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Porous Nickel Oxide Sensor for Formaldehyde Detection
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Fasta tillståndets fysik.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Fasta tillståndets fysik.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Fasta tillståndets fysik.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Fasta tillståndets fysik.
Vise andre og tillknytning
2014 (engelsk)Inngår i: European Materials Society (E-MRS) Spring Meeting, Lille, France, May 26-30, 2014.: Symposium B: Advanced functional materials for environmental monitoring and applications., 2014Konferansepaper, Poster (with or without abstract) (Annet vitenskapelig)
Abstract [en]

Formaldehyde is a volatile organic compound, which is a harmful indoor pollutant, causing sick building syndrome (SBS) and is released from household and building materials. Since higher concentrations of formaldehyde are considered to be carcinogenic, monitoring them indoors is of great importance. Advanced gas deposition has here been used to fabricate highly porous nickel oxide (NiO) thin films for formaldehyde sensing. The films were deposited on Al2O3 substrates with prefabricated comb-structured electrodes, and a resistive heater at the opposite face. The morphology of the films was investigated with scanning electron microscopy, and the porosity was determined by nitrogen adsorption isotherms with the Brunauer-Emmett-Teller method. The particle size was found to be less than 10 nm, as determined by x-ray diffraction. X-ray photoelectron spectroscopy of the NiO films was also done. Gas sensing measurements were done using a total gas flow rate of 200 ml/min. Resistivity values of sensors were recorded with formaldehyde diluted in synthetic air. Sensor resistances were recorded at 50 ppm, 25ppm, 10ppm and 5 ppm formaldehyde concentration. NiO films showed promising formaldehyde gas sensing properties implying lower levels of detection limit.

sted, utgiver, år, opplag, sider
2014.
Serie
European Materials Society (E-MRS) Spring Meeting ; B.PI 21
HSV kategori
Forskningsprogram
Teknisk fysik med inriktning mot fasta tillståndets fysik
Identifikatorer
URN: urn:nbn:se:uu:diva-237555OAI: oai:DiVA.org:uu-237555DiVA, id: diva2:768225
Konferanse
European Materials Society (E-MRS) Spring Meeting, Lille, France, May 26-30, 2014.
Forskningsfinansiär
EU, FP7, Seventh Framework Programme, 267234Tilgjengelig fra: 2014-12-03 Laget: 2014-12-03 Sist oppdatert: 2015-01-07

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Cindemir, UmutTopalian, ZarehÖsterlund, LarsGranqvist, Claes-GöranNiklasson, Gunnar A.

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