Enhancing sensitivity and selectivity in gas sensors: A novel approach using metal oxide-conducting polymer composites

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR Inorganic Chemistry Communications Pub Date : 2025-02-01 DOI:10.1016/j.inoche.2024.113726

A. Al Ojeery , M.A. Farea

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Abstract

The growing need for effective gas detection technologies has led to significant advancements in the development of gas sensors. This study introduces a novel Poly(o-toluidine) (POT)/Titanium dioxide (TiO₂) nanocomposite sensor for sulfur dioxide (SO₂) detection, demonstrating remarkable improvements in sensitivity, selectivity, and response/recovery times. The POT/TiO₂ nanocomposite sensor exhibits a threefold enhancement in sensitivity compared to pure POT, achieving a response of 186 at 50 ppm SO₂ at room temperature, a significant improvement over previous high-temperature-based SO₂ sensors. Additionally, the sensor demonstrates excellent repeatability and stability over 35 days, making it a promising candidate for industrial and environmental monitoring. The synergistic interaction between POT and TiO₂ enhances charge transfer and gas adsorption, resulting in faster and more reliable SO₂ detection and presenting an innovative solution for practical gas sensing applications.

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来源期刊

Inorganic Chemistry Communications 化学-无机化学与核化学

CiteScore

5.50

自引率

7.90%

发文量

1013

审稿时长

53 days

期刊介绍： Launched in January 1998, Inorganic Chemistry Communications is an international journal dedicated to the rapid publication of short communications in the major areas of inorganic, organometallic and supramolecular chemistry. Topics include synthetic and reaction chemistry, kinetics and mechanisms of reactions, bioinorganic chemistry, photochemistry and the use of metal and organometallic compounds in stoichiometric and catalytic synthesis or organic compounds.