title: Synthesis and characterization of MnS2/reduced graphene oxide nanohybrids for with photocatalytic and antibacterial activity.
abstract: A facile one-step hydrothermal route was developed here to prepare MnS2/reduced graphene oxide nanohybrids. The crystal morphologies could be controlled by adjusting the solvent, surfactant, and pH of the precursor solution. X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), UV-Vis absorption spectra, and photoluminescence spectra (PL), were used to characterize the structures of the samples were used to characterize the structures of the samples, and the specific surface area was determined using the Brunauer-Emmett-Teller (BET) method. The thickness of the MnS2nanoparticles and MnS2/reduced graphene oxide nanohybrids were measured to be about 20 and 5nm, respectively. The total pore volume and specific surface area were 0.540 and 1.173cm3g-1and 45.91 and 98.23m2g-1for pure MnS2and MnS2/r-GO hybrids, respectively. Carbophenothion as an insecticide photodegradation was used to estimate the photocatalytic activity of the MnS2/reduced graphene oxide nanohybrids morphologies under UV light. The Carbophenothion hardly decomposed during photolysis over a period of 45min. The rate constant, k value, for the photocatalysis of Carbophenothion by MnS2/reduced graphene oxide nanohybrids under UV light radiation is 0.134min-1. The antibacterial properties of the nanohybrids were evaluated by determining their minimum inhibitory and bactericidal concentrations (MIC and MBC), using a broth microdilution assay for Escherichia coli (E. coli) bacteria. The MIC and MBC values are 4.0 and 32.0μg/mL.
authors.affiliation: Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran, Iran. Electronic address: ali.fakhri88@yahoo.com.
authors.forename: Ali
authors.initials: A
authors.lastname: Fakhri
authors.affiliation: Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran.
authors.forename: Delaram Salehpour
authors.initials: DS
authors.lastname: Kahi
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D002384:Catalysis; D006108:Graphite / Q000737:chemistry*; D017895:Manganese Compounds / Q000737:chemistry*; D008854:Microscopy, Electron / Q000379:methods; D010087:Oxides / Q000737:chemistry; D010782:Photolysis; D013057:Spectrum Analysis; D013440:Sulfides / Q000737:chemistry*
chemical_list: D000900:Anti-Bacterial Agents; D017895:Manganese Compounds; D010087:Oxides; D013440:Sulfides; D006108:Graphite; C041368:manganese sulfide
keywords: Insecticide; MnS(2); Photocatalytic property; UV light