Au Nanoparticles as Gate Material for NOx Field Effect Capacitive Sensors
2008 (English)In: Sensor letters, ISSN 1546-198X (print) 1546-1971 (online), Vol. 6, no 4, 577-584 p.Article in journal (Refereed) Published
Gold nanoparticles (Au-NPs) are electrochemically synthesized in the presence of tetra-alkylammonium stabilizers and used as active element in Field Effect capacitive gas sensors. Before use, the sensing area is treated by a relatively mild annealing procedure aimed to partially remove the organic stabilizer without loosing the nano-structured character of the particles. Both pristine and annealed materials have been subjected to a spectroscopic and morphological characterization (by means of UV-Vis, XPS, TEM, SEM techniques). Preliminary results on the application of AuNPs as gate material for NO, sensing are reported. The sensor is able to detect NO, with appreciable selectivity and low response towards the other tested gases (C3H6, CO, H-2, NH3).
Place, publisher, year, edition, pages
2008. Vol. 6, no 4, 577-584 p.
Gold Nanoparticle, FET, XPS, Gas Sensor
IdentifiersURN: urn:nbn:se:liu:diva-16140DOI: 10.1166/sl.2008.433OAI: oai:DiVA.org:liu-16140DiVA: diva2:133228