Effect of Anodization Parameter on the Formation of Anodic Nb2O5 in Fluorinated Glycerol

• Published in: Journal of Physics: Conference Series
• Main Author: Alias N.; Rosli S.A.; Hussain Z.; Tan W.K.; Kawamura G.; Matsuda A.; Lockman Z.
• Format: Conference paper
• Language: English
• Published: Institute of Physics 2024
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85215128333&doi=10.1088%2f1742-6596%2f2907%2f1%2f012005&partnerID=40&md5=692933d6530a474b8e0e12ba684ecddc

Niobium (Nb) anodization in buffered electrolyte has certain disadvantages because the oxide that was formed had a low thickness. Therefore, Niobium pentoxide (Nb2O5) was prepared by anodization of Nb in a fluorinated glycerol added to it 15 ml H2O. To investigate the impact of these parameters on the morphology of film production, variations were made to the NH4F concentration, applied voltage, and electrolyte temperature bath. Since a compact oxide was developed in the absence of NHF4, fluoride is necessary to create the oxide structure of nanopores. The surface morphology of the Nb2O5 film was greatly influenced by the applied voltage and electrolyte temperature. The length of the oxide layer decreased and the pore size widened as the applied voltage was increased. On the other hand, the preferential dissolution of the amorphous layer and the crystallization of Nb2O5 in a high temperature (>50 °C) and high voltage (60 V) bath cause the morphology to change from a porous to a microcone shape. The weakly crystalline Nb2O5 peak was confirmed to have formed by the XRD and Raman data. © 2024 Institute of Physics Publishing. All rights reserved.