ABSTRACT
Various materials are developed and applied for drug delivery systems (DDS). Of these, photocatalytic materials are considered one of the attractive materials for DDS. Because titanium dioxide used as a photocatalyst is safe for living organisms and can be prepared the various modifications. Therefore, it is possible to apply some drugs or antibodies for the surface of photocatalytic materials. These materials can be delivered and be concentrated to targeting organs and cells by the combination with magnetic nano particles. Further, it is possible not only to control the drug releasing by photocatalytic reaction but also to kill target cells directly by photocatalytic reaction. In addition to the possibility of photocatalysts as DDS materials, photocatalyst is also the attractive materials as antibacterial/antiviral materials. The infection of SARS-CoV-2 is the serious problem in the world. Then, we introduce the antibacterial/antiviral test method using photocatalytic materials and its application including in water purification, because we expect to apply for antibacterial/antiviral. Thus, this paper introduces the potential of photocatalytic materials as follows;the potential of photocatalytic materials as DDS and cancer treatments, test methods for antibacterial/antiviral effects by photocatalytic reactions, the potential of photocatalytic materials as medical applications, the inactivation of SARS-CoV-2 by photocatalytic reaction, and water purification.