Sensitivity enhancement for CO gas detection using a SnO2–CeO2–PdOx system

Autor:	Il Jin Kim, Ishwar Singh, Hi Doek Lee, Jin Suk Wang, Sang Do Han
Rok vydání:	2005
Předmět:	Materials science Materials Chemistry Metals and Alloys Analytical chemistry Working temperature Electrical and Electronic Engineering Condensed Matter Physics Instrumentation Sensitivity (electronics) Surfaces Coatings and Films Electronic Optical and Magnetic Materials Sol-gel
Zdroj:	Sensors and Actuators B: Chemical. 107:825-830
ISSN:	0925-4005
Popis:	Thick film CO sensors were fabricated using SnO 2 loaded with CeO 2 and PdO x . The composition that gave highest sensitivity for CO was in the wt.% ratio of SnO 2 :CeO 2 :PdO x as 94:5:1. The nano-crystalline powders of SnO 2 –CeO 2 –PdO x composites synthesized by sol–gel method were screen-printed on alumina substrates. The fabricated sensors were also tested against other gases like H 2 , CH 4 , C 3 H 8 , C 2 H 5 OH, NO x and SO 2 . The composite material was found sensitive against CO in the working temperature range between 120 and 180 °C, with minor interference of other gases. The CO gas as low as 40 ppm can be detected by the present fabricated sensors.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::08e49041a108bbe408559a2ab33bb6db https://doi.org/10.1016/j.snb.2004.12.036 Zobrazit plný text záznamu Full Text from ScienceDirect