Studies of Gas Sensing Performance of Barium Zirconate (BaZrO3)

Autor:	R. M. CHAUDHARI, V. B. GAIKWAD, P. D. HIRE, R. L. PATIL, S. D. SHINDE, N. U. PATIL, G. H. JAIN
Jazyk:	angličtina
Rok vydání:	2011
Předmět:	Thick films Sensitivity Ammonia gas sensor Chromination lcsh:Technology (General) lcsh:T1-995 Selectivity BaZrO3
Zdroj:	Sensors & Transducers, Vol 127, Iss 4, Pp 76-87 (2011)
ISSN:	1726-5479 2306-8515
Popis:	Barium Zirconate (BaZrO3) was prepared by mechano-chemical process. The thick films were prepared by screen printing technique and gas-sensing performance of these films was tested for various gases. The films showed highest response and selectivity to Ammonia (NH3) gas. BST thick films were surface modified by dipping them into an aqueous solution of CrO3 for different intervals of time. Surface modification enhanced the response to Ammonia gas and suppressed the responses to other gases. The surface modification, using dipping process, altered the adsorbate-adsorbent interactions, resulting in to the unusual sensitivity and selectivity effect. Sensitivity, selectivity, thermal stability, response and recovery time of the sensor were measured and presented.
Databáze:	OpenAIRE
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