Frequency Response Analysis of FAU, LTA and MFI Zeolites Using UV-Vis and Electrochemical Impedance Spectroscopy
Fabian N. Murrieta-Rico,
Joel Antúnez-García,
Rosario I. Yocupicio-Gaxiola,
Armando Reyes Serrato,
Vitalii Petranovskii,
Mufei Xiao,
Oleg Sergiyenko,
Wendy Flores-Fuentes,
Julio C. Rodríguez-Quiñonez
Affiliations
Fabian N. Murrieta-Rico
Ingeniería Mecatrónica, Universidad Politécnica de Baja California, Mexicali 21376, B.C., Mexico
Joel Antúnez-García
Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada 22800, B.C., Mexico
Rosario I. Yocupicio-Gaxiola
Tecnológico Nacional de México/Instituto Tecnológico Superior de Guasave, Carretera a Brecha Sin Número, Ejido Burrioncito, Guasave 81149, SIN., Mexico
Armando Reyes Serrato
Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada 22800, B.C., Mexico
Vitalii Petranovskii
Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada 22800, B.C., Mexico
Mufei Xiao
Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada 22800, B.C., Mexico
Oleg Sergiyenko
Instituto de Ingeniería, Universidad Autónoma de Baja California, Mexicali 21376, B.C., Mexico
Wendy Flores-Fuentes
Facultad de Ingeniería, Universidad Autónoma de Baja California, Mexicali 21376, B.C., Mexico
Julio C. Rodríguez-Quiñonez
Facultad de Ingeniería, Universidad Autónoma de Baja California, Mexicali 21376, B.C., Mexico
Zeolites are porous materials that have cavities interconnected by channels. These crystalline materials are composed of Si-O tetrahedral structures, and according to the assembly of such tetrahedral structures, specific crystalline structures are obtained. Until now, it has been said that there are more than 245 different zeolitic frameworks, and since each one has a specific distribution of pores and cavities, each kind of zeolite has a specific area-to-volume ratio. As a result of the type of zeolite structure, the zeolite can exhibit specific properties, i.e., electrical or optical. Moreover, the physical properties of zeolites can be modified after the inclusion of another chemical species in their structure or in their voids, which can result in tuning a zeolite for specific applications. In this work, synthetic zeolites of types LTA, FAU and MFI are characterized by a number of methods. In particular, the data from UV-Vis spectroscopy are analyzed, and the effect of crystalline structure on properties such as optical bandgap, refractive index, absorption coefficient, incident photon frequency, and extinction coefficient is studied.
