Ultrasensitive and selective C2H5OH sensors using Rh-loaded In2O3 hollow spheres

Cited 90 time in webofscience Cited 0 time in scopus
  • Hit : 892
  • Download : 0
Rh-loaded In2O3 hollow spheres with diameters of similar to 2 mm were prepared by a one-pot hydrothermal reaction of aqueous solution containing indium nitrate, rhodium chloride, and glucose and subsequent heat treatment at 500 degrees C for 2 h. The response to 100 ppm C2H5OH (R-a/R-g, R-a: resistance in air, R-g: resistance in gas) of 1.67 at% Rh-loaded In2O3 hollow spheres was 4748, which was similar to 180 times higher than that of pure In2O3 hollow spheres. Rh loading decreased the temperature for maximum gas response from 475 degrees C to 371 degrees C, which also enhanced the selectivity to C2H5OH 15.1-24.7 times and recovery speed. The ultrahigh sensitivity and selectivity to C2H5OH, the lower sensing temperature, and the reduced recovery time were attributed to electronic interactions between Rh and In2O3 and the promotion of catalytic dissociation of C2H5OH into reactive gases.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2011
Language
English
Article Type
Article
Keywords

GAS-SENSING PROPERTIES; CORUNDUM-TYPE IN2O3; HIGH-SENSITIVITY; DOPED IN2O3; OXIDE NANOPARTICLES; THICK-FILMS; ETHANOL; NANOWIRES; METAL; NANOFIBERS

Citation

JOURNAL OF MATERIALS CHEMISTRY, v.21, no.46, pp.18560 - 18567

ISSN
0959-9428
URI
http://hdl.handle.net/10203/95747
Appears in Collection
MS-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 90 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0