Sodium titanate nanotubes (NaTiNTs) were synthesized in situ and doped with
cerium tungstate [Ce2(WO4)3] in an aqueous solution to obtain cerium tungstate-
doped titanate nanotubes (CWTiNTs). To assess the effects of doping, we
conducted a comprehensive study of the structural and optical properties of the
titanate nanotubes. Structural and spectroscopic characterizations confirmed
the preservation of the nanotubular morphology in the presence of [Ce2(WO4)3]
phases, verifying successful doping. The optical properties were investigated
using UV-vis absorption spectroscopy, revealing a significant reduction in the
band gap and an increase in Urbach energy for the CWTiNTs compared to
NaTiNTs. Furthermore, the CWTiNTs demonstrated promising photocatalytic
performance, achieving 73.84% degradation of a high-concentration antibiotic
solution while exhibiting excellent reusability. These findings highlight the
potential of cerium tungstate-doped titanate nanotubes as effective materials for
photocatalytic pharmaceutical applications.