On the nature of the and surface bonding

Patrito, E.M.; Olivera, P.Paredes; Sellers, Harrell

doi:10.1016/s0039-6028(96)01575-0

Cited by 46 publications

(34 citation statements)

References 49 publications

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“…0.2. The latter postulate was in agreement with chronocoulometric and radiotracer measurements (11) as well as theoretical predictions (12). The adlayer structures observed on Rh(111) (6) and Pt(111) (4,5) were found to be 1 To whom correspondence should be addressed.…”

Section: Introductionsupporting

confidence: 86%

Atom-Resolved EC-STM Studies of Anion Adsorption at Well-Defined Surfaces: Pd(111) in Sulfuric Acid Solution

Kim

Soriaga

Vigh

et al. 2000

Journal of Colloid and Interface Science

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Section: Introductionsupporting

confidence: 86%

Atom-Resolved EC-STM Studies of Anion Adsorption at Well-Defined Surfaces: Pd(111) in Sulfuric Acid Solution

Kim

Soriaga

Vigh

et al. 2000

Journal of Colloid and Interface Science

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“…Infrared data revealed a C 3ν symmetry, in which three oxygen atoms of the sulfate species interact with the substrate reflecting the symmetry match of the tetragonal anion with the trigonal gold surface [313,314]. This assignment is in agreement with recent calculations [318]. The same ordered sulfate structure was found during in situ STM studies on (111) surfaces of Pt [300,301], Rh [302], Cu [303][304][305][306], Ir [307], and Pd [308].…”

Section: Phase Transitions In Adlayers Of Oxoanionssupporting

confidence: 87%

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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“…On the other hand, the response of the metal is a charge transfer toward the sulfate LUMO leading to an increase of charge density around the sulfur atom. The gold-sulfate bonding has both r* and p* character [54]. Finally, the decrease of electron density around oxygen atoms and the increase around the sulfur atom can be rationalized by r donation from oxygen atoms toward metal and r* and p* back donation from the metal toward the sulfur atom.…”

Section: Electronic Structure Of Metal/adsorbates Nanoparticlesmentioning

confidence: 90%

“…Concerning the geometry of the chemisorption of sulfate molecule onto gold surface, calculations revealed that an oxygen atom of a sulfate molecule is surrounded by three surface gold atoms on face (1 1 1) [54]. The LUMOs are mainly formed by sulfur orbitals and the first LUMOs are r* and p* molecular orbitals [54].…”

Section: Electronic Structure Of Metal/adsorbates Nanoparticlesmentioning

confidence: 99%

Size dependence investigations of hot electron cooling dynamics in metal/adsorbates nanoparticles

Bauer¹,

Abid²,

Girault³

2005

Chemical Physics

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The size dependence of electron-phonon coupling rate has been investigated by femtosecond transient absorption spectroscopy for gold nanoparticles (NPs) wrapped in a shell of sulfate with diameter varying from 1.7 to 9.2 nm. Broad-band spectroscopy gives an overview of the complex dynamics of nonequilibrium electrons and permits the choice of an appropriate probe wavelength for studying the electron-phonon coupling dynamics. Ultrafast experiments were performed in the weak perturbation regime (less than one photon in average per nanoparticle), which allows the direct extraction of the hot electron cooling rates in order to compare different NPs sizes under the same conditions. Spectroscopic data reveals a decrease of hot electron energy loss rates with metal/ adsorbates nanosystem sizes. Electron-phonon coupling time constants obtained for 9.2 nm NPs are similar to gold bulk materials ($1 ps) whereas an increase of hot electron cooling time up to 1.9 ps is observed for sizes of 1.7 nm. This is rationalized by the domination of surface effects over size (bulk) effects. The slow hot electron cooling is attributed to the adsorbates-induced long-lived nonthermal regime, which significantly reduces the electron-phonon coupling strength (average rate of phonon emission).

show abstract

On the nature of the and surface bonding

Cited by 46 publications

References 49 publications

Atom-Resolved EC-STM Studies of Anion Adsorption at Well-Defined Surfaces: Pd(111) in Sulfuric Acid Solution

Atom-Resolved EC-STM Studies of Anion Adsorption at Well-Defined Surfaces: Pd(111) in Sulfuric Acid Solution

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

Size dependence investigations of hot electron cooling dynamics in metal/adsorbates nanoparticles

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