Formaldehyde sensing characteristics of calcium-doped zinc oxide nanoparticles-based gas sensor

被引：52
作者：
Jaballah, S. [1 ]
Benamara, M. [1 ]
Dahman, H. [1 ]
Lahem, D. [2 ]
Debliquy, M. [3 ]
El Mir, L. [1 ]
机构：
[1] Gabes Univ, Fac Sci Gabes, Lab Phys Mat & Nanomat Appl Environm LaPhyMNE, Gabes 6072, Tunisia
[2] Mat Nova, Mat R&D Ctr, Parc Initialis,Ave Nicolas Copernic 1, B-7000 Mons, Belgium
[3] Univ Mons, Serv Sci Mat, Rue Epargne 56, B-7000 Mons, Belgium
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2020年 / 31卷 / 11期
关键词：
NITROGEN-DIOXIDE DETECTION; LIQUID PLASMA SPRAY; LUMINESCENCE PROPERTIES; ZNO NANOPARTICLES; TEMPERATURE; PERFORMANCE; FILMS; PHOTOLUMINESCENCE; MICROSTRUCTURE; OCTAHEDRONS;
D O I：
10.1007/s10854-020-03358-y
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Ca-doped ZnO (CZO) nanopowders were synthesized via a simple sol-gel method. The effects of calcium on the structural, morphological, and optical properties of the resultant powders were investigated. The XRD patterns showed that calcium has been incorporated into the ZnO lattice and the crystallites have nanometric size in the range of 50 nm. TEM observations depicted that crystallites possess spherical shape and confirm the nanometric size. UV-Vis-NIR characterization revealed an absorption band in the UV range with a decrease in optical band gap from 3.24 to 3.2 eV with increasing Ca concentration. Pure ZnO- and Ca-doped ZnO nanoparticles were used as active layer and tested for their sensing performance to formaldehyde. The most performed prepared sensor exhibits good formaldehyde sensing properties, including a high response of 5.28 (5 ppm, 250 degrees C) and low detection limit (<= 1 ppm).
引用
收藏
页码：8230 / 8239
页数：10
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