Peculiar Role of the Metallic States on the Nano‐MoS₂ Ceramic Particle Surface in Antimicrobial and Antifungal Activity

Abstract

This study concerns the interactions of two chemically different materials hBN (covalent-ionic bonds) and MoS 2 (covalentionic and dispersive bonds) with bacteria and fungi. The materials used in the study were in the form of micro-and nanocrystals. Countable inactivation of microorganisms (Staphylococcus aureus, Sarcina lutea, Aspergillus niger, Escherichia coli) took place only in the case of MoS 2 nanosheets. The authors of the study suppose that the bioactivity of nano-MoS 2 can be associated with the presence of "metallic states," which are present only on their surface.

Synthesis and Bioactivity of Reduced Graphene Oxide/Alumina‐Noble Metal Nanocomposite Flakes

“…3) and were slightly higher in comparison with the same nanoparticles deposited on the surface of RGO. It should be noted that the morphology of the nanoparticles in general was similar to pure Al 2 O 3 nanoparticles previously obtained by us, 26,27 and due to enable examining of Me particles embedded in the Al 2 O 3 nanoparticles, the TEM analysis must be employed.…”

Robust Denaturation of Villin Headpiece by MoS2 Nanosheet: Potential Molecular Origin of the Nanotoxicity

“…It is believed that molybdenum disulfide might share similar physicochemical properties with graphene, and can potentially replicate graphene’s success in biomedical applications. Recent studies indicate that it has strong antimicrobial and antifungal activity 37 38 . Meanwhile, a field effect biosensor has been proposed for tumor marker proteins using its unique direct band gap 39 .…”

Investigating the Influence of MoS2 Nanosheets on E. coli from Metabolomics Level

“…According to the method reported previously [26], field emission scanning electron microscopy combined with energy dispersive spectrometry (FE-SEM, Hitachi S-4800) was utilized to determine the surface morphology and relative abundance of chemical elements of the MoS 2 samples. In addition, the MoS 2 samples were analyzed using a HR800 Raman Microscope (Horiba Jobin Yvon, France) and focalized using a 40 × objective with an excitation wavelength of 514 nm, adjusting the exposure time to acquire the correct spectrum.…”

“…Marek Kostecki et al . have demonstrated that MSNs have antibacterial and antifungal properties by SEM observation [26]. These preliminary experiments gave new insights useful for assessing the microbial toxicity of MoS 2 .…”