Palladium Phthalocyanine Nanowire-Based Highly Sensitive Sensors for NO2(g) Detection

Palladium phthalocyanine (PdPc) nanowires (NWs) were developed to achieve the gas sensing of NO2 in the sub-parts-per-million (ppm) range. Non-substituted metal phthalocyanine are well known for their p-type semiconducting behavior, which is responsible for its gas-sensing capabilities. Nanofabricat...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2024-03, Vol.24 (6), p.1819
Main Authors: Otero Vélez, Crystal, Flores, Soraya Y., Fonseca, Luis F., Piñero Cruz, Dalice M.
Format: Article
Language:English
Subjects:
chemiresistors
gas sensors
Gases
Hydrogen
Nanomaterials
Nanowires
Nitrogen dioxide
Palladium
palladium phthalocyanine
Sensors
Spectrum analysis
Temperature
Thin films
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Summary:Palladium phthalocyanine (PdPc) nanowires (NWs) were developed to achieve the gas sensing of NO2 in the sub-parts-per-million (ppm) range. Non-substituted metal phthalocyanine are well known for their p-type semiconducting behavior, which is responsible for its gas-sensing capabilities. Nanofabrication of the PdPc NWs was performed by physical vapor deposition (PVD) on an interdigitated gold electrode (IDE). The coordination of palladium in the structure was confirmed with UV–Vis spectroscopy. Gas-sensing experiments for NO2 detection were undertaken at different sensed gas concentrations from 4 ppm to 0.5 ppm at room temperature. In this work, the responses at different gas concentrations are reported. In addition, structural studies of the PdPc NWs with scanning electron microscopy (SEM) and electron-dispersive X-ray diffraction (EDS) are shown.
ISSN:1424-8220
1424-8220
DOI:10.3390/s24061819