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Abstract <p>Tin oxide (SnO<sub>2</sub>) quantum dots were synthesized via a thermal quenching method and evaluated for methanol vapor sensing. Characterization confirmed their nanoscale size (~10–12 nm). The sensor exhibited high sensitivity, rapid response, and recovery, with optimal performance at 250°C. Enhanced surface area and efficient charge transfer mechanisms enabled effective detection across various methanol concentrations. These results demonstrate that SnO<sub>2</sub> quantum dots are promising candidates for fast, reliable, and low-cost methanol gas sensing applications.</p>

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SnO2 Quantum Dots as Methanol Sensor

  • 期刊论文

  • 发表日期：

    2026年2月16日

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  • Abhigyan Ganguly,
  • Sandipan Biswas,
  • Nitai Paitya,
  • Siddhartha S. Nath

摘要

Abstract

Tin oxide (SnO2) quantum dots were synthesized via a thermal quenching method and evaluated for methanol vapor sensing. Characterization confirmed their nanoscale size (~10–12 nm). The sensor exhibited high sensitivity, rapid response, and recovery, with optimal performance at 250°C. Enhanced surface area and efficient charge transfer mechanisms enabled effective detection across various methanol concentrations. These results demonstrate that SnO2 quantum dots are promising candidates for fast, reliable, and low-cost methanol gas sensing applications.