Electronic structure of N doped TiO$_{2}$: Hard x-ray photoemission study

ORAL

Abstract

We have determined the electronic structure of N doped TiO$_{2}$ using a combination of synchrotron based hard x-ray photoemission spectroscopy (HAXPES) and first principle density functional theory calculations. Comparison with calculations and experiment reveals strong evidence of hybridization between different orbital components. Our results reveal that N doping of TiO$_2$ leads to the formation of oxygen vacancies and the combination of both N impurity and oxygen vacancies accounts for the observed visible light catalytic behavior of Ndoped TiO$_2$.

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Authors

  • Abdul Rumaiz

    • National Synchrotron Light Source, Brookhaven National Laboratory

  • Joseph Woicik

    • National Institute of Standards and Technology

  • Eric Cockayne

    • National Institute of Standards and Technology

  • Hong Lin

    • Dept of Materials Science and Egineering, University of Delaware

  • Ghulam Jaffari

    • Department of Physics and Astronomy, University of Delaware, Newark DE 19716
    • Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, USA
    • Dept. of Physics and Astronomy, University of Delaware

  • Syed Shah

    • Department of Material Science and Engineering; Department of Physics and Astronomy, Univeristy of Delaware, Newark, DE 19716, USA,
    • Dept of Materials Science and Egineering, University of Delaware
    • Materails Science and Engineering, University of Delaware