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<p>We report a study on the preparation of Pt–rGO–SnO<sub>2</sub>–PPy quaternary nanocomposites, demonstrating that their synergistic combination enhances structural, morphological, and sensor properties. The prepared nanocomposites were investigated using XRD, Raman spectroscopy, and FTIR spectroscopy, and found that the quaternary nanocomposite was stable and had tetragonal SnO<sub>2</sub> and semicrystalline PPy phases. The AFM study showed that the 3D globular structure increased the surface roughness, thus optimizing it for gas adsorption. The study showed that the nanocomposite had functional thermal stability and Ohmic behavior with tuned resistance. The Pt-RSP thin film showed maximum performance in acetone vapor detection and had a fast response and recovery time of 18 and 39s at room temperature and 9 and 19s at 150&#xa0;°C. The thin film had high sensitivity, detecting even 2&#xa0;ppm of acetone, was optically transparent, and demonstrated 12-cycle repeatability, making it superior and cost-effective for various technological sensing device applications.</p>

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Development of Pt-decorated rGO/SnO2/PPy quaternary hybrids for rapid and highly sensitive acetone detection

  • 期刊论文

  • 发表日期：

    2026年7月20日

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  • R. Triveni,
  • Manikandan Dhamodaran,
  • V. Janardhanam,
  • Y. Srilatha,
  • Vijaya Kumar Kambila

摘要

We report a study on the preparation of Pt–rGO–SnO2–PPy quaternary nanocomposites, demonstrating that their synergistic combination enhances structural, morphological, and sensor properties. The prepared nanocomposites were investigated using XRD, Raman spectroscopy, and FTIR spectroscopy, and found that the quaternary nanocomposite was stable and had tetragonal SnO2 and semicrystalline PPy phases. The AFM study showed that the 3D globular structure increased the surface roughness, thus optimizing it for gas adsorption. The study showed that the nanocomposite had functional thermal stability and Ohmic behavior with tuned resistance. The Pt-RSP thin film showed maximum performance in acetone vapor detection and had a fast response and recovery time of 18 and 39s at room temperature and 9 and 19s at 150 °C. The thin film had high sensitivity, detecting even 2 ppm of acetone, was optically transparent, and demonstrated 12-cycle repeatability, making it superior and cost-effective for various technological sensing device applications.