order Parameter Adsorption Isotherms and Lateral Interactions Kinetics of 2 D Phase Formation and Dissolution Diffusion, Adsorption, Autocatalysis Nucleation and Growth Mechanisms Nucleation Growth Coupling of Nucleation and Growth Dissolution of 2 D Condensed Monolayers Examples Phase Transitions in Anionic Adlayers Introduction Phase Formation in Halide Adlayers Phase Transitions in Adlayers of Oxoanions Phase Transitions in UPD —Adlayers Introduction Underpotential Deposition of Copper Ions on Au ( hkl ) Underpotential Deposition of Copper Ions on Pt ( hkl ) Underpotential Deposition of Lead on Ag ( hkl ) Phase Transitions in Organic Monolayers General Aspects Thermodynamic Aspects Kinetic Aspects Case Study I—Coumarin at the Mercury–Aqueous Electrolyte Interface Case Study III —2,2 ′ ‐Bipyridine (2,2 ′ ‐ BP ) on Au ( hkl ) Conclusion and Outlook Acknowledgment

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A STM Investigation of Pt‐Single Crystal Surfaces in Air and Electrolyte Solutions

Cited by 41 publications

References 27 publications

Effect of the Surface Structure of Pt(100) and Pt(110) on the Oxidation of Carbon Monoxide in Alkaline Solution: an FTIR and Electrochemical Study

Effect of the Surface Structure of Pt(100) and Pt(110) on the Oxidation of Carbon Monoxide in Alkaline Solution: an FTIR and Electrochemical Study

Unequal-sphere packing model for the structural arrangement of the well-ordered adsorbate-substrate system

Phase Transitions in Two‐dimensional Adlayers at Electrode Surfaces: Thermodynamics, Kinetics, and Structural Aspects

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