Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Gas Sensing with Iridium Oxide Nanoparticle Decorated Carbon Nanotubes

  • Identification data

    Identifier: imarina:5133006
    Authors:
    Casanova-Cháfer J, Navarrete E, Noirfalise X, Umek P, Bittencourt C, Llobet E
    Abstract:
    The properties of multi-wall carbon nanotubes decorated with iridium oxide nanoparticles (IrOx-MWCNTs) are studied to detect harmful gases such as nitrogen dioxide and ammonia. IrOx nanoparticles were synthetized using a two-step method, based on a hydrolysis and acid condensation growth mechanism. The metal oxide nanoparticles obtained were employed for decorating the sidewalls of carbon nanotubes. Iridium-oxide nanoparticle decorated carbon nanotube material showed higher and more stable responses towards NH3 and NO2 than bare carbon nanotubes under different experimental conditions, establishing the optimal operating temperatures and estimating the limits of detection and quantification. Furthermore, the nanomaterials employed were studied using different morphological and compositional characterization techniques and a gas sensing mechanism is proposed.
  • Others:

    Author, as appears in the article.: Casanova-Cháfer J, Navarrete E, Noirfalise X, Umek P, Bittencourt C, Llobet E
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    e-ISSN: 1424-8220
    URV's Author/s: Llobet Valero, Eduard / Navarrete Gatell, Èric
    Keywords: Sensitivity Room-temperature Relative humidity effect Networks Mwcnts Metal nanoparticles Mechanisms Iridium oxide Ir Humidity sensor Gold Functionalization Films Chemoresistive gas sensor Carbon nanotubes metal nanoparticles iridium oxide chemoresistive gas sensor carbon nanotubes
    Abstract: The properties of multi-wall carbon nanotubes decorated with iridium oxide nanoparticles (IrOx-MWCNTs) are studied to detect harmful gases such as nitrogen dioxide and ammonia. IrOx nanoparticles were synthetized using a two-step method, based on a hydrolysis and acid condensation growth mechanism. The metal oxide nanoparticles obtained were employed for decorating the sidewalls of carbon nanotubes. Iridium-oxide nanoparticle decorated carbon nanotube material showed higher and more stable responses towards NH3 and NO2 than bare carbon nanotubes under different experimental conditions, establishing the optimal operating temperatures and estimating the limits of detection and quantification. Furthermore, the nanomaterials employed were studied using different morphological and compositional characterization techniques and a gas sensing mechanism is proposed.
    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: 14248220
    Author's mail: eric.navarrete@urv.cat eduard.llobet@urv.cat eric.navarrete@urv.cat
    Author identifier: 0000-0001-6164-4342
    Record's date: 2023-02-18
    Journal volume: 19
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.mdpi.com/1424-8220/19/1/113
    Papper original source: Sensors. 19 (1):
    APA: Casanova-Cháfer J, Navarrete E, Noirfalise X, Umek P, Bittencourt C, Llobet E (2019). Gas Sensing with Iridium Oxide Nanoparticle Decorated Carbon Nanotubes. Sensors, 19(1), -. DOI: 10.3390/s19010113
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Article's DOI: 10.3390/s19010113
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2019
    Publication Type: Journal Publications
  • Keywords:

    Analytical Chemistry,Atomic and Molecular Physics, and Optics,Biochemistry,Chemistry, Analytical,Electrical and Electronic Engineering,Electrochemistry,Engineering, Electrical & Electronic,Information Systems,Instrumentation,Instruments & Instrumentation,Medicine (Miscellaneous)
    Sensitivity
    Room-temperature
    Relative humidity effect
    Networks
    Mwcnts
    Metal nanoparticles
    Mechanisms
    Iridium oxide
    Ir
    Humidity sensor
    Gold
    Functionalization
    Films
    Chemoresistive gas sensor
    Carbon nanotubes
    metal nanoparticles
    iridium oxide
    chemoresistive gas sensor
    carbon nanotubes
    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
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