Browsing by Author "Quezada, Diego"
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- ItemElectrocatalytic Transformation of Carbon Dioxide into Low Carbon Compounds on Conducting Polymers Derived from Multimetallic Porphyrins(2015) Dreyse, Paulina A.; Honores Sotelo, Jessica Scarlet; Quezada, Diego; Isaacs Casanova, Mauricio
- ItemEnhanced Hydrogen Peroxide Sensing Based on Tetraruthenated Porphyrins/Nafion/Glassy Carbon-modified Electrodes via Incorporating of Carbon Nanotubes(2015) Calfuman, Karla; Quezada, Diego; Isaacs Casanova, Mauricio; Bollo, Soledad
- ItemQuick and Easy Modification of Glassy Carbon Electrodes with Ionic Liquid and Tetraruthenated Porphyrins for the Electrochemical Determination of Atrazine in Water(2019) Calfuman, Karla; Honores, Jessica; Isaacs, Mauricio; Quezada, Diego; Valdebenito, Javier; Urzua, MarcelaAtrazine is a pesticide used to control broadleaf weeds, however its wide distribution and its high persistence in the soil and in surface waters has resulted in a public and environmental health problem. Present results shows the design, construction and characterization of glassy carbon electrodes modified with tetrarutenated metalloporphyrin (M=Ni (II) and Zn (II)) and 1-butyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, BMIMNTF2. The modification was reproducible and sensitive for the electrochemical detection of atrazine in neutral media. The detection limit was 230 nM when using GC/BMIMNTF2/ZnTRP and 540 nM with GC/BMIMNTF2/NiTRP, meaning that his methodology can be a feasible and inexpensive way to detect atrazine in trace levels.
- ItemStudy of the reaction mechanism in hydrogen production using metal-free Schiff base as a catalyst(2023) Muena, Juan Pablo; Zamora, Pedro Pablo; Bieger, Klaus; Soliz, Alvaro; Haribabu, Jebiti; Aguirre, Maria Jesus; Marquez, Paulina; Quezada, Diego; Honores, JessicaUnderstanding the hydrogen evolution reaction and its mechanism is crucial for numerous practical applications in the realm of green energy. The development and discovery of new technologies or alternatives hold great significance in generating hydrogen at a low cost. In this study, we propose a novel catalyst, N, N'-bis(2-hydroxy1-naphthaldehyde)-o-phenylenediamine ([naph]2-o-ph), which is a Schiff base, for hydrogen production. The novelty lies in utilizing the organic Schiff base system and the proposed mechanism for hydrogen evolution, involving protonation and electron exchange on the Schiff base. Both experimental and theoretical results highlight the high capability of the Schiff base in generating hydrogen, providing valuable insights for potential applications in water electrolysis.
- ItemSynthesis of cyclic carbonates from CO2 and epoxide catalyzed by Co, Ni and Cu complexes in ionic liquids(2019) Honores Sotelo, Jessica Scarlet; Quezada, Diego; Chacón, Gustavo; Martínez‑Ferraté, Oriol; Isaacs Casanova, Mauricio Alejandro
- ItemZinc Stannate as anode and Pyrrolidinium-Based Room Temperature Ionic Liquid as electrolyte for Lithium-ion Cells(2021) Quezada, Diego; Honores, Jessica; Ruiz-Leon, DomingoWith the aim to design safer batteries, pyrrolidinium-based room temperature ionic liquids (RTIL) have been used as electrolytes in Li-ion batteries using zinc stannate as the anodic material. The lithium diffusion coefficients were calculated using Electrochemical Impedance Spectroscopy (EIS) data and were 2.37 x 10(-12) cm(2)s(-1) for MPPyrTFSI and 1.29 x 10(-12) cm(2)s(-1) for BMPyrTFSI. The performance of the device strongly depended on the cation chemical structure, yielding different specific capacity values of 306.3 mAhg(-1) for BMPyrTFSI and 269.2 mAhg(-1) for MPPyrTFSI.