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An Ultrasensitive Room-Temperature H2S Gas Sensor Based on 3D Assembly of Cu2O Decorated WS2 Nanomaterial

  • Dades identificatives

    Identificador: imarina:9230177
    Autors:
    Alagh, AanchalAnnanouch, Fatima EzahraUmek, PolonaBittencourt, CarlaColomer, Jean FrancoisLlobet, Eduard
    Resum:
    Herein, we report for the first time on the fabrication of a hybrid material consisting of Cu2O nanoparticles-decorated multilayered tungsten disulfide nanostructures and demonstrate their remarkable gas sensing characteristics towards hydrogen sulfide gas. In the first step, a continuous film of WS2 was deposited directly on commercial alumina substrate by adopting a facile route combining aerosol-assisted chemical vapor deposition with H-2 free atmospheric pressure CVD technique. For functionalization an additional step of synthesis was added where copper oxide nanoparticles were grown and deposited directly over as-grown tungsten disulfide at low temperature (i.e., 150 degrees C) using a simple and cost-effective technique. The morphological, structural and chemical characteristics were investigated using FESEM, TEM, and EDX spectroscopy. The gas-sensing studies performed shows that this hybrid nanomaterial has excellent sensitivity towards hydrogen sulfide (11-times increase in response compared to that of pristine WS2 sensor) at moderate temperature (150 degrees C). Additionally, functionalization of pristine WS2 sensor with Cu2O nanoparticles further enhances the gas sensing performance towards the targeted gas even at room temperature (13-times increase in response compared with that of pristine WS2 sensor). Moreover, results obtained from humidity cross-sensitivity of Cu2O-WS2 sensor indicates superior gas sensing response (with a negligible decrease in response) as compared to pristine WS2 sensor, when ambient humidity is increased to 50%, which is rarely found in metal oxide-based sensors. This study could add a significant research value in the gas sensor domain.
  • Altres:

    Autor segons l'article: Alagh, Aanchal; Annanouch, Fatima Ezahra; Umek, Polona; Bittencourt, Carla; Colomer, Jean Francois; Llobet, Eduard
    Departament: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/s de la URV: Alagh, Aanchal / Annanouch, Fatima Ezahra / Llobet Valero, Eduard
    Codi de projecte: Project Nr. 823895
    Paraules clau: Ws? Ws2 Tungsten compounds Tmds Temperature Synthesis (chemical) Sulfur determination Sulfur compounds Sensing properties Oxide minerals Nanostructured materials Nanoparticles Moderate temperature Metals Hydrogen sulfide gas Hydrogen sulfide Hybrid materials H?s H2s Gases Gas sensor Gas sensing response Gas sensing electrodes Gas sensing characteristics Gas detectors Cu?o Cu2o Cost effectiveness Copper oxides Copper oxide nanoparticles Chemical vapor deposition Chemical detection Chemical characteristic Atmospheric pressure cvd Atmospheric pressure Atmospheric humidity Apcvd Aluminum oxide Alumina Aerosol-assisted chemical vapor depositions 2d
    Resum: Herein, we report for the first time on the fabrication of a hybrid material consisting of Cu2O nanoparticles-decorated multilayered tungsten disulfide nanostructures and demonstrate their remarkable gas sensing characteristics towards hydrogen sulfide gas. In the first step, a continuous film of WS2 was deposited directly on commercial alumina substrate by adopting a facile route combining aerosol-assisted chemical vapor deposition with H-2 free atmospheric pressure CVD technique. For functionalization an additional step of synthesis was added where copper oxide nanoparticles were grown and deposited directly over as-grown tungsten disulfide at low temperature (i.e., 150 degrees C) using a simple and cost-effective technique. The morphological, structural and chemical characteristics were investigated using FESEM, TEM, and EDX spectroscopy. The gas-sensing studies performed shows that this hybrid nanomaterial has excellent sensitivity towards hydrogen sulfide (11-times increase in response compared to that of pristine WS2 sensor) at moderate temperature (150 degrees C). Additionally, functionalization of pristine WS2 sensor with Cu2O nanoparticles further enhances the gas sensing performance towards the targeted gas even at room temperature (13-times increase in response compared with that of pristine WS2 sensor). Moreover, results obtained from humidity cross-sensitivity of Cu2O-WS2 sensor indicates superior gas sensing response (with a negligible decrease in response) as compared to pristine WS2 sensor, when ambient humidity is increased to 50%, which is rarely found in metal oxide-based sensors. This study could add a significant research value in the gas sensor domain.
    Àrees temàtiques: Química Physics, applied Nutrição Medicina veterinaria Medicina ii Materiais Matemática / probabilidade e estatística Interdisciplinar Instruments & instrumentation Instrumentation Engineering, electrical & electronic Engenharias iv Engenharias iii Engenharias ii Engenharias i Electrical and electronic engineering Ciências biológicas ii Ciências biológicas i Ciência da computação Biotecnología Astronomia / física
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: fatimaezahra.annanouch@urv.cat aanchal.alagh@estudiants.urv.cat aanchal.alagh@estudiants.urv.cat eduard.llobet@urv.cat
    Identificador de l'autor: 0000-0003-1533-6482 0000-0003-2466-8219 0000-0003-2466-8219 0000-0001-6164-4342
    Data d'alta del registre: 2024-07-27
    Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
    Enllaç font original: https://ieeexplore.ieee.org/document/9511472
    Programa de finançament: H2020- MSCA-RISE-2018
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Ieee Sensors Journal. 21 (19): 21212-21220
    Referència de l'ítem segons les normes APA: Alagh, Aanchal; Annanouch, Fatima Ezahra; Umek, Polona; Bittencourt, Carla; Colomer, Jean Francois; Llobet, Eduard (2021). An Ultrasensitive Room-Temperature H2S Gas Sensor Based on 3D Assembly of Cu2O Decorated WS2 Nanomaterial. Ieee Sensors Journal, 21(19), 21212-21220. DOI: 10.1109/JSEN.2021.3103925
    Acrònim: SENSOFT
    DOI de l'article: 10.1109/JSEN.2021.3103925
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2021
    Acció del programa de finançament: SMART SENSING FOR RAPID RESPONSE TO CHEMICAL THREATS ON SOFT TARGETS
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Electrical and Electronic Engineering,Engineering, Electrical & Electronic,Instrumentation,Instruments & Instrumentation,Physics, Applied
    Ws?
    Ws2
    Tungsten compounds
    Tmds
    Temperature
    Synthesis (chemical)
    Sulfur determination
    Sulfur compounds
    Sensing properties
    Oxide minerals
    Nanostructured materials
    Nanoparticles
    Moderate temperature
    Metals
    Hydrogen sulfide gas
    Hydrogen sulfide
    Hybrid materials
    H?s
    H2s
    Gases
    Gas sensor
    Gas sensing response
    Gas sensing electrodes
    Gas sensing characteristics
    Gas detectors
    Cu?o
    Cu2o
    Cost effectiveness
    Copper oxides
    Copper oxide nanoparticles
    Chemical vapor deposition
    Chemical detection
    Chemical characteristic
    Atmospheric pressure cvd
    Atmospheric pressure
    Atmospheric humidity
    Apcvd
    Aluminum oxide
    Alumina
    Aerosol-assisted chemical vapor depositions
    2d
    Química
    Physics, applied
    Nutrição
    Medicina veterinaria
    Medicina ii
    Materiais
    Matemática / probabilidade e estatística
    Interdisciplinar
    Instruments & instrumentation
    Instrumentation
    Engineering, electrical & electronic
    Engenharias iv
    Engenharias iii
    Engenharias ii
    Engenharias i
    Electrical and electronic engineering
    Ciências biológicas ii
    Ciências biológicas i
    Ciência da computação
    Biotecnología
    Astronomia / física
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