title: Sensitive and selective cataluminescence-based sensor system for acetone and diethyl ether determination.
abstract: A three-dimensional hierarchical CdO nanostructure with a novel bio-inspired morphology is reported. The field emission scanning electronic microscopy, transmission electron microscopy and X-ray diffractometer were employed to characterize the as-prepared samples. In gas-sensing measurements, acetone and diethyl ether were employed as target gases to investigate cataluminescence (CTL) sensing properties of the CdO nanostructure. The results show that the as-fabricated CdO nanostructure exhibited outstanding CTL properties such as stable intensity, high signal/noise values, short response and recovery time. The limit of detection of acetone and diethyl ether was ca. 6.5 ppm and 6.7 ppm, respectively, which was below the standard permitted concentrations. Additionally, a principal components analysis method was used to investigate the recognizable ability of the CTL sensor, and it was found that acetone and diethyl ether can be distinguished clearly. The performance of the bio-inspired CdO nanostructure-based sensor system suggested the promising application of the CdO nanostructure as a novel highly efficient CTL sensing material.
authors.affiliation: Qianjiang College, Hangzhou Normal University, Hangzhou, 310036, People's Republic of China; School of Aeronautics and Astronautics, Zhejiang University, Hangzhou, 310027, People's Republic of China.
authors.forename: Qihui
authors.initials: Q
authors.lastname: Wang
authors.forename: Bo
authors.initials: B
authors.lastname: Li
authors.forename: Yuhuai
authors.initials: Y
authors.lastname: Wang
authors.forename: Zhouxiang
authors.initials: Z
authors.lastname: Shou
authors.forename: Guolong
authors.initials: G
authors.lastname: Shi
mesh_terms: D000096:Acetone / Q000032:analysis*; D019187:Cadmium Compounds / Q000737:chemistry*; D004867:Equipment Design; D004986:Ether / Q000032:analysis*; D057230:Limit of Detection; D008163:Luminescent Measurements / Q000295:instrumentation / Q000379:methods*; D049329:Nanostructures / Q000737:chemistry*; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D025341:Principal Component Analysis; D012680:Sensitivity and Specificity; D059629:Signal-To-Noise Ratio; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: D019187:Cadmium Compounds; D010087:Oxides; D004986:Ether; C029663:cadmium oxide; D000096:Acetone
keywords: Diethyl ether; acetone; cataluminescence; diffusion; gas sensor