Boosting Gaseous Acetone Detection by Nanoheterojunctions of p-Type MWCNTs/PANI Integrated into 3D Flame-Synthesized n-Type ZnO DOI
Eleonora Pargoletti, Alberto Vertova, Antonio Tricoli

et al.

ACS Sensors, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 5, 2025

Accurate methods for detecting volatile organic compounds (VOCs) are essential noninvasive disease diagnosis, with breath analysis providing a simpler, user-friendly alternative to traditional diagnostic tools. However, challenges remain in low-temperature VOC solid-state sensors, especially concerning their selectivity and functionality at room temperature. Herein, we present key insights into optimizing multiwalled carbon nanotubes (MWCNTs)/polyaniline (PANI) ZnO nanocomposites efficient, light-free selective acetone sensing. We showcased novel prepared by integrating p-type MWCNTs/PANI porous 3D network of n-type nanoparticles, synthesized via flame spray pyrolysis, varying the weight ratios between (namely 1:1, 8:1, 32:1, 64:1). The 32:1 nanocomposite exhibited superior over toluene ethanol, resulting promise even As such, potential sensing mechanism was proposed, which involves nanoheterojunction formation ZnO, creating an accumulation layer that enhances gas response. Moreover, incorporation MWCNTs improved overall conductivity carrier mobility. Hence, believe this work offers valuable low-temperature, sensors.

Language: Английский

Boosting Gaseous Acetone Detection by Nanoheterojunctions of p-Type MWCNTs/PANI Integrated into 3D Flame-Synthesized n-Type ZnO DOI
Eleonora Pargoletti, Alberto Vertova, Antonio Tricoli

et al.

ACS Sensors, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 5, 2025

Accurate methods for detecting volatile organic compounds (VOCs) are essential noninvasive disease diagnosis, with breath analysis providing a simpler, user-friendly alternative to traditional diagnostic tools. However, challenges remain in low-temperature VOC solid-state sensors, especially concerning their selectivity and functionality at room temperature. Herein, we present key insights into optimizing multiwalled carbon nanotubes (MWCNTs)/polyaniline (PANI) ZnO nanocomposites efficient, light-free selective acetone sensing. We showcased novel prepared by integrating p-type MWCNTs/PANI porous 3D network of n-type nanoparticles, synthesized via flame spray pyrolysis, varying the weight ratios between (namely 1:1, 8:1, 32:1, 64:1). The 32:1 nanocomposite exhibited superior over toluene ethanol, resulting promise even As such, potential sensing mechanism was proposed, which involves nanoheterojunction formation ZnO, creating an accumulation layer that enhances gas response. Moreover, incorporation MWCNTs improved overall conductivity carrier mobility. Hence, believe this work offers valuable low-temperature, sensors.

Language: Английский

Citations

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