Tb2O3/SnO2 composite nanofibers by electrospinning for enhanced acetone sensing performance
Year: 2026
Type: article
Abstract: Gas-sensing performance can be markedly enhanced by constructing metal-oxide semiconductor nanocomposites. In this study, Tb 2 O 3 /SnO 2 composite nanofibers with varying Tb 2 O 3 concentrations were synthesized via a straightforward electrospinning method followed by annealing. The heterostructure of Tb 2 O 3 /SnO 2 composite nanofibers was thoroughly characterized using techniques such as XRD, SEM, TEM, UV-Vis, and XPS. Gas-sensing properties were evaluated using a static gas testing system. The results demonstrate that the sensor with 1 mol% Tb exhibits excellent acetone sensing performance at 320 °C, showing a response value of 63.7–100 ppm acetone—two times higher than that of pure SnO 2 sensors. Moreover, it maintains a response level under high humidity comparable to that of pure SnO 2 under low humidity, although all sensors show a noticeable decrease in performance under elevated humidity. The sensor also exhibits good selectivity and a sub-ppm detection limit of 0.2 ppm, highlighting its potential for non-invasive diabetes monitoring through exhaled-breath analysis.
Source: Sensors and Actuators B Chemical
Authors: Yu Shu, Jiang Haotian, Zhang Jie, Li Wei
Institution: Taiyuan University of Technology
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $5,010
OpenAlex ID: W7133988236