Reduced Graphene Oxide-TiO2 Nanotube Composite: Comprehensive Study for Gas-Sensing Applications

Year: 2018

Authors: Galstyan V., Ponzoni A., Kholmanov I., Natile M. M., Comini E., Nematov S., Sberveglieri G.

Autors Affiliation: Univ Brescia, Sensor Lab, Dept Informat Engn, Via Valotti 9, I-25133 Brescia, Italy; CNR, Natl Inst Opt, Via Branze 45, I-25123 Brescia, Italy; Univ Texas Austin, Dept Mech Engn, Austin, TX 78712 USA; Univ Padua, CNR, Inst Condensed Matter Chem & Technol Energy, Dept Chem Sci, Via F Marzolo 1, I-35131 Padua, Italy; Tashkent State Tech Univ, Univ Skaya 2, Tashkent 100069, Uzbekistan.

Abstract: Graphene oxide (GO) and reduced graphene oxide (RGO) have unique properties that can revolutionize the performances of functional devices. Graphene-based materials can be coupled with metal oxide nanomaterials for gas-sensing applications. In this work, we report the synthesis and gas-sensing properties of a composite material based on RGO-loaded TiO2 nanotubes. To properly tune the reduction of GO to RGO, we adopted a gas-phase process that can be applied in situ on each gas sensor device, allowing one to track the process effects through sensor conductance. We systematically investigated the gas-response dependence from the RGO loading and its reduction, showing the occurrence of an optimal RGO concentration arising from the interplay of these two parameters. Hence, these two factors should be considered in parallel to functionalize the metal oxide materials with GO for the fabrication of chemical sensor devices.

Journal/Review: ACS APPLIED NANO MATERIALS

Volume: 1 (12)      Pages from: 7098  to: 7105

KeyWords: graphene oxide; reduced graphene oxide; reduction effect; TiO2 nanotube; gas sensing
DOI: 10.1021/acsanm.8b01924

Citations: 41
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2024-10-27
References taken from IsiWeb of Knowledge: (subscribers only)
Connecting to view paper tab on IsiWeb: Click here
Connecting to view citations from IsiWeb: Click here