Ricciardella, Filiberto (2015) From graphene to graphene-based gas sensors operating in environmental conditions. [Tesi di dottorato]

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Item Type: Tesi di dottorato
Lingua: English
Title: From graphene to graphene-based gas sensors operating in environmental conditions
Creators:
CreatorsEmail
Ricciardella, Filibertofiliberto.ricciardella@gmail.com
Date: 26 March 2015
Number of Pages: 104
Institution: Università degli Studi di Napoli Federico II
Department: Ingegneria Industriale
Scuola di dottorato: Ingegneria industriale
Dottorato: Tecnologie innovative per materiali, sensori ed imaging
Ciclo di dottorato: 27
Coordinatore del Corso di dottorato:
nomeemail
Cassinese, Antonioantonio.cassinese@unina.it
Tutor:
nomeemail
Polichetti, TizianaUNSPECIFIED
Ninno, DomenicoUNSPECIFIED
Date: 26 March 2015
Number of Pages: 104
Uncontrolled Keywords: graphene, gas sensor
Settori scientifico-disciplinari del MIUR: Area 02 - Scienze fisiche > FIS/03 - Fisica della materia
Aree tematiche (7° programma Quadro): NANOSCIENZE, NANOTECNOLOGIE, MATERIALE E PRODUZIONE > Nanoscienze e Nanotecnologie
Date Deposited: 07 Apr 2015 14:03
Last Modified: 24 Sep 2015 10:18
URI: http://www.fedoa.unina.it/id/eprint/10129
DOI: 10.6092/UNINA/FEDOA/10129

Abstract

The thesis work is focused on two major items: 1. growth and characterization of graphene films; 2. test of the material sensing properties towards analytes by employing graphene-based chemi-resistors as transducers. The mostly exploited techniques for the graphene production are Liquid Phase Exfoliation (LPE) and Chemical Vapor Deposition. The material characterizations performed through Raman spectroscopy, Atomic Force Microscopy and Transmission Electron Microscopy are presented. The experimental results allow to argue the morphological and structural nature of such prepared materials. The issue regarding the GR defects is also addressed with the purpose to better understand the strong sensitive of material in the sensing field. The sensors, operating at room temperature and pressure as well as in presence of humidity, are tested towards several analytes, such as NO2, H2 and NH3. The sensors are calibrated in the sub-ppm range of NO2 so that the devices result to be particularly appealing as graphene-based sensors for NO2 operating in wet environment.

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