Open AccessRoom Temperature Synthesis of Monodisperse ZnO Nanoparticles Using Ultrasonically Atomized Precursor Mist in Simple Chemical Route
Publication year - 2019
Publication title -
international journal of nanotechnology and nanomedicine
Language(s) - English
Resource type - Journals
ISSN - 2476-2334
DOI - 10.33140/ijnn.04.02.02
Subject(s) - zinc , sodium hydroxide , zinc hydroxide , dispersity , chloride , molar concentration , materials science , nanoparticle , diffractometer , hydroxide , nuclear chemistry , scanning electron microscope , chemistry , chemical engineering , inorganic chemistry , nanotechnology , organic chemistry , metallurgy , polymer chemistry , composite material , engineering
Monodisperse zinc oxide (ZnO) nanoparticles were synthesized using ultrasonically atomized precursor mist in simplechemical route at low temperature. Analytical grade sodium hydroxide and zinc chloride were dissolved in 100 mlmethanol. Zinc chloride precursor solution was converted into very fine mist (atomized) using a nozzle (Sono-TekCorporation, U.S.A.) operated at ultrasonic frequency of 120 KHz. Fine mist droplets were added slowly (50ml/hour) into sodium hydroxide solution in 2 hours. The NaOH solution in beaker turned slowly into white product dueto addition of zinc chloride. The white product was kept in constant temperature bath at 90°C for 3 hours. The whiteproduct was washed five times using double distill water and dried in oven for 2 hours. Different powder samples weresynthesized using same procedure by changing the molarity of sodium hydroxide keeping the molarity of zinc chlorideand other preparative conditions same. The structural, microstructural, thermal and optical properties of fine powderswere analyzed using X Ray Diffractometer, Scanning Electron Microscopy, Simultaneous Thermal Analyzer, UV-VisSpectroscopy and Photoluminescence Spectroscopy. Fine ZnO nanorods, elongated and spherical nanoparticles wereobserved due to change in molarity of NaOH. The results are discussed and interpreted.