Green Synthesis of ZnO2 Nanoparticles and Their Annealing Transformation Into ZnO Nanoparticles: Characterization and Antimicrobial Activity
Nanoparticles of ZnO2 were synthesized through sol–gel technique using zinc acetate and hydrogen peroxide in aqueous solution exposed to UV irradiation and dried at 100 °C. Using electron microscope techniques, X-ray diffraction, Fourier transform infrared spectroscopy
and thermogravimetric analysis we have studied in detail the structure and morphology of the obtained powders. With annealing treatment of the as-synthesized nanoparticles it was possible to achieve different crystalline structures from pure ZnO2 to pure ZnO nanoparticles. Three
different nanoparticles were selected: the as-synthesized nanoparticles obtained at 100 °C constituted by ZnO2, the sample annealed at 160 °C composed by ZnO2–ZnO mixture and the annealed sample at 220 °C constituted by pure ZnO. Pseudomonas aeruginosa
was employed to evaluate the antimicrobial activity of three selected nanoparticle samples. The inhibition zone was largest for ZnO2 nanoparticles.
Keywords: Antimicrobial Activity; Nanoparticles; ZnO; ZnO2
Document Type: Research Article
Affiliations: 1: Universidad Nacional de Ingeniería, Facultad de Ciencias, Av. Túpac Amaru 210, Lima 25, Perú 2: Universidad Peruana Cayetano Heredia, Facultad de Ciencias y Filosofía, Av. Honorio Delgado 430, Lima 25, Perú 3: Centro de Investigación en Materiales Avanzados S. C., CIMAV, Miguel de Cervantes 120, Chihuahua, CP31136, México
Publication date: 01 September 2016
- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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