Ag2S decorated nanocubes with enhanced near-infrared photothermal and photodynamic properties for rapid sterilization

Publication date: November 2019Source: Colloid and Interface Science Communications, Volume 33Author(s): Ke Xiong, Jun Li, Lei Tan, Zhenduo Cui, Zhaoyang Li, Shuilin Wu, Yanqin Liang, Shengli Zhu, Xiangmei LiuAbstractInfectious diseases caused by bacteria is always a serious problem. In this work, Ag2S nanoparticles decorated nanocubes (Ag2S/NCs) were synthesized, in which NCs were obtained by pyrolyzing the metal-organic frameworks (MOFs) at 800 °C while Ag2S were prepared by a simple ultrasonic process and solvent reaction. The former carbon nanocubes exhibited an excellent photothermal conversion efficiency of 29%, and the latter composite structure exhibited good photodynamic ability. As a consequence, under the 808 nm NIR light irradiation, Ag2S/NCs can produce heat and reactive oxygen species (ROS) within a short time, which endowed the composites enhanced antibacterial properties of 97.3% against Staphylococcus aureus in 20 min. The cell test in vitro also displayed that these composites had good biocompatibility.Graphical abstract
Source: Colloids and Interface Science Communications - Category: Nanotechnology Source Type: research