Abstract

Fe3O4/gamma-Fe2O3 nanoparticles (NPs) based thin films were used as active layers in solid state resistive chemical sensors. NPs were synthesized by high temperature solution phase reaction. Sensing NP monolayers (ML) were deposited by Langmuir-Blodgett (LB) techniques onto chemoresistive transduction platforms. The sensing ML were UV treated to remove NP insulating capping. Sensors surface was characterized by scanning electron microscopy (SEM). Systematic gas sensing tests in controlled atmosphere were carried out toward NO2, CO, and acetone at different concentrations and working temperatures of the sensing layers. The best sensing performance results were obtained for sensors with higher NPs coverage (10 ML), mainly for NO2 gas showing interesting selectivity toward nitrogen oxides. Electrical properties and conduction mechanisms are discussed.

Autore Pugliese

• Taurino Antonietta , Manera Maria Grazia , Siciliano Pietro Aleardo , Rella Roberto , Capone Simonetta

Tutti gli autori

• Capone S.; Manera M. G.; Taurino A.; Siciliano P.; Rella R.; Luby S.; Benkovicova M.; Siffalovic P.; Majkova E.

Titolo volume/Rivista

Langmuir

Anno di pubblicazione

2014

ISSN

0743-7463

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

Non Disponibile