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Abstract
A silver-loaded one-dimensional (1D) vertical ZnO nanowires (NWs) array synthesized by a facile seed mediated hydrothermal-RF magnetron sputtering method has been investigated for the fabrication of a highly stable and reproducible acetylene (C2H2) gas sensor. Successful immobilization of silver nanoparticles (NPs) as a sensitizer on the ZnO NWs array significantly enhanced the C2H2sensing properties and showed a stable sensing performance. The grown structure exhibited high response magnitude (30.8 at 1000[Formula: see text]ppm), short response time (43[Formula: see text]s) and excellent selectivity at 220[Formula: see text]C. The enhanced performance can probably be accounted for the effect of combining the highly orientated ZnO NWs and catalytically active silver-based network. The superior sensing features toward C2H2along with broad detection range (1–1000[Formula: see text]ppm), outstanding stability and excellent reproducibility indicate that the sensor is a promising candidate for practical applications.
Published Version
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