期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 340, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2021.129940
关键词
SnO; Hollow frames; NO2; Sensors; Materials science
资金
- Hundred Talents plan of Shaanxi Province
- National Natural Science Foundation of China [61974120]
- National Key Research and Development Plan [2019YFC1520900]
- Key Program for International Science and Technology Cooperation Projects of Shaanxi Province [2018KWZ-08]
- General Program for International Science and Technology Cooperation Projects of Shaanxi Province [2019KW-029]
- Science and Technology Planning Project of Xi'an City [2019218214GXRC018CG019GXYD18.6]
Tin monoxide (SnO) microstructures with novel hollow frame morphologies were successfully synthesized using a solvothermal method. These structures showed excellent gas-sensing performances with low detection limits and short response/recovery time for NO2, demonstrating promising potential for gas sensors applications.
In this work, tin monoxide (SnO) is synthesized successfully using a simple solvothermal method. SnCl2 as a stannous source in the presence of oleylamine (OLA), by changing the amount of NH3 center dot H2O, we prepare a series of SnO microstructures with novel and unique hollow frame morphologies, such as convex corner quadrilateral-, square- and octagonal-like structures. Meanwhile, these hollow structures are attributed to Ostwald Ripening process and the joint action of OH and NH4+. In addition, these obtained hollow frame-like SnO nanostructures show excellent gas-sensing performances, including low detection limits, short response/recovery time, selectivity to NO2 and good reproducibility. The minimum detection limit (MDL) of the sensor devices is 5 ppb at 200 C. In addition, at a wide NO2 concentrations detection range (e.g. 5 ppb-10 ppm), both the response and recovery time are within 60 s. The NO2 gas sensor device still remains excellent performance after being stored over 3 months. All these advantages demonstrate a promising means of using frame-like and hollow SnO microstructures for NO2 gas sensors application.
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