Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Octahedral Molybdenum Iodide Clusters Supported on Graphene for Resistive and Optical Gas Sensing

  • Dades identificatives

    Identificador: imarina:9287542
    Autors:
    Casanova-Chafer, JuanGarcia-Aboal, RocioAtienzar, PedroFeliz, MartaLlobet, Eduard
    Resum:
    This paper reports for the first time a gas-sensitive nanohybrid based on octahedral molybdenum iodide clusters supported on graphene flakes (Mo6@Graphene). The possibility of integrating this material into two different transducing schemes for gas sensing is proposed since the nanomaterial changes both its electrical resistivity and optical properties when exposed to gases and at room temperature. Particularly, when implemented in a chemoresistive device, the Mo6@Graphene hybrid showed an outstanding sensing performance toward NO2, revealing a limit of quantification of about 10 ppb and excellent response repeatability (0.9% of relative error). While the Mo6@Graphene chemoresistor was almost insensitive to NH3, the use of an optical transduction scheme (changes in photoluminescence) provided an outstanding detection of NH3 even for a low loading of Mo6. Nevertheless, the photoluminescence was not affected by the presence of NO2. In addition, the hybrid material revealed high stability of its gas sensing properties over time and under ambient moisture. Computational chemistry calculations were performed to better understand these results, and plausible sensing mechanisms were presented accordingly. These results pave the way to develop a new generation of multi-parameter sensors in which electronic and optical interrogation techniques can be implemented simultaneously, advancing toward the realization of highly selective and orthogonal gas sensing.
  • Altres:

    Autor segons l'article: Casanova-Chafer, Juan; Garcia-Aboal, Rocio; Atienzar, Pedro; Feliz, Marta; Llobet, Eduard
    Departament: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/s de la URV: Casanova Chafer, Juan / Llobet Valero, Eduard
    Paraules clau: Resistive sensor Optical sensor Molybdenum cluster Graphene Gas detection Ab-initio pseudopotentials sensors resistive sensor potential basis-sets polarization functions oxide optical sensor graphene generation gas detection functionalization elements complexes br
    Resum: This paper reports for the first time a gas-sensitive nanohybrid based on octahedral molybdenum iodide clusters supported on graphene flakes (Mo6@Graphene). The possibility of integrating this material into two different transducing schemes for gas sensing is proposed since the nanomaterial changes both its electrical resistivity and optical properties when exposed to gases and at room temperature. Particularly, when implemented in a chemoresistive device, the Mo6@Graphene hybrid showed an outstanding sensing performance toward NO2, revealing a limit of quantification of about 10 ppb and excellent response repeatability (0.9% of relative error). While the Mo6@Graphene chemoresistor was almost insensitive to NH3, the use of an optical transduction scheme (changes in photoluminescence) provided an outstanding detection of NH3 even for a low loading of Mo6. Nevertheless, the photoluminescence was not affected by the presence of NO2. In addition, the hybrid material revealed high stability of its gas sensing properties over time and under ambient moisture. Computational chemistry calculations were performed to better understand these results, and plausible sensing mechanisms were presented accordingly. These results pave the way to develop a new generation of multi-parameter sensors in which electronic and optical interrogation techniques can be implemented simultaneously, advancing toward the realization of highly selective and orthogonal gas sensing.
    Àrees temàtiques: Química Nanoscience and nanotechnology Nanoscience & nanotechnology Medicine (miscellaneous) Medicina veterinaria Medicina ii Medicina i Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) Materiais Interdisciplinar General materials science Farmacia Engenharias iv Engenharias iii Engenharias ii Economia Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Biotecnología Biodiversidade Astronomia / física Arquitetura, urbanismo e design
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: juan.casanova@urv.cat eduard.llobet@urv.cat
    Identificador de l'autor: 0000-0001-6164-4342
    Data d'alta del registre: 2024-10-12
    Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
    Enllaç font original: https://pubs.acs.org/doi/full/10.1021/acsami.2c15716
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Acs Applied Materials & Interfaces. 14 (51): 57122-57132
    Referència de l'ítem segons les normes APA: Casanova-Chafer, Juan; Garcia-Aboal, Rocio; Atienzar, Pedro; Feliz, Marta; Llobet, Eduard (2022). Octahedral Molybdenum Iodide Clusters Supported on Graphene for Resistive and Optical Gas Sensing. Acs Applied Materials & Interfaces, 14(51), 57122-57132. DOI: 10.1021/acsami.2c15716
    DOI de l'article: 10.1021/acsami.2c15716
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2022
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Materials Science (Miscellaneous),Materials Science, Multidisciplinary,Medicine (Miscellaneous),Nanoscience & Nanotechnology,Nanoscience and Nanotechnology
    Resistive sensor
    Optical sensor
    Molybdenum cluster
    Graphene
    Gas detection
    Ab-initio pseudopotentials
    sensors
    resistive sensor
    potential basis-sets
    polarization functions
    oxide
    optical sensor
    graphene
    generation
    gas detection
    functionalization
    elements
    complexes
    br
    Química
    Nanoscience and nanotechnology
    Nanoscience & nanotechnology
    Medicine (miscellaneous)
    Medicina veterinaria
    Medicina ii
    Medicina i
    Materials science, multidisciplinary
    Materials science (miscellaneous)
    Materials science (all)
    Materiais
    Interdisciplinar
    General materials science
    Farmacia
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Economia
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Biotecnología
    Biodiversidade
    Astronomia / física
    Arquitetura, urbanismo e design
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