title: CuO Nanoparticles from the strongly hydrated ionic liquid precursor (ILP) tetrabutylammonium hydroxide: evaluation of the ethanol sensing activity.
abstract: The sensing potential of CuO nanoparticles synthesized via precipitation from a water/ionic liquid precursor (ILP) mixture was investigated. The particles have a moderate surface area of 66 m(2)/g after synthesis, which decreases upon thermal treatment to below 5 m(2)/g. Transmission electron microscopy confirms crystal growth upon annealing, likely due to sintering effects. The as-synthesized particles can be used for ethanol sensing. The respective sensors show fast response and recovery times of below 10 s and responses greater than 2.3 at 100 ppm of ethanol at 200 °C, which is higher than any CuO-based ethanol sensor described so far.
authors.affiliation: Institute of Chemistry, University of Potsdam, D-14476 Potsdam, Germany. ataubert@uni-potsdam.de
authors.forename: Andreas
authors.initials: A
authors.lastname: Taubert
authors.forename: Franziska
authors.initials: F
authors.lastname: Stange
authors.forename: Zhonghao
authors.initials: Z
authors.lastname: Li
authors.forename: Mathias
authors.initials: M
authors.lastname: Junginger
authors.forename: Christina
authors.initials: C
authors.lastname: Günter
authors.forename: Mike
authors.initials: M
authors.lastname: Neumann
authors.forename: Alwin
authors.initials: A
authors.lastname: Friedrich
mesh_terms: D003300:Copper / Q000737:chemistry*; D055664:Electrochemical Techniques; D000431:Ethanol / Q000032:analysis*; D052578:Ionic Liquids / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D013696:Temperature
chemical_list: D052578:Ionic Liquids; D000644:Quaternary Ammonium Compounds; D000431:Ethanol; D003300:Copper; C009405:tetrabutylammonium; C030973:cupric oxide