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

Girija Sahasrabudhe; Jason Krizan; Susanna L. Bergman; Robert J. Cava; Jeffrey Schwartz

doi:10.1021/acs.chemmater.6b02031

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

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

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29 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 language	English (US)
Pages (from-to)	3630-3633
Number of pages	4
Journal	Chemistry of Materials
Volume	28
Issue number	11
DOIs	https://doi.org/10.1021/acs.chemmater.6b02031
State	Published - Jun 14 2016

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
Materials Chemistry

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10.1021/acs.chemmater.6b02031

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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.",

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AU - Sahasrabudhe, Girija

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AU - Cava, Robert J.

AU - Schwartz, Jeffrey

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AB - 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.

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

Abstract

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