Million-fold Increase of the Conductivity in TiO2Rutile through 3% Niobium Incorporation

Girija Sahasrabudhe, Jason Krizan, Susanna L. Bergman, Robert Joseph Cava, Jeffrey Schwartz

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

A study was specifically designed to find the optimal doping conditions relevant to polycrystalline electrode material. The study proposed a general model to explain how fundamental electronic and structural properties of rutile TiO2 correlate with increasing Nb incorporation. An optimal doping level of 3%, with 6 orders of magnitude increase in the conductivity on doping was found. Grinding and heating processes were repeated until phase-pure powder X-ray diffraction (pXRD) rutile patterns were obtained for each mixture. Polycrystals were analyzed by X-ray photoelectron spectroscopy (XPS) to determine the oxidation states of Nb and Ti for each doping level of Nb-TiO2.

Original languageEnglish (US)
Pages (from-to)3630-3633
Number of pages4
JournalChemistry of Materials
Volume28
Issue number11
DOIs
StatePublished - Jan 1 2016

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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