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<p>In the present study, Ba<sub>2</sub>SnO<sub>4</sub> nanostructures were synthesized via the hydrothermal method at 180&#xa0;°C for 24&#xa0;h, using 1&#xa0;M BaCl<sub>2</sub> as the barium source and varying concentrations of SnCl<sub>4</sub> (0.1, 0.3, 0.5, and 0.7&#xa0;M) as the tin precursor. Thick films of the resulting Ba<sub>2</sub>SnO<sub>4</sub> nanomaterials were fabricated using the screen printing technique. The corresponding film thicknesses obtained for each SnCl<sub>4</sub> concentration were approximately 65, 58, 53 and 47&#xa0;μm, respectively. The structural properties of Ba<sub>2</sub>SnO<sub>4</sub> were confirmed by X-Ray diffraction and the formation of nano Ba<sub>2</sub>SnO<sub>4</sub> where confirmed by transmission electron microscopy (TEM). The surface morphology and surface characteristics of fabricated material analyzed using scanning electron microscopy (SEM) while the energy dispersive spectroscopy analysis (EDS) shows the chemical composition of the prepared thick film. The fabricated thick films of various compositions were tested for different hazardous gases like Nitrogen dioxide (NO<sub>2</sub>), Ammonia (NH<sub>3</sub>), Hydrogen Sulphide (H<sub>2</sub>S), Ethanol (C<sub>2</sub>H<sub>6</sub>O), and Methanol (CH<sub>3</sub>OH). The thick film of Ba<sub>2</sub>SnO<sub>4</sub> thick film prepared at molar concentration Ba (1&#xa0;M): Sn (0.1&#xa0;M) (Sample 1) shows the maximum sensitivity 69.88% to NO<sub>2</sub> gas at an operating temperature of 200&#xa0;°C and concentration of 400&#xa0;ppm. The rapid response and recovery were recorded for Ba<sub>2</sub>SnO<sub>4</sub> thick film gas sensor.</p>

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Hydrothermally Synthesized Nano Ba2SnO4 Ternary Metal Oxide: A Promising Material for Enhanced NO2 Gas Sensing

  • 期刊论文

  • 发表日期：

    2025年9月16日

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  • Sagar H Mane,
  • Tushar S Wagh,
  • Swapnil S Shendge,
  • Amol B Rahane,
  • Gotan H Jain,
  • Madhavrao K Deore,
  • Ganesh J Mogal

摘要

In the present study, Ba2SnO4 nanostructures were synthesized via the hydrothermal method at 180 °C for 24 h, using 1 M BaCl2 as the barium source and varying concentrations of SnCl4 (0.1, 0.3, 0.5, and 0.7 M) as the tin precursor. Thick films of the resulting Ba2SnO4 nanomaterials were fabricated using the screen printing technique. The corresponding film thicknesses obtained for each SnCl4 concentration were approximately 65, 58, 53 and 47 μm, respectively. The structural properties of Ba2SnO4 were confirmed by X-Ray diffraction and the formation of nano Ba2SnO4 where confirmed by transmission electron microscopy (TEM). The surface morphology and surface characteristics of fabricated material analyzed using scanning electron microscopy (SEM) while the energy dispersive spectroscopy analysis (EDS) shows the chemical composition of the prepared thick film. The fabricated thick films of various compositions were tested for different hazardous gases like Nitrogen dioxide (NO2), Ammonia (NH3), Hydrogen Sulphide (H2S), Ethanol (C2H6O), and Methanol (CH3OH). The thick film of Ba2SnO4 thick film prepared at molar concentration Ba (1 M): Sn (0.1 M) (Sample 1) shows the maximum sensitivity 69.88% to NO2 gas at an operating temperature of 200 °C and concentration of 400 ppm. The rapid response and recovery were recorded for Ba2SnO4 thick film gas sensor.