A Unique Bamboo Leaf-Like Nanostructure Based Gas Sensor and Its Potential Application in Indoor Formaldehyde Monitor

Abstract

Indoor air is significant for human health, and formaldehyde (HCHO) is deemed as the major pollutant in indoor environment. Therefore, the effective detection of HCHO has aroused widespread concern increasingly. In this work, a unique bamboo leaf-like sensing material assembled by nanorods was reported and investigated their potential application in HCHO sensing. It was found that the size of nanorod which was acted as the basic unit of the bamboo leaf-like architecture could be controlled via changing the synthesis temperature. The sensing results demonstrated that the bamboo leaf-like architectures with smaller nanorods in diameter exhibited better HCHO gas response which might be attributed to the smaller size and could offer more surface adsorption sites for HCHO and oxygen molecules.