journal article·2025-12-01Open access

Fabrication of MGO: SNO2 nanoparticles for environmental gas sensing applications

Department of Physics, College of Science, University of Diyala, Iraq, A. A. Kamil, R. M. Abdullah, Department of Physics, College of Science, University of Diyala, Iraq, R. Sedeeq, Department of Physics, College of Science, University of Diyala, Iraq, L. F. Hassan, Department of Physics, College of Science, University of Diyala, Iraq, J. Al-Khalidi, Department of Physics, College of Science, University of Diyala, Iraq, W. H. Albanda, Science Department - College of Basic Education, Mustansiriyah University, Iraq

Abstract

The structures proprieties were investigated through X-ray diffraction. The tin oxide has a constant tetragonal structure with mixing MgO, while, the grain size decreases from (35.42 nm) to (14.11 nm); FE-SEM reveals the shape and dimensions of the sample. Hall Effect measurement identifies the n-type electrical conductivity for the MgO, SnO2, and MgO: SnO2 films, the mobility of carriers decreases when the mixing ratio increase. The sensor structures for MgO, SnO2, and MgO: SnO2 have a high resistance in air to NH3 and CO2 gas; the maximum ∼22 sensor response at room temperature showed about 868.48 ppm of NH3 gas for MgO: SnO2 nanoparticles, with a fast response time of 25 s. However, the recovery time values were consistently higher than the response time values
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Research context

OpenAlex topics: Gas Sensing Nanomaterials and Sensors · ZnO doping and properties · Magnesium Oxide Properties and Applications

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