Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

CVD growth of self-assembled 2D and 1D WS2 nanomaterials for the ultrasensitive detection of NO2

  • Identification data

    Identifier: imarina:8505103
    Authors:
    Alagh, AanchalAnnanouch, Fatima EzahraUmek, PolonaBittencourt, CarlaSierra-Castillo, AyrtonHaye, EmileColomer, Jean FrancoisLlobet, Eduard
    Abstract:
    © 2020 Elsevier B.V. Herein, we report for the first time on the facile synthesis of 2D layered WS2 nanosheets assembled on 1D WS2 nanostructures by combining the aerosol assisted chemical vapor deposition (AA-CVD) method with H2-free atmospheric pressure CVD, for an ultrasensitive detection of NO2. This synthesis strategy allows us a direct integration of the sensing material onto the sensor transducer with high growth yield and uniform coverage. Two different WS2 morphologies (nanotriangles and nanoflakes) were prepared and investigated. The results show that the assembly of layered WS2 nanosheets on a 3D architecture leads to an improvement in sensing performance by maintaining a high surface area in an accessible porous network. The sensors fabricated show stable, reproducible and remarkable responses towards NO2 at ppb concentration levels. The highest sensitivity was recorded for WS2 NT sensors, with an unprecedented ultra-low detection limit under 5 ppb. Additionally, this material has demonstrated its ability to detect 800 ppb of NO2 even when operated at room temperature (25 °C). Regarding humidity cross-sensitivity, our WS2 sensors remain stable and functional for detecting NO2 at ppb levels (i.e., a moderate response decrease is observed) when ambient humidity is raised to 50%. An 8-month long-term stability study has been conducted, which indicates that WS2-NT sensors show a very stable response to NO2 over time.
  • Others:

    Author, as appears in the article.: Alagh, Aanchal; Annanouch, Fatima Ezahra; Umek, Polona; Bittencourt, Carla; Sierra-Castillo, Ayrton; Haye, Emile; Colomer, Jean Francois; Llobet, Eduard
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: Alagh, Aanchal / Annanouch, Fatima Ezahra / Llobet Valero, Eduard
    Project code: Project Nr. 823895
    Keywords: Ws2 Ws 2 Tmds Temperature Sensors Performance Monolayer ws2 Humidity Gas sensor Gas Fabrication Cvd Aerosol-assisted cvd Aacvd 2-dimensional sns2
    Abstract: © 2020 Elsevier B.V. Herein, we report for the first time on the facile synthesis of 2D layered WS2 nanosheets assembled on 1D WS2 nanostructures by combining the aerosol assisted chemical vapor deposition (AA-CVD) method with H2-free atmospheric pressure CVD, for an ultrasensitive detection of NO2. This synthesis strategy allows us a direct integration of the sensing material onto the sensor transducer with high growth yield and uniform coverage. Two different WS2 morphologies (nanotriangles and nanoflakes) were prepared and investigated. The results show that the assembly of layered WS2 nanosheets on a 3D architecture leads to an improvement in sensing performance by maintaining a high surface area in an accessible porous network. The sensors fabricated show stable, reproducible and remarkable responses towards NO2 at ppb concentration levels. The highest sensitivity was recorded for WS2 NT sensors, with an unprecedented ultra-low detection limit under 5 ppb. Additionally, this material has demonstrated its ability to detect 800 ppb of NO2 even when operated at room temperature (25 °C). Regarding humidity cross-sensitivity, our WS2 sensors remain stable and functional for detecting NO2 at ppb levels (i.e., a moderate response decrease is observed) when ambient humidity is raised to 50%. An 8-month long-term stability study has been conducted, which indicates that WS2-NT sensors show a very stable response to NO2 over time.
    Thematic Areas: Surfaces, coatings and films Spectroscopy Química Odontología Nutrição Metals and alloys Medicina ii Medicina i Materials chemistry Materiais Interdisciplinar Instruments & instrumentation Instrumentation Farmacia Engenharias iv Engenharias iii Engenharias ii Engenharias i Electronic, optical and magnetic materials Electrochemistry Electrical and electronic engineering Educação física Educação Economia Condensed matter physics Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry, analytical Biotecnología Biodiversidade Astronomia / física Analytical chemistry
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 09254005
    Author's mail: fatimaezahra.annanouch@urv.cat aanchal.alagh@estudiants.urv.cat aanchal.alagh@estudiants.urv.cat eduard.llobet@urv.cat
    Author identifier: 0000-0003-1533-6482 0000-0003-2466-8219 0000-0003-2466-8219 0000-0001-6164-4342
    Record's date: 2024-07-27
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S0925400520311606
    Funding program: H2020- MSCA-RISE-2018
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Sensors And Actuators B-Chemical. 326 (128813): 128813-
    APA: Alagh, Aanchal; Annanouch, Fatima Ezahra; Umek, Polona; Bittencourt, Carla; Sierra-Castillo, Ayrton; Haye, Emile; Colomer, Jean Francois; Llobet, Edua (2021). CVD growth of self-assembled 2D and 1D WS2 nanomaterials for the ultrasensitive detection of NO2. Sensors And Actuators B-Chemical, 326(128813), 128813-. DOI: 10.1016/j.snb.2020.128813
    Acronym: SENSOFT
    Article's DOI: 10.1016/j.snb.2020.128813
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2021
    Funding program action: SMART SENSING FOR RAPID RESPONSE TO CHEMICAL THREATS ON SOFT TARGETS
    Publication Type: Journal Publications
  • Keywords:

    Chemistry, Analytical,Condensed Matter Physics,Electrical and Electronic Engineering,Electrochemistry,Electronic, Optical and Magnetic Materials,Instrumentation,Instruments & Instrumentation,Materials Chemistry,Metals and Alloys,Surfaces, Coatings and Films
    Ws2
    Ws 2
    Tmds
    Temperature
    Sensors
    Performance
    Monolayer ws2
    Humidity
    Gas sensor
    Gas
    Fabrication
    Cvd
    Aerosol-assisted cvd
    Aacvd
    2-dimensional sns2
    Surfaces, coatings and films
    Spectroscopy
    Química
    Odontología
    Nutrição
    Metals and alloys
    Medicina ii
    Medicina i
    Materials chemistry
    Materiais
    Interdisciplinar
    Instruments & instrumentation
    Instrumentation
    Farmacia
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Electronic, optical and magnetic materials
    Electrochemistry
    Electrical and electronic engineering
    Educação física
    Educação
    Economia
    Condensed matter physics
    Ciências biológicas iii
    Ciências biológicas ii
    Ciências biológicas i
    Ciências ambientais
    Ciências agrárias i
    Ciência de alimentos
    Ciência da computação
    Chemistry, analytical
    Biotecnología
    Biodiversidade
    Astronomia / física
    Analytical chemistry
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