Sensitive NO sensor based CdS microparticles assembled by nanoparticles

Abstract

In this work, cadmium sulfide (CdS) microparticles are prepared via an ionothermal route. The structure of the as-synthesized CdS microparticles is investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). To investigate the sensing properties of the as-synthesized CdS microparticles, several gases are tested on the CdS sensor. The results show that the as-synthesized CdS microparticles have higher sensitivity towards NO than other gases (CH₄, CO, H₂, H₂S and SO₂), indicating good selectivity for detecting NO.