چكيده لاتين
Membranes are among the most important separation tools in science and engineering and have attracted considerable attention in recent decades due to their wide applications in water purification, materials separation, biosensors, and energy systems. In this context, natural membranes have gained increasing interest because of their availability, biocompatibility, and low cost. In the present study, the inner membrane of chicken eggshell was investigated as a natural, flexible, and biodegradable biomembrane, with a focus on its electrochemical properties and ion transport behavior.
The structural characteristics of the membrane were examined using field emission scanning electron microscopy (FE-SEM), which revealed a fibrous network with irregular interconnections and pores ranging from the micrometer to nanometer scale. Fourier transform infrared spectroscopy (FTIR) was used to identify the chemical composition of the membrane, confirming the presence of protein-based functional groups responsible for its mechanical properties and ion adsorption capability. Electrochemical measurements and current–voltage (I–V) curves demonstrated that the eggshell membrane exhibits selective ion transport behavior, showing higher conductivity for monovalent cations such as K⁺, Li⁺, and Na⁺ compared to divalent cations such as Mg²⁺ and Ca²⁺.
The observed ionic selectivity suggests the presence of biological ion transport mechanisms similar to those found in natural cellular membranes. The results indicate that, in addition to its biodegradability and mechanical stability, the eggshell membrane can be considered a low-cost and accessible alternative to synthetic membranes for certain research applications. Potential applications of this biomembrane include water purification and desalination processes, development of biosensors, and utilization in energy storage and conversion systems. Furthermore, the ion transport capability of the eggshell membrane was investigated for the first time, and its potential application in glucose sensor design is proposed.
