Gas sensing properties of various morphologies of SnO2 prepared by using single and mixed ionic surfactant templates

In this research, we synthesized SnO2 with controllable morphologies as a function of concentration ratios of an ionic and cationic surfactant by hydrothermal method in order to study its morphology-dependent sensing properties. It was revealed by scanning electron microscope (SEM) and transmission electron microscopy (TEM) images that the morphology of SnO2 can be effectively controlled as, prism-like, mixture of nanoflower-like and prismlike, nanoflower-like, cubic-like and nanosheet-like. Among these morphologies, SnO2 nanoflower-like and mixture of nanoflower-like and prism-like sensors exhibited high sensor response for detecting CO and ethanol gas.

Keywords:

SnO2 , gas sensing , surfactant