Effects of Heat Treatment and Doping of Nb5+ on Sensitivity Properties of TiO2-based Material

Abstract

Abstract: Titanium is a premium metal-oxide material sensitive to trimethylamine (TMA) gas. To obtain high
sensitivity and low power of elements, annealing in N₂, doping with Nb⁵⁺ and long-time sintering were applied to improve the conductivity
of TiO₂-based sensitive materials. It is concluded that low oxygen pressure can enhance self-semiconductorization. Doping with 10% Nb⁵⁺
that substitutes for Ti⁴⁺ and long-time sintering that promotes conversion from Ti³⁺ to Ti⁴⁺ can improve conductivity of material and
stability of elements. As a result, a new method is procured to make low-resistance sensor with high sensitivity and good selectivity.

Key words: TiO₂, annealing in N₂, doping with Nb⁵⁺, long-time sintering

CLC Number:

TN304

PEI Su-Hua,SUN Hai-Bo,WANG Qiang,SUN Zhen-Cui,SHI Li-Wei. Effects of Heat Treatment and Doping of Nb⁵⁺ on Sensitivity Properties of TiO₂-based Material[J]. Journal of Inorganic Materials.

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Effects of Heat Treatment and Doping of Nb⁵⁺ on Sensitivity Properties of TiO₂-based Material

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