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

• Published in: Colloid and interface science communications Vol. 33; p. 100201
• Main Authors: Xiong, Ke, Li, Jun, Tan, Lei, Cui, Zhenduo, Li, Zhaoyang, Wu, Shuilin, Liang, Yanqin, Zhu, Shengli, Liu, Xiangmei
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.11.2019
• Subjects: Ag2S; Antimicrobial; Metal-organic framework; Nanocubes; Phototherapy; Antimicrobial; Ag2S; Metal-organic framework; Nanocubes; Phototherapy
• ISSN: 2215-0382; 2215-0382
• DOI: 10.1016/j.colcom.2019.100201

Infectious 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. [Display omitted] •In situ growth of Ag2S nanoparticles on the MOFs derived carbon nanocubes.•Good photothermal and photodynamic performance of Ag2S/NCs•Rapid bacteria-killing efficiency of 97.3% against Staphylococcus aureus under 808 nm laser in 20 min.