Repositori institucional URV
| URV's Author/s: | Llobet Valero, Eduard |
| Author, as appears in the article.: | Walleni C; Ali MB; Ncib MF; Llobet E |
| Author's mail: | eduard.llobet@urv.cat |
| Author identifier: | 0000-0001-6164-4342 |
| Journal publication year: | 2025 |
| Publication Type: | Journal Publications |
| APA: | Walleni C; Ali MB; Ncib MF; Llobet E (2025). Synergistic Enhancement of Chemiresistive NO2 Gas Sensors Using Nitrogen-Doped Reduced Graphene Oxide (N-rGO) Decorated with Nickel Oxide (NiO) Nanoparticles: Achieving sub-ppb Detection Limit.. Sensors, 25(5), 1631-. DOI: 10.3390/s25051631 |
| Paper original source: | Sensors. 25 (5): 1631- |
| Abstract: | Detecting low nitrogen dioxide concentrations (NO2) is crucial for environmental monitoring. In this paper, we report the synergistic effect of decorating nitrogen-doped reduced graphene oxide (N-rGO) with nickel oxide (NiO) nanoparticles for developing highly selective and sensitive chemiresistive NO2 gas sensors. The N-rGO/NiO sensor was synthesized straightforwardly, ensuring uniform decoration of NiO nanoparticles on the N-rGO surface. Comprehensive characterization using SEM, TEM, XRD, and Raman spectroscopy confirmed the successful integration of NiO nanoparticles with N-rGO and revealed key structural and morphological features contributing to its enhanced sensing performance. As a result, the NiO/N-rGO nanohybrids demonstrate a significantly enhanced response five orders of magnitude higher than that of N-rGO toward low NO2 concentrations (<1 ppm) at 100 °C. Moreover, the present device has an outstanding performance, high sensitivity, and low limit of detection (<1 ppb). The findings pave the way for integrating these sensors into advanced applications, including environmental monitoring and IoT-enabled air quality management systems. |
| Article's DOI: | 10.3390/s25051631 |
| Link to the original source: | https://www.mdpi.com/1424-8220/25/5/1631 |
| Paper version: | info:eu-repo/semantics/publishedVersion |
| 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: | Analytical chemistry Arquitetura, urbanismo e design Astronomia / física Atomic and molecular physics, and optics Biochemistry Biodiversidade Biotecnología Chemistry, analytical Ciência da computação Ciência de alimentos Ciências agrárias i Ciências ambientais Ciências biológicas i Ciências biológicas ii Ciências biológicas iii Educação física Electrical and electronic engineering Electrochemistry Engenharias i Engenharias ii Engenharias iii Engenharias iv Engineering, electrical & electronic Farmacia Geociências Geografía Information systems Instrumentation Instruments & instrumentation Interdisciplinar Letras / linguística Linguística e literatura Matemática / probabilidade e estatística Materiais Medicina i Medicina ii Medicina iii Medicina veterinaria Medicine (miscellaneous) Química Zootecnia / recursos pesqueiros |
| Keywords: | Gas sensing N-rgo Nio No2 |
| Entity: | Universitat Rovira i Virgili |
| Record's date: | 2025-03-31 |
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