Synthesis CaTiO<sub>3</sub>: Er<sup>3+</sup> Films on Titanium by Anodization and Hydrothermal Method for Drug Delivery Applications

To address the limitations of traditional drug delivery, CaTiO 3 :Er 3+ film (CTO:Er) is studied as a promising material for drug delivery systems. With regard to the excellent biocompatibility and physicochemical properties, CTO:Er prepared by a facile electrochemical anodizing process combined with a hydrothermal method has been used to fabricate new drug-releasing implants for localized drug delivery. This review discusses the development of CTO:Er applied in localized drug delivery systems, which uses nano drug curcumin for testing. Furthermore, with the special structure of the material, it meets the needs of drug absorption and delivery. Finally, the review concludes with the advances of CTO:Er for controlled drug delivery and corresponding prospects in the future.