title: Y-doped zinc oxide (YZO) nanoflowers, microstructural analysis and test their antibacterial activity.
abstract: Self-assembled 3D flower-like yttrium-doped zinc oxide (YZO) microstructures composed of nanorods were prepared by hydrothermal-precipitation, and tested their antibacterial activity. The morphological, structural, and compositional properties of YZO nanoflowers were characterized by various techniques, which confirmed a well-crystallized wurtzite hexagonal phase. X-ray photoelectron spectroscopy (XPS) of YZO nanopowder showed the 3d core level spectra of yttrium (Y), which formed by two components at about 158.2 eV (3d5/2) and 160.4 eV (3d3/2). The antibacterial activity of YZO nanoflowers were investigated using both gram-positive and gram-negative microorganisms. Enhancement in antibacterial activity was observed by the incorporation of yttrium (Y: 2 at.%) of nanorod-based-flowers because of increased surface area. The prepared YZO nanocomposite showed potential as an antibacterial agent with applications in controlling the spread of infections and also the ability of fast antibacterial activity which can hinder the re-emergence of infection.
authors.affiliation: Semiconductor Materials and Device Laboratory, Department of Semiconductor Science, Dongguk University-Seoul, 30 Pildong-ro 1-gil, Jung-gu, Seoul 100715, South Korea. Electronic address: sksharma@dongguk.edu.
authors.forename: Sanjeev Kumar
authors.initials: SK
authors.lastname: Sharma
authors.affiliation: Biomass and Waste Energy Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, South Korea.
authors.forename: D V N
authors.initials: DV
authors.lastname: Sudheer Pamidimarri
authors.affiliation: Semiconductor Materials and Device Laboratory, Department of Semiconductor Science, Dongguk University-Seoul, 30 Pildong-ro 1-gil, Jung-gu, Seoul 100715, South Korea. Electronic address: dykim@dongguk.edu.
authors.forename: Deuk Young
authors.initials: DY
authors.lastname: Kim
authors.affiliation: Biomass and Waste Energy Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 305-343, South Korea.
authors.forename: Jeong-Geol
authors.initials: JG
authors.lastname: Na
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects*; D001672:Biocompatible Materials / Q000737:chemistry* / Q000494:pharmacology; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry*; D011208:Powders; D015034:Zinc Oxide / Q000737:chemistry* / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D001672:Biocompatible Materials; D011208:Powders; D015034:Zinc Oxide
keywords: Bacterial growth inhibition and bactericidal activity; Micro-structural properties; Synthesis of YZO nanopowder