Publication date: 30 April 2017
Source:Thin Solid Films, Volume 628
Author(s): Mitsunori Yada, Yuko Inoue, Tomohiro Morita, Shintaro Imamura, Toshio Torikai, Takanori Watari
A silver nanoparticle/silver titanium phosphate–nanocomposite nanobelt thin film was synthesized on a titanium plate by Ag+ ion exchange treatment of a titanium phosphate (Ti2 O3 (H2 PO4 )2 ·2H2 O) nanobelt thin film. Silver nanoparticles with sizes ranging from several nanometers to a few dozen nanometers were regioselectively deposited along the edges of the nanobelts to form the nanocomposite. The coexisting anions in the solution played a crucial role in the Ag+ ion exchange reaction. In the presence of CH3 COO− anions, Ag+ ions were intercalated into the titanium phosphate nanobelts through ion exchange between Ag+ and the H+ in the H2 PO4 group of Ti2 O3 (H2 PO4 )2 ·2H2 O, along with an accompanying change in the crystal structure of titanium phosphate. The silver nanoparticle/silver titanium phosphate–nanocomposite nanobelt thin film showed excellent antibacterial activity against methicillin-resistant Staphylococcus aureus , although the titanium phosphate nanobelt thin film possessed no antibacterial activity.
Source:Thin Solid Films, Volume 628
Author(s): Mitsunori Yada, Yuko Inoue, Tomohiro Morita, Shintaro Imamura, Toshio Torikai, Takanori Watari