Interactions of small molecules with TiO2(110) surfaces: The role of defects

Abstract

Articles you may be interested inInfrared spectroscopy study of adsorption and photodecomposition of formic acid on reduced and defective rutile TiO2 (110) surfaces J. Vac. Sci. Technol. A 32, 061402 (2014); 10.1116/1.4898568 Role of surface intermediates in enhanced, uniform growth rates of TiO2 atomic layer deposition thin films using titanium tetraisopropoxide and ozone J. Vac. Sci. Technol. A 30, 01A150 (2012); 10.1116/1.3669522 Structure, stability, and mobility of small Pd clusters on the stoichiometric and defective TiO2 (110) surfaces Interaction of water, oxygen, and hydrogen with TiO2(110) surfaces having different defect densities

CO oxidation over supported Pt clusters at different CO coverage

“…To further investigate the effects of temperature and pressure on the stability of various CO@Pt 14 /TiO 2 structures based on DFT calculations, the free energy diagrams were calculated based on DFT results and shown in Figure . It can be seen that for low values of CO chemical potential below −2.0 eV, the thermodynamically most stable structure is clean Pt 14 /TiO 2 .…”

“…A (5 × 2) TiO 2 (110) surface unit cell, a 1 x 2 k ‐point sampling set, and the theoretically derived lattice constants ( a = 4.69 Å, a = 2.99 Å, and u = 0.305) were used. Since the TiO 2 (110) slab is rather thin its redox state was controlled by adsorbed species on the slab surface rather than by bulk defects as proposed in prior work . Reduced slabs were realized by H adsorption on protruding Obr sites.…”

STM study of glycine on TiO2(110) single crystal surfaces

“…In our experience, TiO 2 (110)-(1×2) surfaces contain a large number of oxygen vacancy lines due to the very large number of sputtering treatments. On the TiO 2 (110)-(1 × 1) surface, low densities of oxygen vacancies can lead to higher coverages and new redox reaction pathways for formic acid, but do not appear to alter the long range (2 × 1) ordering of saturated carboxylate layers [47][48][49][50]. In contrast, Bennett et al [51] have suggested that the oxygen vacancy lines or crosslinks are sites for preferential adsorption of formic acid on the (1 × 2) reconstructed surface.…”

Structure, defects, and impurities at the rutile TiO2(011)-(2×1) surface: A scanning tunneling microscopy study

“…Slightly sputtered rutile (1 1 0) surfaces have been used in many experiments in order to test the influence of surface reduction on adsorption of gases and metal overlayer growth [43][44][45][46][47][48]. Fig.…”