RT Journal Article
T1 Molecular architecture strategies for UV-enhanced NO2 sensors under ambient conditions
A1 Pérez Roman, Berta
A1 López Sánchez, Jesús
A1 Mazo, M. Alejandra
A1 Peña Moreno, Álvaro
A1 Calatayud, David G.
A1 Marín Palacios, María Pilar
A1 Pascual, Laura
A1 Rojas Hernández, Rocío E.
A1 Matatagui Cruz, Daniel
A1 Rubio Marcos, Fernando
AB Detecting nitrogen dioxide (NO₂) below sub-ppm levels is critical for mitigating health risks associated with air pollution. Carbon-based materials are promising candidates for gas sensing, but their performance depends strongly on structural and chemical tuning. Here we show that nitrogen-doped carbide-derived carbons syn­thesized using dendritic molecular architectures exhibit enhanced gas-sensing properties. The resulting 2D porous structure demonstrates p-type response to NO₂, with a sensitivity of 7.9 ± 2.8 %/ppm in dark conditions. Under ultraviolet illumination, the response increases by 150 % without inducing poisoning effects. This improvement is attributed to the combined effects of nitrogen doping, high defect concentration, and hierar­chical micro-mesoporosity. Our results demonstrate that molecular design is a powerful strategy to engineer carbon materials with tunable gas-sensing properties, offering new opportunities for next-generation detection technologies.
PB Elsevier
SN 1385-8947
YR 2025
FD 2025-10-15
LK https://hdl.handle.net/20.500.14352/134828
UL https://hdl.handle.net/20.500.14352/134828
LA eng
NO B. Pérez-Román, J. López-Sánchez, M.A. Mazo, Á. Peña, D. G. Calatayud, P. Marín, L. Pascual, R.E. Rojas-Hernández, D. Matatagui, F. Rubio-Marcos, Molecular architecture strategies for UV-enhanced NO2 sensors under ambient conditions, Chemical Engineering Journal 522 (2025) 167301. https://doi.org/10.1016/j.cej.2025.167301.
NO © 2025 The Authors.PSG-466.RYC2022-035912-I.RYC2021-031166-I.PRE2019-0875001234.IND2020/IND-17375.
NO European Commission
NO Ministerio de Ciencia, Innovación y Universidades (España)
NO Agencia Estatal de Investigación (España)
NO Comunidad de Madrid
NO Estonian Research Council
DS Docta Complutense
RD 29 abr 2026