Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Graphene based Mo6 cluster hybrid for detecting simulant nerve agent DMMP

  • Identification data

    Identifier: imarina:9366514
  • Authors:

    Casanova-Chafer, J
    Blanch, X
    Moreno, A
    Garcia-Aboal, R
    Atienzar, P
    Llobet, E
    Feliz, M
  • Others:

    Author, as appears in the article.: Casanova-Chafer, J; Blanch, X; Moreno, A; Garcia-Aboal, R; Atienzar, P; Llobet, E; Feliz, M
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: Llobet Valero, Eduard
    Keywords: Trace levels Potential basis-sets Polarization functions Performance Parameters Nerve agent Nanocomposite Mo 6 cluster Mo cluster 6 Graphene Generation Gas sensors Dmmp Ab-initio pseudopotentials
    Abstract: Nerve agents are highly toxic chemical compounds that pose significant threats to human health and safety. Detecting and identifying these agents quickly is crucial for preventing their exposure and providing timely treatment. This study proposes the use of nanohybrids comprising crystalline octahedral molybdenum iodide cluster material supported on graphene (Mo6@Graphene) as a novel sensing material for the detection of dimethyl methylphosphonate (DMMP), a simulant of sarin nerve agent. The electrical sensing performance towards different concentrations of DMMP and at room temperature demonstrated fast and sensitive responses to DMMP, with almost full recovery of the sensor baseline in a few minutes. The calibration curve obtained showed a linear relationship between the sensor response and DMMP concentration, enabling the estimation of the limit of detection (LOD) of 270 ppb. The robustness of the Mo6@Graphene nanomaterial towards DMMP was assessed using various techniques, including Raman spectroscopy, X-ray diffraction and photoelectron spectroscopy. The binding energies (BEs) between DMMP and the supported Mo6 clusters determined by DFT calculations revealed H-bonding interactions involved in the sensing mechanism. The excellent sensing performance of the Mo6@Graphene film, combined with its low power consumption and high stability, makes it a promising candidate for the detection of nerve agents and their simulants.
    Thematic Areas: Signal processing Engenharias iv Electronic, optical and magnetic materials Electrical and electronic engineering Chemistry, analytical Biotechnology
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: eduard.llobet@urv.cat
    Author identifier: 0000-0001-6164-4342
    Record's date: 2024-07-20
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/pii/S2214180423000557
    Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Sensing And Bio-Sensing Research. 43 100603-
    APA: Casanova-Chafer, J; Blanch, X; Moreno, A; Garcia-Aboal, R; Atienzar, P; Llobet, E; Feliz, M (2024). Graphene based Mo6 cluster hybrid for detecting simulant nerve agent DMMP. Sensing And Bio-Sensing Research, 43(), 100603-. DOI: 10.1016/j.sbsr.2023.100603
    Article's DOI: 10.1016/j.sbsr.2023.100603
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2024
    Publication Type: Journal Publications
  • Keywords:

    Biotechnology,Chemistry, Analytical,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Signal Processing
    Trace levels
    Potential basis-sets
    Polarization functions
    Performance
    Parameters
    Nerve agent
    Nanocomposite
    Mo 6 cluster
    Mo cluster 6
    Graphene
    Generation
    Gas sensors
    Dmmp
    Ab-initio pseudopotentials
    Signal processing
    Engenharias iv
    Electronic, optical and magnetic materials
    Electrical and electronic engineering
    Chemistry, analytical
    Biotechnology
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