Adsorption and temperature-dependent decomposition ofSO2on Cu(100) and Cu(111): A fast and high-resolution core-level spectroscopy study

The chemisorption of SO2 on the Cu/Au(111) surface: Interplay between ensemble and electronic effects

“…6 indicate that there was no cleavage of S-O bonds on the bimetallic surface. From previous studies it is known that SO 2 easily dissociates on Cu(1 0 0) and Cu(1 1 1) [13][14][15][16][17]32,33]. Comparing to photoemission data reported for SO 2 on pure Au(1 1 1) [18], we find similar results.…”

“…7 and 8, unlike the cases of SO 2 /Cu(1 0 0) and SO 2 /Cu(1 1 1) mentioned above [13][14][15][16][17]32,33]. In Fig.…”

“…7 displays S 2p and O 1s core level spectra acquired after dosing SO 2 at 100 K (followed by heating to the indicated temperatures) on Au(1 1 1) pre-deposited with 0.4 ML of Cu at 100 K. One can see that the S 2p and O 1s signals still remained by 350 K and they disappeared by 400 K. As we will see below, the position of the S 2p features at room temperature denotes the presence of chemisorbed SO 2 and no signal is seen in the 164-161 eV region where the features for chemisorbed S are expected [3,5,6]. The Cu 0.4 /Au(1 1 1) surface binds SO 2 more strongly than Au(1 1 1) [18] but more weakly than Cu(1 0 0) or Cu(1 1 1) [13][14][15][16][17]32,33]. Fig.…”

Adsorption and Reaction of SO2 on Graphene-Supported Pt Nanoclusters

“…In general, atomic sulfur and its oxides, SO x (x = 1-4) exhibit a rich surface chemistry on noble metals [23][24][25][26]. A number of different adsorption states has been reported for SO x and the wide range of possible oxidation states leads to several feasible reaction pathways [27][28][29][30][31][32][33][34][35]. The adsorption of SO 2 on Pt single crystals was investigated with different techniques including temperature programmed desorption (TPD) [36,37], electron energy loss spectroscopy (EELS) [38], X-ray absorption fine structure (XAFS) [30], UV-and X-ray photoelectron spectroscopy (UPS, XPS) [29-31, 38, 39], infrared reflection absorption spectroscopy (IRAS) [32] and density functional theory (DFT) [32][33][34][35].…”

Techniques for the Study of the Electronic Properties.

“…77,78 The acquisition of spectra can be very fast, and chemical transformations can be followed as a function of time. 88,89,90 Valence Photoemission. Depending on their energy, the levels occupied by the electrons in a nanoparticle can be labeled as core (> 50 eV), semi-core or valence (< 20 eV).…”