✦ LIBER ✦

Surface femtochemistry of 02 and CO on Pt(111)

✍ Scribed by S. Deliwala; R.J. Finlay; J.R. Goldman; T.H. Her; W.D. Mieher; E. Mazur

Publisher: Elsevier Science
Year: 1995
Tongue: English
Weight: 547 KB
Volume: 242
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(95)00791-2

No coin nor oath required. For personal study only.

✦ Synopsis

Desorption of 0, and formation of CO, were induced with subpicosecond laser pulses on a Pt(ll1) surface dosed with coadsorbed 0, and CO. We report the fluence dependent yields obtained over a range of laser wavelengths from 267 to 800 nm, and pulse durations from 80 fs to 3.6 ps. The nonlinear dependence of the yield on fluence is different at different wavelengths. Two-pulse correlation measurements show two different time-scales relevant to the desorption. The results show that nonthermalized electrons play a role in the surface chemistry, and that an equilibrated pre-heating of the surface modes leads to enhanced desorption.

' UT1 1oOC operating in pulse counting mode.

📜 SIMILAR VOLUMES

CO adsorbate on Pt(111) single crystal s

CO adsorbate on Pt(111) single crystal surfaces

✍ E. Santos; E.P.M. Leiva; W. Vielstich 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 601 KB

The electrooxidation of CO adsorbate on well ordered Pt(ll1) surfaces is studied through a flow-cell technique. Potentiodynamic sweeps and potential steps are used to characterize the kinetic behaviour of the adsorbate. The effect of surface disturbance when the electrode is cycled into the oxide fo

Adsorption Isotherm of CO on Pt(111) Ele

Adsorption Isotherm of CO on Pt(111) Electrodes

✍ Angel Cuesta; María del Carmen Pérez; Alejandro Rincón; Claudio Gutiérrez 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 118 KB

CO Oxidation on Pt-Modified Rh(111) Elec

CO Oxidation on Pt-Modified Rh(111) Electrodes

✍ T. H. M. Housmans; J. M. Feliu; R. Gómez; M. T. M. Koper 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 173 KB

Study of the methanol adsorbates on Pt(1

Study of the methanol adsorbates on Pt(100) and Pt(111) single crystal surfaces

✍ B. Bittins-Cattaneo; E. Santos; W. Vielstich; U. Linke 📂 Article 📅 1988 🏛 Elsevier Science 🌐 English ⚖ 668 KB

The formation of methanol adsorbate as a structure sensitive process was studied on platinum single crystal surfaces. The measurements were performed on reproducibly prepared, clean and either well ordered ("undisturbed") or cycled ("disturbed") Pt(100) and Pt(ll1) single crystal electrodes. Essenti

Co-underpotential deposition of copper a

Co-underpotential deposition of copper and zinc ions on Pt(111)

✍ S.A.Abd El-Maksoud; Satoshi Taguchi; Toshihiro Fukuda; Akiko Aramata 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 553 KB

The co-underpotential deposition (co-upd) of Cu' + and Zn\* + ions was examined on Pt( 111) by voltammetry, as their upd occur in well separated ranges of potential. Their apd processes were observed to take place by transfer of two electrons in conformity with the Nemst equation. In phosphate solut

Ultrathin Films of Co on Pt(111): an STM

Ultrathin Films of Co on Pt(111): an STM View

✍ Varga, P. ;Lundgren, E. ;Redinger, J. ;Schmid, M. 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 584 KB