Gas Sensor Based on Zn₂SnO₄/SnO₂ Nanocubes for Rapid N-Propanol Detection
Yudong Li, Zhenyu Yuan, Fanli Meng, Yanbai Shen, Chaoyang Xing
Abstract
N-propanol has multiple potentially hazardous properties such as explosive, toxic, and flammable. Due to the critical application of n-propanol in industrial solvents, a reliable and stable chemical sensor is needed to detect n-propanol effectively. This paper reports a gas sensor based on Zn <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> SnO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> /SnO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> prepared by a simple co-precipitation method for n-propanol detection. Electrical test results show that the gas sensor designed in this paper achieves rapid detection of n-propanol with a lower detection limit of up to 0.5 ppm and outstanding stability. The performance improvement may be attributed to the fact that Zn <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> SnO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> as a promoter and framework effectively enhances the gas-sensitive performance of SnO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> for alcohols and achieves further segmentation of alcohol detection.