International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 04 Special Issue: 09 | Sep -2017
p-ISSN: 2395-0072
www.irjet.net
One Day International Seminar on Materials Science & Technology (ISMST 2017) 4th August 2017 Organized by
Department of Physics, Mother Teresa Women’s University, Kodaikanal, Tamilnadu, India
Mechanistic investigation of FeO/MnO/ZnO nanocomposites for UV light driven photocatalytic performance Shanmugam Vignesh1, M. Sivakami2, P. Muniyappan3, Jeyaperumal Kalyana Sundar4 1,2,3,4 Materials
science Laboratory, Department of Physics, Periyar University, Salem – 636 011, Tamil Nadu, India *jksundar50@gmail.com, vigneshattur1@gmail.com
----------------------------------------------------------------------------------***-------------------------------------------------------------------------------Abstract: The FeO/MnO/ZnO nanocomposites (FMZ NCs)) manganese oxide (MnO), copper oxide (CuO) etc.,) doping in which were prepared by ultrasonication assisted precipitation ZnO will be moral results in improved optical, and catalytic method and investigation of their mechanical and properties also increases prospects for their utilization. photocatalytic activity were analysed. 10M at % of Fe and Mn metal ions have mixed together ZnO nanomaterial to enhance 2. Synthesis the optical, luminescence and photocatalytic properties studied via XRD, SEM, EDX, UV-Vis DR Spectroscopy, PL Spectroscopy In Precursors of Zinc nitrate (0.1M), iron II nitrate (0.01M) and photocatalytic performance with their results are discussed. and manganese acetate (0.01M) and 0.1g of polyvinyl Optical bandgap should be blue shift from 3.18 to 3.04eV, and pyrrolidone (PVP) were dissolved in 200 ml of DI water and broad photoluminescence (PL) peak appears around 490nm 50ml ethanol through continuous stirring for 10 hours. were corresponds to blue emission region. The photocatalytic Simultaneously, 0.3M of NaOH is added (pH=9) to the activity of the as-prepared FMZ NCs for degradation of MB dye particular solution for which resulting in a dark precipitate under the UV light irradiation were examined and the FMZ NCs [3]. This solution was heated by microwave oven at 450W for will be time taken of 300 mins in reaches of degradation has 20mins with their ultrasonicated in 30 mins for getting a 90%. The FMZ of Photocatalytic reaction kinetics will be high dispersing nano materials. The obtained product was placed compare than PZ. in a hot air oven at 120oC for 8 hours, finally it is moved to anneal in the furnace at 600oC for 2.5hr to stabilize [2] the Keywords: Photocatalyst, Blue emission, Nanocomposites, FMZ nanocomposites. A similar procedure was followed to UV-light, Degradation synthesis of with Fe, and other Mn also undoped ZnO, and it’s labelled as follows; (Fe: Mn-0M%: ZnO (PZ), Fe-0.01M%: ZnO (FZ), Mn-0.01M%: ZnO (MZ) and Fe-0.01M%: Mn-0.01M%: 1. Introduction ZnO (FMZ)). Nanostructured semiconducting metal oxides are being widely utilized in the fields of sensors, catalysis optical nano devices, electronics, and photoactive properties. Being a wide band gap and multi-disciplinary among the semiconductor, Zinc oxide (ZnO) is one of the most widely investigated semiconductor photocatalyst owing to its availability, nontoxic nature, stability, good resistance to photo corrosion and biological stability. However, to efficiently use ZnO in practice as an air and water decontamination agent, wide bandgap material (~3.37 eV), large excitonic binding energy (60 meV) and can only be activated by UV light with a wavelength equal or lower than 385 nm to trigger the e−/h+ separation and its due to easy recombination together [1, 2]. In addition of effective metal ions (tin oxide (SnO), iron oxide (FeO), © 2017, IRJET
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