Effects of calcining temperature on lattice constants and gas-sensing properties of Nb2O5

The effect of different calcining temperatures on the lattice constants of the metal oxide semiconductor Nb2O5 was investigated using powder XRD. The crystal structure, lattice constants and crystallite size changed with the different calcining temperatures. The electrical resistance and the gas-sen...

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Veröffentlicht in:	Materials letters 2001-07, Vol.49 (5), p.277-281
Hauptverfasser:	WANG, Yu-De, YANG, Lui-Fang, ZHOU, Zhen-Lai, LI, Yan-Feng, WU, Xing-Hui
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical chemistry Chemical analysis and related physical methods of analysis Chemistry Condensed matter: structure, mechanical and thermal properties Exact sciences and technology General equipment and techniques General, instrumentation Inorganic compounds Instruments, apparatus, components and techniques common to several branches of physics and astronomy Physics Sensors (chemical, optical, electrical, movement, gas, etc.) remote sensing Structure of solids and liquids crystallography Structure of specific crystalline solids Water, oxides, hydroxides, peroxides
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Zusammenfassung:	The effect of different calcining temperatures on the lattice constants of the metal oxide semiconductor Nb2O5 was investigated using powder XRD. The crystal structure, lattice constants and crystallite size changed with the different calcining temperatures. The electrical resistance and the gas-sensing properties of the gas sensor based on Nb2O5 for petrol, i-C4H10, H2 and C2H5OH gases were different at the different calcining temperatures. The Nb2O5 gas sensor exhibited good sensitivity and selectivity for petrol after calcining at 1000 C. 9 refs.
ISSN:	0167-577X 1873-4979
DOI:	10.1016/S0167-577X(00)00384-0