Laser-Deposited Carbon Aerogel Derived from Graphene Oxide Enables NO2-Selective Parts-per-Billion Sensing

Nufer, S. ; Lynch, P.J. ; Large, M.J. ; Ogilvie, S.P. ; Salvage, J.P. ; Pelaez-Fernandez, M. (Universidad de Zaragoza) ; Waters, T. ; Jurewicz, I. ; Muñoz, E. ; Arenal, R. (Universidad de Zaragoza) ; Benito, A.M. ; Maser, W.K. ; Tagmatarchis, N. ; Ewels, C.P. ; Brunton, A. ; Dalton, A.B.

Resumen: Laser-deposited carbon aerogel is a low-density porous network of carbon clusters synthesized using a laser process. A one-step synthesis, involving deposition and annealing, results in the formation of a thin porous conductive film which can be applied as a chemiresistor. This material is sensitive to NO2 compared to ammonia and other volatile organic compounds and is able to detect ultra-low concentrations down to at least 10 parts-per-billion. The sensing mechanism, based on the solubility of NO2 in the water layer adsorbed on the aerogel, increases the usability of the sensor in practically relevant ambient environments. A heating step, achieved in tandem with a microheater, allows the recovery to the baseline, making it operable in real world environments. This, in combination with its low cost and scalable production, makes it promising for Internet-of-Things air quality monitoring.

Idioma: Inglés

DOI: 10.1021/acsami.0c09112

Año: 2020

Publicado en: ACS Applied Materials and Interfaces 12, 35 (2020), 39541-39548
ISSN: 1944-8244

Factor impacto JCR: 9.229 (2020)

Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 21 / 106 = 0.198 (2020) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 44 / 333 = 0.132 (2020) - Q1 - T1

Factor impacto SCIMAGO: 2.535 - Materials Science (miscellaneous) (Q1) - Nanoscience and Nanotechnology (Q1) - Medicine (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/T03-17R
Financiación: info:eu-repo/grantAgreement/ES/DGA/T03-20R
Financiación: info:eu-repo/grantAgreement/EC/H2020/642742/EU/Graphene-based nanomaterials for touchscreen technologies: Comprehension, Commerce and Communication/Enabling Excellence
Financiación: info:eu-repo/grantAgreement/EC/H2020/823717/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM3
Financiación: info:eu-repo/grantAgreement/ES/MINECO-AEI-FEDER/MAT2016-79776-P

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)