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Camphor Sulfonic Acid Doped Polyaniline/Diamond Nanofibers Based ZnO/64° YX LiNbO3 Surface Acoustic Wave H2 GasSensor

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Abstract:

In this work, the novel H2 gas sensor based on polyaniline/diamond composite nanofibers thin film deposited on a ZnO/64° LiNbO3 surface acoustic wave (SAW) transducer has been developed. The film was deposited using drop-casting method. The morphology of the composite was characterised using Scanning Electron Microscopy (SEM) and X-Ray Diffraction (XRD). It was observed that the nanofibers have average diameter of 50 nm and broad peaks were observed at 2 ∼ 16° and 44° in the X-ray diffraction pattern. The sensor dynamic and static performance were presented. A response of more than 750 kHz towards 1% of H2 gas was measured and fast response and recovery of 12 s and 180 s, respectively were observed.

Keywords: H2 SENSOR; POLYANILINE/DIAMOND COMPOSITE; SAW

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/sl.2008.537

Publication date: December 1, 2008

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