Author, as appears in the article.: Behi S; Bohli N; Casanova-Cháfer J; Llobet E; Abdelghani A

Department: Enginyeria Electrònica, Elèctrica i Automàtica

URV's Author/s: Casanova Chafer, Juan / Llobet Valero, Eduard

Keywords: Work function Wo3/graphene nanocomposite Tungsten oxide Tin oxide Sno2 nanoparticles Sensor array Sensor Sensitivity Room-temperature Metal oxide nanoparticles Graphene Gas-sensing properties Film Carbon nanotubes Btx Assisted hydrothermal method Aromatic voc tin oxide sensor array metal oxide nanoparticles graphene btx aromatic voc

Abstract: © 2020 by the authors. Licensee MDPI, Basel, Switzerland. Benzene, toluene, and xylene, commonly known as BTX, are hazardous aromatic organic vapors with high toxicity towards living organisms. Many techniques are being developed to provide the community with portable, cost effective, and high performance BTX sensing devices in order to effectively monitor the quality of air. In this paper, we study the effect of decorating graphene with tin oxide (SnO2) or tungsten oxide (WO3) nanoparticles on its performance as a chemoresistive material for detecting BTX vapors. Transmission electron microscopy and environmental scanning electron microscopy are used as morphological characterization techniques. SnO2-decorated graphene displayed high sensitivity towards benzene, toluene, and xylene with the lowest tested concentrations of 2 ppm, 1.5 ppm, and 0.2 ppm, respectively. In addition, we found that, by employing these nanomaterials, the observed response could provide a unique double signal confirmation to identify the presence of benzene vapors for monitoring occupational exposure in the textiles, painting, and adhesives industries or in fuel stations.

Thematic Areas: Zootecnia / recursos pesqueiros Química Medicine (miscellaneous) Medicina veterinaria Medicina iii Medicina ii Medicina i Materiais Matemática / probabilidade e estatística Linguística e literatura Letras / linguística Interdisciplinar Instruments & instrumentation Instrumentation Information systems Geografía Geociências Farmacia Engineering, electrical & electronic Engenharias iv Engenharias iii Engenharias ii Engenharias i Electrochemistry Electrical and electronic engineering Educação física Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, analytical Biotecnología Biodiversidade Biochemistry Atomic and molecular physics, and optics Astronomia / física Arquitetura, urbanismo e design Analytical chemistry

licence for use: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 1424-8220

Author's mail: juan.casanova@urv.cat eduard.llobet@urv.cat

Author identifier: 0000-0001-6164-4342

Record's date: 2023-05-14

Journal volume: 20

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/1424-8220/20/12/3413

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Sensors. 20 (12): 1-15

APA: Behi S; Bohli N; Casanova-Cháfer J; Llobet E; Abdelghani A (2020). Metal oxide nanoparticle-decorated few layer graphene nanoflake chemoresistors for the detection of aromatic volatile organic compounds. Sensors, 20(12), 1-15. DOI: 10.3390/s20123413

Article's DOI: 10.3390/s20123413

Entity: Universitat Rovira i Virgili

Journal publication year: 2020

Publication Type: Journal Publications