Preparation of Ag Doped Black TiO2 Nanotubes (AgBTNTs) via Electrodeposition

Abstract

Black titanium dioxide nanotubes (BTNTs) has emerged as a promising photocatalyst, garnering attention for its extended absorption spectrum into the visible light range of the solar spectrum. Ag doping is motivated by its ability to create a Schottky barrier at the metal-BTNTs interface. This barrier effectively hinders the recombination of electrons and holes, a critical process that could otherwise diminish the photocatalytic efficacy of  BTNTs. Additionally, the deposition of Ag onto  BTNTs serves to narrow the bandgap, further retarding the recombination of electron-hole pairs. The synergy between BTNTS and silver doping presents a promising avenue for improving photocatalytic technologies and finding applications in various environmental and energy-related domains.