Sebastián Suárez Schmidt
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Research Interests
Sebastián Suárez Schmidt has a total of 9 co-authors. Here are the top co-authors by number of shared publications:
- Carmen L. Metzler
Department of Chemistry, University of Puerto Rico, Rio Piedras, San Juan, PR 00931, USA
1 shared publication - Dalice Pinero Cruz
University of Puerto Rico-Río Piedras
1 shared publication - Danilo Barrionuevo
Department of Mathematics-Physics, University of Puerto Rico at Cayey, Cayey 00736, Puerto Rico
1 shared publication - Jean C. González Espiet
Department of Chemistry, University of Puerto Rico, Rio Piedras, San Juan, PR 00931, USA
1 shared publication - John A. Cruz Lozada
Department of Chemistry, University of Puerto Rico, Rio Piedras, San Juan, PR 00931, USA
1 shared publication - Luis F. Fonseca
Faculty of Natural Sciences, University of Puerto Rico, Río Piedras Campus, San Juan 00931, Puerto Rico
1 shared publication
Latest Publications
- Open Access
- 7 March 2025
- Published by MDPI AG in Chemosensors
- Vol. 13 (3) , 95
Gas Sensitivity Improvements of Nanowire Hexadecafluorinated Iron Phthalocyanines by Thermal Vacuum Annealing
In the quest for more sensitive gas sensors, researchers have studied how heating the sensors, using UV light, and thermally annealing sensors improve performance. During thermal annealing, the heating process can improve the crystallinity of the material while also increasing the electrode and sensing material interactions to create more available active sites and thus improve sensor performance. Hexadecafluorinated iron (II) phthalocyanine (FePcF16) nanowires have high sensitivity towards NH3 selectively, and thermally annealing the NWs after the deposition can further improve the sensing response and recovery. For this reason, the effect of annealing FePcF16 NWs at different temperatures was studied to optimize these systems. In this work, FePcF16 NWs were synthesized using physical vapor deposition (PVD) to deposit on interdigitated electrodes. The NWs were characterized by SEM, EDS, PXRD, FTIR, and Raman spectroscopy to confirm their purity. The sensors were annealed at different temperatures, inserted into a gas sensing chamber, and exposed to 1 ppm NH3 in air, and the electrical current was measured. The results show that the optimized FePcF16 NWs have excellent sensing properties, with a 58% increase in response towards NH3 after a stepwise annealing at 300 °C confirming these systems are good prospective candidates for sensing NH3 at room temperature.
- 7 March 2025
- Published by MDPI AG in Chemosensors
- Vol. 13 (3) , 95
Open AccessGas Sensitivity Improvements of Nanowire Hexadecafluorinated Iron Phthalocyanines by Thermal Vacuum Annealing
In the quest for more sensitive gas sensors, researchers have studied how heating the sensors, using UV light, and thermally annealing sensors improve performance. During thermal annealing, the heating process can improve the crystallinity of the material while also increasing the electrode and sensing material interactions to create more available active sites and thus improve sensor performance. Hexadecafluorinated iron (II) phthalocyanine (FePcF16) nanowires have high sensitivity towards NH3 selectively, and thermally annealing the NWs after the deposition can further improve the sensing response and recovery. For this reason, the effect of annealing FePcF16 NWs at different temperatures was studied to optimize these systems. In this work, FePcF16 NWs were synthesized using physical vapor deposition (PVD) to deposit on interdigitated electrodes. The NWs were characterized by SEM, EDS, PXRD, FTIR, and Raman spectroscopy to confirm their purity. The sensors were annealed at different temperatures, inserted into a gas sensing chamber, and exposed to 1 ppm NH3 in air, and the electrical current was measured. The results show that the optimized FePcF16 NWs have excellent sensing properties, with a 58% increase in response towards NH3 after a stepwise annealing at 300 °C confirming these systems are good prospective candidates for sensing NH3 at room temperature.