Author/Authors :
Sayago، نويسنده , , D.I and Serrano، نويسنده , , P and B?hme، نويسنده , , O and Goldoni، نويسنده , , A and Paolucci، نويسنده , , G and Rom?n، نويسنده , , E and Mart??n-Gago، نويسنده , , J.A، نويسنده ,
Abstract :
We have investigated the adsorption of the SO2 molecule on a TiO2(1 1 0) single crystal at a substrate temperature of 120 K by means of core level synchrotron radiation photoemission. By studying the S 2p and O 2s core level peaks, we show that from the first adsorption stages up to the saturation coverage, SO2 adsorbs molecularly on the TiO2(1 1 0)-(1×1) surface forming a sulphite–sulphate-like mixed and disordered adsorbed layer. The bridge oxygen atoms of the clean surface are involved in the oxidation of the molecule.
Keywords :
Titanium oxide , Synchrotron radiation photoelectron spectroscopy , Chemisorption , Sulphur Dioxide
