期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 905, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2022.164229
关键词
SnO2 nanospheres; AVO; Gas sensor; Ethanol; Sensitivity
资金
- Science and Technology Planning Project of Shenzhen [JSGG20191129102808151]
- NSAF [U1930205]
- Key Research and Development Projects of Shaanxi Province [2019GY-121, 2020GY-137]
- Fundamental Research Funds for the Central Universities [xzd012019020]
- Program for Innovation Team of Shaanxi Province [2021TD-23]
- International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies
A facile acid vapor oxidation method has been developed for the synthesis of highly round SnO2 nanospheres from metal Sn thin films. The as-obtained nanospheres exhibit ultrahigh sensitivity to ethanol gas, making them promising candidates for high performance chemical sensors.
A facile acid vapor oxidation (AVO) method has been developed to grow highly round SnO2 nanospheres from 400 nm metal Sn thin films. This synthesis approach is able to directly grow nanostructures from a substrate in a simple reaction system involving the reaction of Sn film with the vapor generated from a hydrochloric acid solution in a Teflon-lined autoclave. A possible growth mechanism for the interesting SnO2 nanospheres has been proposed based on a series of time-dependent experiments. As-prepared SnO2 nanospheres have diameters around 150 nm. The influence of reacting time on the gas sensing properties of SnO2 was investigated by the detection of ethanol gas. The as-obtained SnO2 nanospheres are ultrasensitive to ethanol with a response of 1.49-50 ppb of ethanol at the low optimal working temperature of 170 degrees C, which shows the promising candidates for high performance chemical sensors. This work offers a facile, shape-controlled, and efficient route to synthesize complex SnO2 nanospheres for gas detection with high performance, including ultrahigh sensitivity, good selectivity, and reversibility. (C) 2022 Elsevier B.V. All rights reserved.
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