%0 Online Multimedia
%A Li, Shao-Chun
%A Jacobson, Peter
%A Zhao, Shu-Lei
%A Gong, Xue-Qing
%A Diebold, Ulrike
%D 2012
%T Trapping Nitric Oxide by Surface Hydroxyls on Rutile TiO2(110)
%U https://acs.figshare.com/articles/media/Trapping_Nitric_Oxide_by_Surface_Hydroxyls_on_Rutile_TiO_sub_2_sub_110_/2558011
%R 10.1021/jp209290a.s002
%2 https://acs.figshare.com/ndownloader/files/4201087
%K surface hydroxyl
%K Surface Hydroxyls
%K room temperature adsorption
%K TiO
%K oxide surfaces
%K Trapping Nitric Oxide
%K DFT calculations
%K species influence surface chemistry
%K STM
%K ambient conditions
%K XPS
%K nitric oxide
%K scanning tunneling microscopy
%K adsorbate
%X Hydroxyls are omnipresent on oxide surfaces under ambient conditions. While they unambiguously play an important role in many catalytic processes, it is not well-understood how these species influence surface chemistry at atomic scale. We investigated the adsorption of nitric oxide (NO) on a hydroxylated rutile TiO2(110) surface with scanning tunneling microscopy (STM), X-ray/ultraviolet photoemission spectroscopy (XPS/UPS), and density functional theory (DFT) calculations. At room temperature adsorption of NO is only possible in the vicinity of a surface hydroxyl, and leads to a change of the local electronic structure. DFT calculations confirm that the surface hydroxyl-induced excess charge is transferred to the NO adsorbate, which results in an electrostatic stabilization of the adsorbate and, consequently, a significantly stronger bonding.
%I ACS Publications