Application of SnO2 Nanoparticles and Zeolites in Coal Mine Methane Sensors

Autor:	Rafael Colombo Abruzzi, Marçal José Rodrigues Pires, Berenice Anina Dedavid, Camila Fensterseifer Galli
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	Solid-state sensor metal-oxide coal mine atmospheres CO2 filter zeolites Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research, Vol 22, Iss suppl 1 (2019)
Druh dokumentu:	article
ISSN:	1516-1439 1980-5373
DOI:	10.1590/1980-5373-mr-2018-0818
Popis:	We evaluated solid-state sensors (MOS) manufactured using nanostructured tin oxide (SnO2) obtained by different synthesis methods for selectivity, response and repeatability at different operating temperatures and methane concentrations. In addition, Zeolite 13X pellets were placed in front of the sensors to improve CH4 selectivity in the presence of CO2. The palladium doped sensor (1.4% w/w) showed the highest sensitivity at 80 ºC (83%) and shorter response times (16 s), whereas non-doped sensors exhibited the best sensitivity (78%) and response times (14 s) for those with smaller particle size (8 nm). Zeolite 13X pellets proved to be efficient at making the sensor more selective for CH4 in the presence of CO2.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/6d8637440d4147ad8f999cae1bbe1a0e Zobrazit plný text záznamu View record in DOAJ