title: Photocatalytic and antibacterial activity of cadmium sulphide/zinc oxide nanocomposite with varied morphology.
abstract: Nanocomposites with multifunctional application prospects have already dragged accelerating interests of materials scientists. Here we present CdS/ZnO nanocomposites with different morphology engineering the precursor molar ratio in a facile wet chemical synthesis route. The materials were structurally and morphologically characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray analysis (EDX) and high-resolution transmission electron microscopy (HRTEM). The growth mechanism of the composite structure with varying molar ratio is delineated with oriented attachment self assemble techniques. Photocatalytic activity of CdS/ZnO nanocomposites with varying morphology were explored for the degradation of rhodamine B (RhB) dye in presence of visible light irradiation and the results reveal that the best catalytic performance arises in CdS/ZnO composite with 1: 1 ratio. The antibacterial efficiency of all nanocomposites were investigated on Escherichia coli, Staphylococcus aureus and Klebsiella pneumonia without light irradiation. Antibacterial activity of CdS/ZnO nanocomposites were studied using the bacteriological test-well diffusion agar method and results showed significant antibacterial activity in CdS/ZnO composite with 1:3 ratio. Overall, CdS/ZnO nanocomposites excel in different potential applications, such as visible light photocatalysis and antimicrobial activity with their tuneable structure.
authors.affiliation: Dept. of Physics and Technophysics, Vidyasagar University, Midnapore 721102, India.
authors.forename: T K
authors.initials: TK
authors.lastname: Jana
authors.affiliation: Dept. of Microbiology, Vidyasagar University, Midnapore 721102, India.
authors.forename: S K
authors.initials: SK
authors.lastname: Maji
authors.affiliation: Dept. of Physics and Technophysics, Vidyasagar University, Midnapore 721102, India.
authors.forename: A
authors.initials: A
authors.lastname: Pal
authors.affiliation: Dept. of Physics and Technophysics, Vidyasagar University, Midnapore 721102, India.
authors.forename: R P
authors.initials: RP
authors.lastname: Maiti
authors.affiliation: Haematology Department, N. R. S. Medical College & Hospital, Kolkata 700014, India.
authors.forename: T K
authors.initials: TK
authors.lastname: Dolai
authors.affiliation: Dept. of Physics and Technophysics, Vidyasagar University, Midnapore 721102, India. Electronic address: kuntal@mail.vidyasagar.ac.in.
authors.forename: K
authors.initials: K
authors.lastname: Chatterjee
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D019187:Cadmium Compounds / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D002384:Catalysis; D004305:Dose-Response Relationship, Drug; D004926:Escherichia coli / Q000187:drug effects; D007711:Klebsiella pneumoniae / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D053761:Nanocomposites / Q000737:chemistry*; D010316:Particle Size; D055668:Photochemical Processes / Q000187:drug effects*; D013211:Staphylococcus aureus / Q000187:drug effects; D013329:Structure-Activity Relationship; D013440:Sulfides / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D013499:Surface Properties; D015034:Zinc Oxide / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D019187:Cadmium Compounds; D013440:Sulfides; C034939:cadmium sulfide; D015034:Zinc Oxide
keywords: Antibacterial activity; CdS/ZnO nanocomposite; Photocatalytic dye degradation