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Título: | Carbon SH-SAW-Based Electronic Nose to Discriminate and Classify Sub-ppm NO2 |
Autor: | Cruz, Carlos; Matatagui, Daniel CSIC ORCID; Ramírez, Cristina CSIC ORCID; Badillo-Ramírez, Isidro; De la O-Cuevas, Emmanuel; Saniger, J.M.; Horrillo, Carmen CSIC ORCID | Palabras clave: | Electronic nose NO2 carbon nanomaterials graphene oxide surface acoustic wave (SAW) pollutants Discrimination classification Machine Learning (ML) |
Fecha de publicación: | 7-feb-2022 | Editor: | Multidisciplinary Digital Publishing Institute | Citación: | Sensors 22: 1261- (2022) | Resumen: | In this research, a compact electronic nose (e-nose) based on a shear horizontal surface acoustic wave (SH-SAW) sensor array is proposed for the NO2 detection, classification and discrimination among some of the most relevant surrounding toxic chemicals, such as carbon monoxide (CO), ammonia (NH3), benzene (C6H6) and acetone (C3H6O). Carbon-based nanostructured materials (CBNm), such as mesoporous carbon (MC), reduced graphene oxide (rGO), graphene oxide (GO) and polydopamine/reduced graphene oxide (PDA/rGO) are deposited as a sensitive layer with con-trolled spray and Langmuir–Blodgett techniques. We show the potential of the mass loading and elastic effects of the CBNm to enhance the detection, the classification and the discrimination of NO2 among different gases by using Machine Learning (ML) techniques (e.g., PCA, LDA and KNN). The small dimensions and low cost make this analytical system a promising candidate for the on-site discrimination of sub-ppm NO2. | Descripción: | 13 páginas, 9 figuras, 2 tablas | Versión del editor: | http://dx.doi.org/10.3390/s22031261 | URI: | http://hdl.handle.net/10261/295599 | DOI: | 10.3390/s22031261 | Identificadores: | doi: 10.3390/s22031261 issn: 1424-8220 |
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Carbon_SH-SAW_based_electronic_nose.pdf | 3,13 MB | Adobe PDF | Visualizar/Abrir |
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