Title: Maize straw-templated hierarchical porous ZnO:Ni with enhanced acetone gas sensing properties
Abstract: Novel maize straw- templated hierarchical porous Ni doped ZnO (STHPS ZnO:Ni) was synthesized by a simple and cost-effective biotemplate method. The structure and morphology of the samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and N2 adsorption–desorption analyses. The results reveal that the as-prepared ZnO:Ni retained the original pore morphology of the maize straw material, and the framework was composed of a large amount of nanoparticles which were nonuniform in size and shape. The gas sensing tests reveal that STHPS ZnO:Ni gas sensors exhibited enhanced gas sensing performance to acetone. The responses of STHPS ZnO:Ni gas sensors to 100 ppm acetone operated at 340 °C were 68 and the response and recovery times were about 6 s and 2s. The detection limit was estimated to be 116 ppb.
Publication Year: 2017
Publication Date: 2017-05-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 67
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