Photoelectrochemical performance of BiOI/TiO₂ nanotube arrays (TNAs) p-n heterojunction synthesized by SILAR-ultrasonication-assisted methods.

ABSTRACT: In order to extend the visible region activity of titania nanotube array (TNAs) films, the successive ionic layer adsorption and reaction (SILAR)-ultrasonication-assisted method has been used to prepare BiOI-modified TiO₂ nanotube arrays (BiOI/TNAs). The band gap of BiOI/TNAs for all the variations reveals absorption in the visible absorption. The surface morphology of BiOI/TNAs is shown in the nanoplate, nanoflake and nanosheet forms with a vertical orientation perpendicular to TiO₂. The crystalline structure of BiOI did not change the structure of the anatase TNAs, with the band gap energy of the BiOI/TNAs semiconductor in the visible region. The photocurrent density of the BiOI/TNAs extends to the visible-light range. BiOI/TNAs prepared with 1 mM Bi and 1 mM KI on

SUBMITTER: Kasuma Warda Ningsih S 

PROVIDER: S-EPMC10300691 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature