title: Ultra-sensitive hydrazine chemical sensor based on high-aspect-ratio ZnO nanowires.
abstract: High-aspect-ratio ZnO nanowires based ultra-sensitive hydrazine amperometric sensor has been fabricated which showed a high and reproducible sensitivity of 12.76 microAcm(-2)nM(-1), detection limit, based on S/N ratio, 84.7 nM, response time less than 5s, linear range from 500 to 1200 nM and correlation coefficient of R=0.9989. This is the first report in which such a very high-sensitivity and low detection limit has been achieved for the hydrazine sensors by using ZnO nanostructures modified electrodes. Therefore, this work opens a way to utilize simply grown ZnO nanostructures as an efficient electron mediator to fabricate efficient hydrazine sensors.
authors.affiliation: BK21 Centre for Future Energy Materials and Devices and Nanomaterials Processing Research Centre, School of Semiconductor and Chemical Engineering, Chonbuk National University, Jeonju, South Korea. ahmadumar@chonbuk.ac.kr
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
mesh_terms: D002623:Chemistry Techniques, Analytical / Q000379:methods; D004563:Electrochemistry / Q000379:methods; D004566:Electrodes; D004583:Electrons; D006834:Hydrazines / Q000032:analysis* / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D049329:Nanostructures / Q000737:chemistry; D053770:Nanowires / Q000032:analysis*; D012680:Sensitivity and Specificity; D014961:X-Ray Diffraction; D015034:Zinc Oxide / Q000737:chemistry*
chemical_list: D006834:Hydrazines; C029424:hydrazine; D015034:Zinc Oxide