Acetone Gas Sensing Properties of a Multiple-Networked Fe2O3-Functionalized CuO Nanorod Sensor. (5th November 2015)

• Record Type: Journal Article
• Authors: Park, Sunghoon; Kheel, Hyejoon; Sun, Gun-Joo; Ko, Taegyung; Lee, Wan In; Lee, Chongmu
• Other Names: Omri Abdelwahab Academic Editor.
• Is Part Of: Journal of nanomaterials. Volume 2015(2015)
• Publication Date: 2015-11-05
• Subjects: Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Nanomatériaux; Nanostructured materials; Nanotechnology; Nanostructures; Nanotechnology; Periodicals; Fulltext; Internet Resources; Periodicals; 620.115
• DOI: 10.1155/2015/830127
• Languages: English
• ISSNs: 1687-4110

Abstract

Abstract : Fe2 O3 -decorated CuO nanorods were prepared by Cu thermal oxidation followed by Fe2 O3 decoration via a solvothermal route. The acetone gas sensing properties of multiple-networked pristine and Fe2 O3 -decorated CuO nanorod sensors were examined. The optimal operating temperature of the sensors was found to be 240°C. The pristine and Fe2 O3 -decorated CuO nanorod sensors showed responses of 586 and 1, 090%, respectively, to 1, 000 ppm of acetone at 240°C. The Fe2 O3 -decorated CuO nanorod sensor also showed faster response and recovery than the latter sensor. The acetone gas sensing mechanism of the Fe2 O3 -decorated CuO nanorod sensor is discussed in detail. The origin of the enhanced sensing performance of the multiple-networked Fe2 O3 -decorated CuO nanorod sensor to acetone gas was explained by modulation of the potential barrier at the Fe2 O3 -CuO interface, highly catalytic activity of Fe2 O3 for acetone oxidation, and the creation of active adsorption sites by Fe2 O3 nanoparticles.