title: Novel Gas Sensor Based on ZnO Nanorod Circular Arrays for C2H5OH Gas Detection.
abstract: Novel side-heating gas sensor based on ZnO nanorod circular arrays was firstly fabricated by hydrothermal treatment assisted with a kind of simple dip-coating technique. The structure and morphologies of ZnO nanorods were characterized by X-ray diffraction (XRD), Scanning Electron Microscope (SEM), respectively. XRD result indicates that the obtained ZnO nanorods have good crystalline with the hexagonal wurtzite structure. SEM result indicates that ZnO nanorod arrays are vertically growth on the surface of ceramic tube of side-heating sensor with controlled diameter and length, narrow size distribution and high orientation. The gas sensing properties of ZnO nanorod circular arrays are also evaluated. Comparative to the sensor based on scattered ZnO nanorods responding to 25 ppm H2, CO, C6H5CH3 and C2H5OH gas, respectively, the sensing values of high orientation gas sensor are generally increased by 5%. This novel sensor has good application promising for the fabrication of cost effective and high performance gas sensors.
authors.forename: Zhang
authors.initials: Z
authors.lastname: Jianjiao
authors.forename: Yue
authors.initials: Y
authors.lastname: Hongyan
authors.forename: Guo
authors.initials: G
authors.lastname: Erjun
authors.forename: Zhang
authors.initials: Z
authors.lastname: Shaolin
authors.forename: Wang
authors.initials: W
authors.lastname: Liping
authors.forename: Zhang
authors.initials: Z
authors.lastname: Chunyu
authors.forename: Gao
authors.initials: G
authors.lastname: Xin
authors.forename: Chang
authors.initials: C
authors.lastname: Jing
authors.forename: Zhang
authors.initials: Z
authors.lastname: Hong
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D002516:Ceramics / Q000737:chemistry; D000431:Ethanol / Q000032:analysis* / Q000737:chemistry; D005740:Gases / Q000032:analysis* / Q000737:chemistry; D036103:Nanotechnology / Q000295:instrumentation*; D043942:Nanotubes / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D005740:Gases; D000431:Ethanol; D000537:Aluminum Oxide; D015034:Zinc Oxide