期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 348, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2021.130684
关键词
ZIF-8; ZIF-67; Porous structure; n-p heterojunction; Ethanol sensor
资金
- Vietnam National University, Ho Chi Minh City [TX2021-50-01]
The nano-heterojunctions of n-ZnO/p-Co3O4, synthesized with varying molar ratios of Co3O4 from zeolitic imidazolate frameworks (ZIF-8/ZIF-67), exhibited excellent ethanol-sensing performance due to high-porosity sensing materials, formation of p-n heterojunction at interfaces, catalytic ability of Co3O4, and high crystallinity of the ZnO phase.
Nano-heterojunctions of n-ZnO/p-Co3O4 with varying molar ratios of Co3O4 derived from a zeolitic imidazolate framework (ZIF-8/ZIF-67) were efficiently synthesized and well-characterized. The heterojunction-based gas sensors were then used for sensing various gases, including ethanol. Owing in part to the ZIF-8/ZIF-67 structure, the calcined n-ZnO/p-Co3O4 with 30 mol% Co3O4 was the best sensor, in-terms of high response, outstanding selectivity, and good repeatability for low concentrations of ethanol at 300 degrees C. According to detailed analysis, the high ethanol-sensing performance of the n-ZnO/p-Co3O4 nanocomposite could be attributed to the high-porosity of sensing materials, formation of p-n heterojunction at interfaces, the catalytic ability of Co3O4, and the high crystallinity of the ZnO phase in the nano-heterojunctions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据