title: Green tide deactivation with layered-structure cuboids of Ag/CaTiO3 under UV light.
abstract: In this work, an alternative to deactivate noxious green tide Tetraselmis suecica in the short-term is proposed by employing Perovskite-like cube-shaped, crystalline CaTiO3 semiconductors functionalized with atomic silver nanoparticles. CaTiO3 was prepared by a microwave-assisted hydrothermal method and then Ag(0)NPs (1 wt% of CaTiO3), were added by the photoreduction method. The XRD results show that crystalline CaTiO3 has an orthorhombic unit cell with a Perovskite-like structure. Images obtained by FESEM and HRTEM microscopies show well-faceted CaTiO3 rectangular prismatic morphology functionalizated with silver nanoparticles ≈ 13.5 nm. XPS and EDS-FESEM has confirmed the composition of CaTiO3 and silver occurring mainly as reduced metal. The UV inactivation of noxious T. suecica with Ag/CaTiO3 nanocomposites formed on bare materials results in complete deactivation of the algae in 12 min. The direct contact between harmful algae and Ag/CaTiO3 nanocomposite is necessary to deactivate the algae and inhibits algae viability.
authors.affiliation: Global Research Laboratory, Sun Moon University, Galsan-Ri, Tangjung-Myon, Asan Chungnam 336-708, South Korea.
authors.forename: Soo-Wohn
authors.initials: SW
authors.lastname: Lee
authors.forename: L M
authors.initials: LM
authors.lastname: Lozano-Sánchez
authors.forename: V
authors.initials: V
authors.lastname: Rodríguez-González
mesh_terms: D000890:Anti-Infective Agents / Q000737:chemistry / Q000494:pharmacology* / Q000528:radiation effects; D017610:Calcium Compounds / Q000737:chemistry / Q000528:radiation effects*; D000460:Chlorophyta / Q000187:drug effects* / Q000528:radiation effects*; D053761:Nanocomposites / Q000737:chemistry / Q000528:radiation effects; D010087:Oxides / Q000737:chemistry / Q000528:radiation effects*; D012834:Silver / Q000737:chemistry / Q000494:pharmacology* / Q000528:radiation effects; D014025:Titanium / Q000737:chemistry / Q000528:radiation effects*; D014466:Ultraviolet Rays
chemical_list: D000890:Anti-Infective Agents; D017610:Calcium Compounds; D010087:Oxides; C059910:perovskite; D012834:Silver; D014025:Titanium
keywords: CaTiO(3) cuboids; Green tide; Noxious Tetraselmis suecica; Peroskite-like; Silver nanoparticles