title: ZnO nanorods based hydrazine sensors.
abstract: Electrochemical sensor for the detection of hydrazine has been fabricated at the surface of gold electrode modified with ZnO nanorods. The ZnO nanorods were grown by non-catalytic simple thermal evaporation process by using metallic zinc powder in the presence of oxygen at low-temperature. The detailed structural studies revealed that the as-grown ZnO nanorods are well-crystalline with the wurtzite hexagonal phase and grown along the [0001] direction in preference. A good and reproducible sensitivity of 4.76 microA cm(-2) microM(-1) has been obtained from the fabricated hexagonal-shaped ZnO nanorods based electrochemical sensor. The response time of the fabricated sensor was less than 10 s with a linear range from 0.2 to 2.0 microM and correlation coefficient of R = 0.9914. The limit of detection (LOD), based on S/N ratio was estimated to be 2.2 microM.
authors.affiliation: School of Semiconductor and Chemical Engineering and BK21 Centre for Future Energy Materials and Devices, Nanomaterials Processing Research Centre, Chonbuk National University, Chonju 561-756, South Korea.
authors.forename: Ahmad
authors.initials: A
authors.lastname: Umar
authors.forename: M M
authors.initials: MM
authors.lastname: Rahman
authors.forename: Yoon-Bong
authors.initials: YB
authors.lastname: Hahn