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Dengfang Tang, Xiao Chen, Qing Guo, Wenshao Yang. Effects of Surface Defects on the Adsorption of CO and Methyl Groups on Rutile TiO2(110)[J]. Chinese Journal of Chemical Physics .
Citation: Dengfang Tang, Xiao Chen, Qing Guo, Wenshao Yang. Effects of Surface Defects on the Adsorption of CO and Methyl Groups on Rutile TiO2(110)[J]. Chinese Journal of Chemical Physics .

Effects of Surface Defects on the Adsorption of CO and Methyl Groups on Rutile TiO2(110)

  • Received Date: 2020-12-31
  • Accepted Date: 2021-02-03
  • Rev Recd Date: 2021-01-26
  • Available Online: 2021-03-19
  • The interaction of reactants with catalysts has always been an important subject for catalytic reactions. As a promising catalyst with versatile applications, titania has been intensively studied for decades. In this paper we have investigated the role of bridge bonded oxygen vacancy (O<sub>v</sub>) in methyl groups and CO adsorption on rutile TiO<sub>2</sub>(110) (R-TiO<sub>2</sub>(110)) with the temperature programmed desorption (TPD) technique. The results show a clear different tendency of the desorption of methyl groups adsorbed on bridge bonded oxygen (O<sub>b</sub>), and CO molecules on the five coordinate Ti<sup>4+</sup> sites (Ti<sub>5c</sub>) as the O<sub>v</sub> concentration changes, suggesting that the surface defects may have crucial influence on the absorption of species on different sites of R-TiO<sub>2</sub>(110).

     

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      沈阳化工大学材料科学与工程学院 沈阳 110142

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