Deposition and characterization of poly(o-anisidine)/TiO2Nanocomposite for gas sensing application
DOI:
https://doi.org/10.37628/ijpse.v1i1-2.91Abstract
The Poly(o-anisidine) (POA) and Titanium dioxide POA (POA/TiO2 ) composite thin film based for gas sensing application are synthesized. Pure POA and POA/TiO2 composites with 20wt% of TiO2 were synthesized by chemical oxidative polymerization of o-anisidine using ammonium persulfate in acidic medium at 0-50C. Thin films of POA and POA/TiO2 composites were deposited on glass plate by dip coating method to prepare the chemiresistor sensor. The structural and optical properties of these composite films have been characterized by UV-Visible (UV-Vis) spectroscopy, scanning electron microscopy (SEM) and FTIR spectroscopy. Finally, the response of these chemiresistor sensors for NH3 gas was evaluated by monitoring the change in electrical resistance at room temperature. It was observed that the POA/TiO2 composite thin film based chemiresistor sensors show a higher response as compared to pure POA sensor.References
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