Obtaining and characterization of doped lanthanum manganite through an unconventional method

Adina Căta, Antonina Lazăr, Ioana M.C. Ienașcu, Nick Samuel Țolea, Daniel Ursu, Anamaria Dabici, Paula Sfîrloagă

Volume 30, Issue 2;
Pages: 136-141; 2024
ISSN: 2069-0053 (print), Agroprint;
ISSN (online): 2068-9551

Considering the growing concern for food safety, the development of fast detection methods with high sensitivity and repeatability of specific food constituents is a huge necessity. In this regard, the electrochemical methods can be an effective way due to certain advantages such as low cost, fast response signal, high sensitivity and ease of use. The detection efficiency of electrochemical sensors mainly depends on the electrochemical characteristics of the electrode materials. Perovskite-based materials are ideal candidates for the development of electrochemical sensors due to their excellent catalytic activity and redox properties. We report herein the synthesis, morpho-structural properties, and electrical performance assessment of Ca doped lanthanum manganite by ultrasonic method with immersed sonotrode in the reaction medium. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses were performed on the synthesized samples. The results indicated a well-crystallized perovskite-type structure, and 29 nm average crystallite sizes. The electron microscopy images showed that the presence of the dopant influenced the surface morphology.