Published October 2011 | Version v1
Journal article Metadata-only

Fabrication of H2 Gas Sensor Based on ZnO Nanarod Arrays by a Sonochemical Method

Creators

  • 1. Kyungpook National University, Daegu (Korea, Republic of)

Description

We report a simple method for fabricating ZnO gas sensors via a sonochemical route and their H2 gas sensing properties. Vertically aligned ZnO nanorod arrays as a sensing material were synthesized on a Pt-electrode patterned alumina substrate under ambient conditions. The advantage of the proposed method is a high speed of processing. The gas sensor based on ZnO nanorod arrays with large specific surface area showed a high response to H2 and a detection limit of 70 ppm at 250 .deg. C. Also, their response and recovery time were relatively short and a complete regeneration was observed. A mechanism for sensing H2 gas on the surface of ZnO nanorods is proposed

Additional details

Publishing Information

Journal Title
Bulletin of the Korean Chemical Society
Journal Volume
32
Journal Issue
10
Series
17 refs, 4 figs
Journal Page Range
p. 3735-3737
ISSN
0253-2964

INIS

Country of Publication
Korea, Republic of
Country of Input or Organization
Korea, Republic of
INIS RN
50081374
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
DETECTION; FABRICATION; HYDROGEN; NANOSTRUCTURES; SENSORS; SURFACES; ZINC OXIDES
Descriptors DEC
CHALCOGENIDES; ELEMENTS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; ZINC COMPOUNDS