Polyvinylpyrrolidone/multiwall carbon nanotube composite based 36° YX LiTaO3 surface acoustic wave H2 gas sensor

Abstract

Poly-vinyl-pyrrolidone (PVP) is one of the actylene chemistry products founded by Prof Walter Reppe [1]. In most cases, PVP usually presents as an essential auxiliary, not an active substance itself [2]. Until recently, He et al. [3] has reported the application of PVP fibers as H2 gas sensor. Extending from the reported investigation, this work shows the gas sensing properties of PVP/MWNTs composite/36° YX LiTaO3 SAW device.