A Gas Sensor with Enhanced Sensing Properties towards Butyl Acetate: Vascular Bundle Structure Zn₂SnO₄ Derived from Maize Straw

Abstract

The development of butyl acetate sensors with high sensitivity and selectivity has been highly desirable for its harmful effects on human health. In this work, we developed a high‐performance butyl acetate sensor based on vascular bundle structure Zn2SnO4 nanomaterial derived from maize straw. The vascular bundle structure Zn2SnO4 with higher specific surface area obtained by calcination to remove the maize straw template, plays the dual role of accelerating the diffusion of gas molecules and providing more active sites. Our research showed that the sensor had a response of 18 to 100 ppm butyl acetate at a working temperature of 250 °C, with a fast response recovery rate (18 s/25 s), which showed significant improvement compared to the Zn2SnO4 sensor prepared without templates. The improved performance can be attributed to the cross‐linked nanoparticle chains and gas collision mechanism of the sensor. These findings highlight the potential of our sensor for the detection of butyl acetate gas.

Room Temperature NH3 Selective Gas Sensors Based on Double-Shell Hierarchical SnO2@polyaniline Composites

“…Gas-sensitive reaction processes primarily involve the activation of oxygen species and the adsorption–desorption processes of the target gas [ 23 ]. Specifically, this encompasses the diffusion of gas to the surface of the sensing material, collision and adsorption on the material surface, electron transfer between the adsorbed target gas and adsorbed oxygen, and the subsequent desorption processes [ 24 , 25 , 26 , 27 ]. The dual-shell hollow sphere structure possesses unique spatial effects, capable of altering the gas diffusion path and increasing the collision frequency, thereby enhancing the gas-sensing performance [ 28 , 29 ].…”