Obeso Juan L, López Cervantes Valeria B, Flores Catalina V, García-Carvajal Celene, Garduño-Albino Carlos E, Peralta Ricardo A, Trejos Víctor M, Huerta Arcos L, Ibarra Ilich A, Solis-Ibarra Diego, Cordero-Sánchez Salomón, Portillo-Vélez Nora S, Esparza-Schulz J Marcos
Instituto Politécnico Nacional, CICATA U. Legaria, Laboratorio Nacional de Ciencia, Tecnología y Gestión Integrada del Agua (LNAgua), Legaria 694, Irrigación, 11500, Miguel Hidalgo, CDMX, Mexico.
Laboratorio de Fisicoquímica y Reactividad de Superficies (LaFReS), Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior s/n, CU, Coyoacán, 04510, Ciudad de México, Mexico.
Dalton Trans. 2024 Jul 23;53(29):12208-12214. doi: 10.1039/d4dt01283f.
The development of adsorbents for air pollutant remediation and effective monitoring is of interest. Then, the effect of the APTES functionalization ratio on the impact of the adsorption and detection of SO molecules was evaluated. The higher APTES functionalization material (SBA-15_6.1APTES) shows a high uptake of 1.15 mmol g at 0.001 bar and 298 K. Fluorescence, time-resolved photoluminescence, and quantum yield experiments revealed a turn-on effect specifically for SO molecules, indicating high selectivity, suggesting host-to-guest energy transfer. Attractively, XPS measurement provided an understanding of the mechanism, suggesting hydrogen bonding and dipole-dipole interactions as the main interactions between SO molecules and SBA-15_6.1APTES. DFT calculations were performed to confirm these interactions. Furthermore, this study highlights the application of SBA-15 materials with different amino modifications for SO treatment and provides insight into the interaction mechanism using experimental techniques.
