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Barraza Alvarez I, Le T, Hosseini H, Samira S, Beck A, Marlowe J, Montemore MM, Wang B, Christopher P. Bond Selective Photochemistry at Metal Nanoparticle Surfaces: CO Desorption from Pt and Pd. J Am Chem Soc 2024; 146:12431-12443. [PMID: 38661654 DOI: 10.1021/jacs.3c13874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
The use of visible photon fluxes to influence catalytic reactions on metal nanoparticle surfaces has attracted attention based on observations of reaction mechanisms and selectivity not observed under equilibrium heating. These observations suggest that photon fluxes can selectively impact the rates of certain elementary steps, creating nonequilibrium energy distributions among various reaction pathways. However, quantitative studies validating these hypotheses on metal nanoparticle surfaces are lacking. We examine the influence of continuous wave visible photon fluxes on the CO desorption rates from 1 to 2 nm diameter Pt and Pd nanoparticle surfaces supported on γ-Al2O3. Temperature-programmed desorption measurements quantified via diffuse reflectance infrared Fourier transform spectroscopy demonstrate that visible photon fluxes significantly enhanced the rate of CO desorption from Pt nanoparticles in a wavelength-dependent manner. 440 nm photons most efficiently promoted CO desorption from Pt nanoparticle surfaces, aligning with the excitation energy for the interfacial electronic transition within the Pt-CO bond. Conversely, visible photon fluxes had no measurable influence on CO desorption rates from Pd nanoparticle surfaces after accounting for photon-induced heating. Density functional theory calculations demonstrate that the Pt-CO bond exhibits a narrower LUMO resonance, stronger coupling between the photoexcitation and forces induced on the metal-C bond, and vibrational energy dissipation that more effectively couples to desorption as compared to Pd-CO. These results demonstrate the specificity photons provide in facilitating chemical reactions on metal nanoparticle surfaces and substantiate the idea that photon fluxes can steer processes and outcomes of catalytic reactions in ways not achievable by equilibrium heating.
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Affiliation(s)
- Isabel Barraza Alvarez
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Tien Le
- School of Sustainable Chemical, Biological and Materials Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Hajar Hosseini
- Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana 70115, United States
| | - Samji Samira
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Arik Beck
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Justin Marlowe
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California 93106, United States
| | - Matthew M Montemore
- Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana 70115, United States
| | - Bin Wang
- School of Sustainable Chemical, Biological and Materials Engineering, University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Phillip Christopher
- Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, California 93106, United States
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Muzas A, Serrano Jiménez A, Ovčar J, Lončarić I, Alducin M, Juaristi JI. Absence of isotope effects in the photo-induced desorption of CO from saturated Pd(111) at high laser fluence. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2022.111518] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Catalytic Oadsorbed + Oadsorbed = O2,gas desorption from c(2X2)-O and p(5X5)-O phases on single crystal Pd(1 0 0) surface: Observing the unseen using femtosecond laser spectroscopy. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.139117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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4
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Banerjee S, Bera A, Chakraborty A, Ghosh J, Varghese SM, Bhattacharya A. Ultrafast dynamics of recombinative desorption of molecular oxygen from the single crystal Pd(1 1 0) surface. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Tek G, Hamm P. Transient CO desorption from thin Pt films induced by mid-IR pumping. J Chem Phys 2021; 154:084706. [PMID: 33639777 DOI: 10.1063/5.0041216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Resonant and off-resonant mid-infrared pump-probe spectroscopy is used to measure the vibrational dynamics of CO adsorbed to thin (0.2 nm, 2 nm, and 10 nm) heterogeneous Pt layers in an aqueous solution. The transient signals observed with resonant pumping are dominated by vibrational relaxation of the CO internal stretch vibration with a lifetime of T1 ∼ 3 ps in all cases. Off-resonant pumping suppresses that contribution to the signal and singles out a signal, which is attributed to heating of the metal layer as well as transient desorption of the CO molecules. Due to the small photon energy (0.2 eV) used as pump pulses, the mechanism of desorption must be thermal, in which case the desorption yield depends exclusively on the fluence of absorbed light and not its wavelength. The thin Pt layers facilitate CO desorption, despite a relatively low pump pulse fluence, as they concentrate the absorbed energy in a small volume.
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Affiliation(s)
- Gökçen Tek
- Department of Chemistry, University of Zurich, Zurich, Switzerland
| | - Peter Hamm
- Department of Chemistry, University of Zurich, Zurich, Switzerland
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6
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Aslam U, Rao VG, Chavez S, Linic S. Catalytic conversion of solar to chemical energy on plasmonic metal nanostructures. Nat Catal 2018. [DOI: 10.1038/s41929-018-0138-x] [Citation(s) in RCA: 409] [Impact Index Per Article: 68.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Hong SY, Xu P, Camillone NR, White MG, Camillone N. Adlayer structure dependent ultrafast desorption dynamics in carbon monoxide adsorbed on Pd (111). J Chem Phys 2017; 145:014704. [PMID: 27394118 DOI: 10.1063/1.4954408] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
We report our ultrafast photoinduced desorption investigation of the coverage dependence of substrate-adsorbate energy transfer in carbon monoxide adlayers on the (111) surface of palladium. As the CO coverage is increased, the adsorption site population shifts from all threefold hollows (up to 0.33 ML), to bridge and near bridge (>0.5 to 0.6 ML) and finally to mixed threefold hollow plus top site (at saturation at 0.75 ML). We show that between 0.24 and 0.75 ML this progression of binding site motifs is accompanied by two remarkable features in the ultrafast photoinduced desorption of the adsorbates: (i) the desorption probability increases roughly two orders magnitude, and (ii) the adsorbate-substrate energy transfer rate observed in two-pulse correlation experiments varies nonmonotonically, having a minimum at intermediate coverages. Simulations using a phenomenological model to describe the adsorbate-substrate energy transfer in terms of frictional coupling indicate that these features are consistent with an adsorption-site dependent electron-mediated energy coupling strength, ηel, that decreases with binding site in the order: three-fold hollow > bridge and near bridge > top site. This weakening of ηel largely counterbalances the decrease in the desorption activation energy that accompanies this progression of adsorption site motifs, moderating what would otherwise be a rise of several orders of magnitude in the desorption probability. Within this framework, the observed energy transfer rate enhancement at saturation coverage is due to interadsorbate energy transfer from the copopulation of molecules bound in three-fold hollows to their top-site neighbors.
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Affiliation(s)
- Sung-Young Hong
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Pan Xu
- Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, USA
| | - Nina R Camillone
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Michael G White
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Nicholas Camillone
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, USA
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Butorac J, Wilson EL, Fielding HH, Brown WA, Minns RS. A RAIRS, TPD and femtosecond laser-induced desorption study of CO, NO and coadsorbed CO + NO on Pd(111). RSC Adv 2016. [DOI: 10.1039/c6ra13722a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Here we describe novel RAIRS, TPD and LID studies of CO, NO and coadsorbed CO and NO on Pd.
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Affiliation(s)
| | - Emma L. Wilson
- Department of Chemistry
- University College London
- London
- UK
| | | | - Wendy A. Brown
- Department of Chemistry
- University College London
- London
- UK
- Division of Chemistry
| | - Russell S. Minns
- Department of Chemistry
- University College London
- London
- UK
- Chemistry
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9
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Krooswyk JD, Yin J, Asunskis AL, Hu X, Trenary M. Spectroscopic evidence for a CO–O2 complex as a precursor to the low temperature oxidation of CO on the Pt(111) surface. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.01.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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10
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Petek H. Photoexcitation of adsorbates on metal surfaces: one-step or three-step. J Chem Phys 2013; 137:091704. [PMID: 22957546 DOI: 10.1063/1.4746801] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In this essay we discuss the light-matter interactions at molecule-covered metal surfaces that initiate surface photochemistry. The hot-electron mechanism for surface photochemistry, whereby the absorption of light by a metal surface creates an electron-hole pair, and the hot electron scatters through an unoccupied resonance of adsorbate to initiate nuclear dynamics leading to photochemistry, has become widely accepted. Yet, ultrafast spectroscopic measurements of molecule-surface electronic structure and photoexcitation dynamics provide scant support for the hot electron mechanism. Instead, in most cases the adsorbate resonances are excited through photoinduced substrate-to-adsorbate charge transfer. Based on recent studies of the role of coherence in adsorbate photoexcitation, as measured by the optical phase and momentum resolved two-photon photoemission measurements, we examine critically the hot electron mechanism, and propose an alternative description based on direct charge transfer of electrons from the substrate to adsorbate. The advantage of this more quantum mechanically rigorous description is that it informs how material properties of the substrate and adsorbate, as well as their interaction, influence the frequency dependent probability of photoexcitation and ultimately how light can be used to probe and control surface femtochemistry.
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Affiliation(s)
- Hrvoje Petek
- Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
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11
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Gawronski H, Mehlhorn M, Morgenstern K. Real-Space Investigation of Non-adiabatic CO2Synthesis. Angew Chem Int Ed Engl 2010; 49:5913-6. [DOI: 10.1002/anie.201001262] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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12
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Gawronski H, Mehlhorn M, Morgenstern K. Real-Space Investigation of Non-adiabatic CO2 Synthesis. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201001262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Mehlhorn M, Gawronski H, Morgenstern K. Diffusion and dimer formation of CO molecules induced by femtosecond laser pulses. PHYSICAL REVIEW LETTERS 2010; 104:076101. [PMID: 20366898 DOI: 10.1103/physrevlett.104.076101] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2009] [Indexed: 05/29/2023]
Abstract
We investigate two fundamental steps of a nonadiabatic surface process, the photo-induced movement and approach of CO molecules on the Cu(111) surface, at a hitherto unachieved single-molecule level through scanning tunneling microscope imaging. For the close approach of two CO molecules, we not only determine the nonadiabatic diffusion barrier (87 meV), but also discover a femto-second-laser-induced transient attraction (30 meV) of the usually repelling CO molecules.
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Affiliation(s)
- Michael Mehlhorn
- Abteilung ATMOS, Leibniz Universität Hannover, Appelstrasse 2, 30167 Hannover, Germany
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Olsen T, Schiøtz J. Origin of power laws for reactions at metal surfaces mediated by hot electrons. PHYSICAL REVIEW LETTERS 2009; 103:238301. [PMID: 20366180 DOI: 10.1103/physrevlett.103.238301] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2009] [Indexed: 05/16/2023]
Abstract
A wide range of experiments have established that certain chemical reactions at metal surfaces can be driven by multiple hot-electron-mediated excitations of adsorbates. A high transient density of hot electrons is obtained by means of femtosecond laser pulses and a characteristic feature of such experiments is the emergence of a power law dependence of the reaction yield on the laser fluence Y approximately F(n). We propose a model of multiple inelastic scattering by hot electrons which reproduces this power law and the observed exponents of several experiments. All parameters are calculated within density functional theory and the delta self-consistent field method. With a simplifying assumption, the power law becomes exact and we obtain a simple physical interpretation of the exponent n, which represents the number of adsorbate vibrational states participating in the reaction.
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Affiliation(s)
- Thomas Olsen
- Danish National Research Foundation's Center of Individual Nanoparticle Functionality (CINF), Department of Physics, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
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15
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Szymanski P, Harris AL, Camillone N. Temperature-dependent femtosecond photoinduced desorption in CO/Pd(111). J Phys Chem A 2007; 111:12524-33. [PMID: 17975899 DOI: 10.1021/jp075923w] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The desorption of CO from a Pd(111) surface following absorption of 120 fs pulses of 780 nm light occurs on two distinct and well-separated time scales. Two-pulse correlation measurements show a fast subpicosecond decay followed by a slower, approximately 40 ps decay. Simulations based on the two-temperature model of electron and phonon heat baths within the substrate, and an empirical friction model to treat coupling to the adsorbate, support the assignment of the desorption mechanism as an electron-mediated process. The photodesorption yield and overall width of the temporal response exhibit a marked dependence on the initial surface temperature in the 100-375 K range despite the much higher transient electronic temperatures (approximately 7000 K) achieved. The observed temperature dependences can be attributed directly to variations in the initial temperature within the frictional coupling picture. Simulations of this extended data set imply that the activation barrier to photoinduced desorption is equal in magnitude to that derived from thermal desorption experiments for this system within the limits of a one-dimensional Arrhenius desorption model. The simulations also imply that the slower decay is not the result of phonon-driven desorption. Though we cannot unambiguously determine the strength of the adsorbate-phonon coupling, our results suggest that its role is to moderate the degree of the adsorbate excitation.
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Affiliation(s)
- Paul Szymanski
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000, USA
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16
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Frischkorn C, Wolf M. Femtochemistry at metal surfaces: nonadiabatic reaction dynamics. Chem Rev 2007; 106:4207-33. [PMID: 17031984 DOI: 10.1021/cr050161r] [Citation(s) in RCA: 274] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Christian Frischkorn
- Freie Universität Berlin, Fachbereich Physik, Arnimallee 14, 14195 Berlin, Germany.
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Mehlhorn M, Gawronski H, Nedelmann L, Grujic A, Morgenstern K. An instrument to investigate femtochemistry on metal surfaces in real space. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2007; 78:033905. [PMID: 17411193 DOI: 10.1063/1.2432244] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
A newly established combination of a femtosecond laser with a low temperature scanning tunneling microscope is described, which facilitates one to analyze femtochemistry on metal surfaces in real space. The combined instrument enables focusing the laser to some tens of micrometers and guiding it reproducibly into the tunneling gap with the aid of in situ movable mirrors. Furthermore, a method to determine the focus size on the sample is presented. The focus size is used to calculate the electron and phonon temperatures at the surface. Despite the additional noise introduced by laser operation the vertical resolution of the microscope lies below 1 pm. The potential of the instrument is demonstrated on para-chloronitrobenzene clusters adsorbed on Au(111). Single chloronitrobenzene molecules diffuse upon femtosecond laser irradiation; some smaller clusters rotate by multiples of 30 degrees ; clusters of less compact form rearrange to close-packed clusters.
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Affiliation(s)
- Michael Mehlhorn
- Institut für Festkörperphysik, Leibniz Universität Hannover, Appelstrasse 2, D-30167 Hannover, Germany
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18
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Velocity distribution of CO desorbing from NiO(100)/Ni(100) after picosecond UV laser irradiation. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2005.12.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Bauer C, Abid JP, Girault HH. Size dependence investigations of hot electron cooling dynamics in metal/adsorbates nanoparticles. Chem Phys 2005. [DOI: 10.1016/j.chemphys.2005.06.040] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Stépán K, Güdde J, Höfer U. Time-resolved measurement of surface diffusion induced by femtosecond laser pulses. PHYSICAL REVIEW LETTERS 2005; 94:236103. [PMID: 16090486 DOI: 10.1103/physrevlett.94.236103] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2005] [Indexed: 05/03/2023]
Abstract
Diffusion of atomic oxygen on a vicinal Pt111 surface induced by femtosecond laser pulses has been studied using optical second-harmonic generation as a sensitive in situ probe of the step coverage. Time-resolved studies of the hopping rate for step-terrace diffusion with a two-pulse correlation scheme reveal a time constant of 1.5 ps for the energy transfer from the electronic excitation of the substrate to the frustrated translations of the adsorbate.
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Affiliation(s)
- K Stépán
- Fachbereich Physik und Zentrum für Materialwissenschaften, Philipps-Universität, D-35032 Marburg, Germany
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21
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Bauer C, Abid JP, Fermin D, Girault HH. Ultrafast chemical interface scattering as an additional decay channel for nascent nonthermal electrons in small metal nanoparticles. J Chem Phys 2004; 120:9302-15. [PMID: 15267867 DOI: 10.1063/1.1710856] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The use of 4.2 nm gold nanoparticles wrapped in an adsorbates shell and embedded in a TiO2 metal oxide matrix gives the opportunity to investigate ultrafast electron-electron scattering dynamics in combination with electronic surface phenomena via the surface plasmon lifetimes. These gold nanoparticles (NPs) exhibit a large nonclassical broadening of the surface plasmon band, which is attributed to a chemical interface damping. The acceleration of the loss of surface plasmon phase coherence indicates that the energy and the momentum of the collective electrons can be dissipated into electronic affinity levels of adsorbates. As a result of the preparation process, gold NPs are wrapped in a shell of sulfate compounds that gives rise to a large density of interfacial molecules confined between Au and TiO2, as revealed by Fourier-transform-infrared spectroscopy. A detailed analysis of the transient absorption spectra obtained by broadband femtosecond transient absorption spectroscopy allows separating electron-electron and electron-phonon interaction. Internal thermalization times (electron-electron scattering) are determined by probing the decay of nascent nonthermal electrons (NNEs) and the build-up of the Fermi-Dirac electron distribution, giving time constants of 540 to 760 fs at 0.42 and 0.34 eV from the Fermi level, respectively. Comparison with literature data reveals that lifetimes of NNEs measured for these small gold NPs are more than four times longer than for silver NPs with similar sizes. The surprisingly long internal thermalization time is attributed to an additional decay mechanism (besides the classical e-e scattering) for the energy loss of NNEs, identified as the ultrafast chemical interface scattering process. NNEs experience an inelastic resonant scattering process into unoccupied electronic states of adsorbates, that directly act as an efficient heat bath, via the excitation of molecular vibrational modes. The two-temperature model is no longer valid for this system because of (i) the temporal overlap between the internal and external thermalization process is very important; (ii) a part of the photonic energy is directly transferred toward the adsorbates (not among "cold" conduction band electrons). These findings have important consequence for femtochemistry on metal surfaces since they show that reactions can be initiated by nascent nonthermal electrons (as photoexcited, out of a Fermi-Dirac distribution) besides of the hot electron gas.
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Affiliation(s)
- Christophe Bauer
- Laboratoire d'Electrochimie Physique et Analytique, Institut de Chimie Moléculaire et Biologique, Faculté des Sciences de Base, Ecole Polytechnique Fédérale de Lausanne, Switzerland.
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22
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Baggott SR, Kolasinski KW, Perdigão LMA, Riedel D, Guo Q, Palmer RE. Vacuum ultraviolet surface photochemistry of water adsorbed on graphite. J Chem Phys 2002. [DOI: 10.1063/1.1506143] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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23
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Cai L, Xiao X, Loy MMT. Desorption of polyatomic molecules from the Pt(111) surface by femtosecond laser radiation. J Chem Phys 2001. [DOI: 10.1063/1.1413989] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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Abstract
Theoretical aspects of dynamical processes at metal surfaces are reviewed. Experimental challenges to theory are presented and progress toward meeting these challenges is appraised. Topics include adsorbate vibrational energy flow, inelastic molecule-surface scattering, adsorption, transient mobility, dissociation, desorption, photochemistry, and electron-induced chemistry at metal surfaces. Experimental examples cited illustrate the richness of dynamical phenomena to be understood and the necessity of developing multidimensional, beyond Born-Oppenheimer, formulations of adsorbate dynamics. Classical mechanical and quantum mechanical treatments of dynamics are contrasted. The importance of including phonon and electron-hole pair dissipation in theories of adsorbate dynamics is emphasized, and strategies for doing this in classical and quantum treatments are presented.
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Affiliation(s)
- J C Tully
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, USA.
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25
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Funk S, Bonn M, Denzler DN, Hess C, Wolf M, Ertl G. Desorption of CO from Ru(001) induced by near-infrared femtosecond laser pulses. J Chem Phys 2000. [DOI: 10.1063/1.481626] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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26
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Cáceres J, Tornero López J, González Ureña A. Laser catalysis of acrylonitrile on copper surfaces. Chem Phys Lett 2000. [DOI: 10.1016/s0009-2614(00)00344-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Tsuyumoto I, Sawada T. Ultrafast Energy Transfer Dynamics at Solid/Liquid Interfaces as Investigated by Photothermal Spectroscopy. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2000. [DOI: 10.1246/bcsj.73.507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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28
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Gadzuk J. Hot-electron femtochemistry at surfaces: on the role of multiple electron processes in desorption. Chem Phys 2000. [DOI: 10.1016/s0301-0104(99)00299-2] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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29
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Guo H, Ma G. Dissipative quantum dynamics in discrete energy representation: Photon-stimulated desorption of NO from metals. J Chem Phys 1999. [DOI: 10.1063/1.480220] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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30
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Bonn M, Funk S, Hess C, Denzler DN, Stampfl C, Scheffler M, Wolf M, Ertl G. Phonon- versus electron-mediated desorption and oxidation of CO on Ru(0001). Science 1999; 285:1042-5. [PMID: 10446045 DOI: 10.1126/science.285.5430.1042] [Citation(s) in RCA: 235] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Heating of a ruthenium surface on which carbon monoxide and atomic oxygen are coadsorbed leads exclusively to desorption of carbon monoxide. In contrast, excitation with femtosecond infrared laser pulses enables also the formation of carbon dioxide. The desorption is caused by coupling of the adsorbate to the phonon bath of the ruthenium substrate, whereas the oxidation reaction is initiated by hot substrate electrons, as evidenced by the observed subpicosecond reaction dynamics and density functional calculations. The presence of this laser-induced reaction pathway allows elucidation of the microscopic mechanism and the dynamics of the carbon monoxide oxidation reaction.
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Affiliation(s)
- M Bonn
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
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31
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Sano M, Ohno Y, Yamanaka T, Matsushima T, Quinay EB, Jacobi K. Hot-atom mechanism in photodesorption of molecular oxygen from a stepped platinum (113) surface. J Chem Phys 1998. [DOI: 10.1063/1.476483] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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32
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Eichhorn G, Richter M, Al-Shamery K, Zacharias H. Time-correlated laser desorption of NO from NiO(100)/Ni(100). Chem Phys Lett 1998. [DOI: 10.1016/s0009-2614(98)00418-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Her TH, Finlay RJ, Wu C, Mazur E. Surface femtochemistry of CO/O2/Pt(111): The importance of nonthermalized substrate electrons. J Chem Phys 1998. [DOI: 10.1063/1.476289] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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Thiel S, Klüner T, Wilde M, Al-Shamery K, Freund HJ. The role of the initial population of molecular vibrations in surface photochemistry. Chem Phys 1998. [DOI: 10.1016/s0301-0104(97)00326-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Finlay RJ, Her TH, Wu C, Mazur E. Reaction pathways in surface femtochemistry: routes to desorption and reaction in CO/O2/Pt(111). Chem Phys Lett 1997. [DOI: 10.1016/s0009-2614(97)00708-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Femtochemistry at Pt/aqueous solution interfaces as observed by transient reflectivity measurements. Chem Phys Lett 1997. [DOI: 10.1016/s0009-2614(97)00496-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Struck LM, Richter LJ, Buntin SA, Cavanagh RR, Stephenson JC. Femtosecond Laser-Induced Desorption of CO from Cu(100): Comparison of Theory and Experiment. PHYSICAL REVIEW LETTERS 1996; 77:4576-4579. [PMID: 10062573 DOI: 10.1103/physrevlett.77.4576] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Busch DG, Ho W. Direct Observation of the Crossover from Single to Multiple Excitations in Femtosecond Surface Photochemistry. PHYSICAL REVIEW LETTERS 1996; 77:1338-1341. [PMID: 10063051 DOI: 10.1103/physrevlett.77.1338] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Ho W. Reactions at Metal Surfaces Induced by Femtosecond Lasers, Tunneling Electrons, and Heating. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp9535497] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- W. Ho
- Laboratory of Atomic and Solid State Physics and Materials Science Center, Cornell University, Ithaca, New York 14853-2501
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Tripa CE, Arumaninayagam CR, Yates JT. Kinetics measurements of CO photo‐oxidation on Pt(111). J Chem Phys 1996. [DOI: 10.1063/1.472027] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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