Acetylene Gas Sensing Properties of Silver Nanoparticles Decorated ZnO Morphologies with Reduced Graphene Oxide Hybrids

被引:0
作者
Uddin, A. S. M. Iftekhar [1 ]
Chung, Gwiy-Sang [1 ]
机构
[1] Univ Ulsan, Sch Elect Engn, 93 Daehak Ro, Ulsan 680749, South Korea
来源
2015 IEEE SENSORS | 2015年
关键词
ZnO morphology; silver; reduced graphene oxide; hybrid; acetylene sensor; NANOSTRUCTURES; TEMPERATURE; SENSOR; FILMS;
D O I
暂无
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
In the current work, in order to investigate the acetylene (C2H2) gas sensing behaviors of different ZnO morphologies; ZnO nanoparticles (NPs), hierarchical ZnO (Hrc), silver (Ag)-loaded ZnO NPs-reduced graphene oxide (Ag/ZnO NPs-rGO) hybrid and Ag-loaded ZnO Hrc-rGO (Ag/ZnO Hrc-rGO) hybrid were successfully synthesized via hydrothermal and chemical method. Addition of small amount of additives (Ag: 3 wt%; rGO: 12 wt%) with the pristine ZnO has boosted the sensing performance within the temperature range of 25-300 degrees C, in which Ag/ZnO NPs-rGO hybrid showed the best result among the tested samples. Low operating temperature (150 degrees C), high response magnitude (21.2 to 100 ppm gas concentration) and fast response/recovery time (25/80 sec) of the Ag/ZnO NPs-rGO hybrid might be attributed to the specific surface area, crystalline quality, surface defects and uniformity of the ZnO NPs, and the active catalytic effect of Ag and rGO with ZnO NPs in the hybrid.
引用
收藏
页码:166 / 169
页数:4
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