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

Banerjee, S and Ghosh, J and Chakraborty, A and Bera, A and Bhattacharya, A (2021) 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. In: Chemical Physics Letters, 784 .

PDF che_phy_let_784_2021 - Published Version Restricted to Registered users only Download (1MB) | Request a copy

Abstract

Conventional thermal activation-based methods (such as temperature programmed desorption measurements) can monitor recombinative Oadsorbed + Oadsorbed = O2,gas desorption only from the (�5X�5)R27O-O and p(2x2)-O phases on the single crystal Pd(1 0 0) surface. Both the c(2X2)-O and p(5X5)-O phases remain silent in this overall thermally activated recombinative desorption process. With the help of femtosecond laser excitation, for the first time, we demonstrate that both c(2X2)-O and p(5X5)-O phases can be made active for the recombinative Oadsorbed + Oadsorbed = O2,gas desorption. Thus, femtosecond laser excitation opens door to the investigation of the surface chemical reactions which otherwise cannot be probed with the help of conventional thermal heating process. Finally, ultrafast dynamics of the recombinative Oadsorbed + Oadsorbed = O2,gas desorption from the c(2X2)-O and p(5X5)-O phases is presented. © 2021 Elsevier B.V.

Item Type:	Journal Article
Publication:	Chemical Physics Letters
Publisher:	Elsevier B.V.
Additional Information:	The copyright for this article belongs to Elsevier B.V.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	28 Nov 2021 07:39
Last Modified:	28 Nov 2021 07:39
URI:	http://eprints.iisc.ac.in/id/eprint/70410

Actions (login required)

View Item