Metal oxides are wonderful choices as base matters in emerging technologies engaged of Gas Sensors. In this work, an effort is created to prepare the ZnO and polypyrrole composite thin film utilizing sol-coagulate technique. Nanocomposite thins film was prepared utilizing spin coating on mirror substrates for ammonia vapor sensing. ZnO and polypyrrole sols were prepared utilizing sol-coagulate technique and thin films were adapted by using spin coater. The nanocomposite thin films were inclined by varying the percentage arrangement of ZnO and Polypyrrole. Structural, optical and semantic properties of the adapted films were done using XRD, UV-Visible and SEM studies. The films were alone prepared on Inter-Digital Transducers for vapor sensing requests. Gas sensing answer characteristics of the prepared sensor were acted using workshop. The sensing reaction of the prepared films is observed and erect to be maximum (~33) for the 70%PPy+30%ZnO film at a comparatively low operating hotness of about 150 °C. The prepared film is also proven by optical vapor sensing method i.e., Surface Plasmon Resonance (SPR). SPR vapor sensor works on the principle of record the change in refractive index of the sensing coating (70%PPy+30%ZnO) on exposure to aim ammonia gas.
Author(s) Details:
Ajay Pratap Singh Gahlot,
Department of Physics, Deshbandhu College,
University of Delhi, India.
Please see the link here: https://stm.bookpi.org/FRAPS-V4/article/view/10586
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