A Novel Sensor Apply in Detection of Indoor Air

Abstract

Rutile TiO2 with three dimensional structures displays excellent electrical and chemical properties. In this article, rutile TiO2 nanostructure with flower-like morphology is synthesized via a hydrothermal method without any catalyst, template, surfactant or calcination. Additionally, the effects of the reactants are discussed on the basis of controlled experiment. Interestingly, we found that the rutile TiO2 sensor show excellent gas sensing performances toward VOCs gas, primarily attributed to abundant gas diffusion channels and large gas-sensitive reaction surface area. Meanwhile, these building units promote the directional transmission of electrons, resulting in an improvement of TiO2 gas sensing characteristics.