Mesoporous oxide films grown on Sn foil using various anodizing modes in alkaline electrolyte

• Main Authors: Vasilyeva Tatyana, Uvarov Nikolai
• Format: Article
• Language: English
• Published: EDP Sciences 2021-01-01
• Series: MATEC Web of Conferences
• Online Access: https://www.matec-conferences.org/articles/matecconf/pdf/2021/09/matecconf_rkfm2021_01050.pdf

The mesoporous structures of tin oxide were obtained by a simple method of one-stage electrochemical anodizing of Sn foil in 1M NaOH in various anodizing modes. Anodizing in the pulse potentiostatic mode allowed determination of actual value of the voltage drop on the anode. For the first time the possibility of obtaining mesoporous oxide films on the surface of tin using galvanostatic mode of anodizing was demonstrated. It was found that the surface morphology of the obtained tin oxide layers is strongly dependent on the anodizing mode. Based on the data obtained, a two-stage mechanism was proposed for the growth of porous structures on the surface of tin in the galvanostatic mode including initial formation of the layer of SnO·xH2O which is subsequently oxidized to SnO2·xH2O mesoporouslayer.