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Aerosol-assisted Chemical Vapor Deposition of Metal Oxide Structures: Zinc Oxide Rods
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Chemiresistive Effect in Ti0.2V1.8C MXene/Metal Oxide Hetero-Structured Composites
Ilia A Plugin1, Nikolay P Simonenko2, Elizaveta P Simonenko2
1Department of Physics, Yuri Gagarin State Technical University of Saratov, 77 Polytechnicheskaya Str., 410054 Saratov, Russia.
Sensors (Basel, Switzerland)
|January 28, 2026
Summary
This study demonstrates that novel MXene-based gas sensors, specifically Ti0.2V1.8C composites with SnO2 and Co3O4, can effectively detect alcohol and ammonia vapors. The developed sensor array achieved selective vapor identification, highlighting MXene potential for electronic noses.
Area of Science:
- Materials Science
- Nanotechnology
- Chemical Sensing
Background:
- Two-dimensional carbide crystals (MXenes) are promising for gas sensors due to energy efficiency and tunable selectivity.
- Hetero-structured composites with metal oxides enhance MXene performance.
- Developing selective and efficient gas sensors is crucial for environmental monitoring and safety.
Purpose of the Study:
- To investigate the chemiresistive sensing properties of a double-metal MXene (Ti0.2V1.8C) and its composites.
- To evaluate the feasibility of these materials for detecting alcohol and ammonia vapors.
- To demonstrate the potential for MXene-based materials in integrated electronic nose applications.
Main Methods:
- Synthesis and characterization of Ti0.2V1.8C MXene and its composites with SnO2 and Co3O4 using thermal analysis, XRD, Raman spectroscopy, and electron microscopy.
- Fabrication of gas sensors using composite layers on multi-electrode substrates.
- Gas-sensing experiments conducted with alcohol and ammonia vapor probes at concentrations of 200-2000 ppm and an operating temperature of 370 °C.
Main Results:
- The developed sensor array exhibited distinct responses to different analytes, enabling clear analyte discrimination.
- Selective identification of alcohol and ammonia vapors was achieved using linear discriminant analysis.
- The composite materials showed promising gas-sensing performance.
Conclusions:
- MXene-based hetero-structured composites show significant potential for developing advanced gas sensors.
- The ability to selectively identify vapors using these materials supports their application in integrated electronic nose systems.
- Further research into MXene composites can lead to improved gas sensing technologies.
Keywords:
Co3O4MXeneSnO2V2O5chemiresistorgas sensormetal oxidemultisensor arraynanocompositesynthesisMore Related Videos
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