ABSTRACT
This chapter describes a gas sensor for detection of Volatile Organic Compounds (VOCs) gas using Au-Polypyrrole (PPy) nanorods based on Localized Surface Plasmon Resonance (LSPR). It discusses the well-fabricated Au-PPy nanorods by scanning electron microscopy and the VOCs gas-sensing system performed under toluene gas. The chapter explores a gas sensor for detection of VOCs gas based on LSPR using Au-PPy nanorods. One of the representatives conducting polymers is polypyrrole which includes -NH groups and -conjugations that react VOCs gas molecules. VOCs gas, which has a high vapor pressure at room temperature, can induce health problems and environmental risks. VOCs gas is generated in industrial environments such as solvents, paints, glues, and other products. The vertically Au-PP2y nanorods array was fixed on a glass and prepared for the detection of VOCs gas. The gas detection system consists of whitelight source, a reflectance optical probe, gas reaction chamber, a spectrometer, analysis software and Au-PPy nanorods.
