Repositori institucional URV
| URV's Author/s: | Alagh, Aanchal / Annanouch, Fatima Ezahra / Llobet Valero, Eduard |
| Author, as appears in the article.: | Alagh, Aanchal; Annanouch, Fatima Ezahra; Umek, Polona; Bittencourt, Carla; Colomer, Jean Francois; Llobet, Eduard |
| 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 |
| Journal publication year: | 2021 |
| Publication Type: | Journal Publications |
| 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 |
| Papper original source: | Ieee Sensors Journal. 21 (19): 21212-21220 |
| Abstract: | 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. |
| Article's DOI: | 10.1109/JSEN.2021.3103925 |
| Link to the original source: | https://ieeexplore.ieee.org/document/9511472 |
| Papper version: | info:eu-repo/semantics/acceptedVersion |
| licence for use: | https://creativecommons.org/licenses/by/3.0/es/ |
| Department: | Enginyeria Electrònica, Elèctrica i Automàtica |
| Licence document URL: | https://repositori.urv.cat/ca/proteccio-de-dades/ |
| Thematic Areas: | 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 |
| Keywords: | 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 |
| Funding program: | H2020- MSCA-RISE-2018 |
| Funding program action: | SMART SENSING FOR RAPID RESPONSE TO CHEMICAL THREATS ON SOFT TARGETS |
| Acronym: | SENSOFT |
| Project code: | Project Nr. 823895 |
| Entity: | Universitat Rovira i Virgili |
| Record's date: | 2024-07-27 |
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