Investigation on isopropanol sensing properties of LnFeO(3)(Ln = Nd, Dy, Er) perovskite materials synthesized by microwave-assisted hydrothermal method

The early detection of lung cancer by breath analysis has attracted more and more attention. In this work, highperformance LnFeO3 (Ln = Nd, Dy, Er) based isopropanol sensors were synthesized by microwave-assisted hydrothermal method. X-ray diffraction, field-emission scanning electron microscope, transmission electron microscope, and UV-visible-near infrared absorption spectrometer were used to analyze the material phase composition, microstructure, and other physical properties. The sensing performance was tested by using a fourchannel gas testing chamber. The sensors were tested with low concentrations of isopropanol at high humidity to simulate a real human exhaled breath environment. The low binding energy of the Ln-O bond makes it easy to have chemical reactions, which leads to excellent isopropanol sensing performance. Finally, the gas sensing mechanism of the LnFeO3 sensor was discussed.

Automated summary

The early detection of lung cancer by breath analysis has attracted increasing attention. In this study, high-performance LnFeO3-based sensors were synthesized and tested for their sensing performance in simulating a real human exhaled breath environment. The gas sensing mechanism of the LnFeO3 sensor was also discussed.