- To serve as an important medium for the publication of original research in the field of medical science and health research, thus filling gaps in health knowledge for effective utilization of research findings
- To impart current medical knowledge and updated scientific information obtained from research to health professionals for better and appropriate health care management
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Archives 2015
Myanmar Health Sciences Research Journal
Volume 27, Number 3
TITLE: Removal of Dye in Waste Water by using the Prepared Mn3O4 Nanoparticles
AUTHOR: Myat Myat Thaw, Myat Thiyi Kyaw & Kyaw Naing
SOURCE: Myanmar Health Sciences Research Journal, Vol. 27, No. 3, 2015
ABSTRACT: Preparation of Mn3O4 nanoparticle from KMnO4 as manganese source and ethyleneglycol was performed by using hydrothermal method. Twelve characteristic peaks of Miller indices (101, 112, 200, 100, 211, 202, 004, 220, 105, 321, 224 and 400) were found in X-ray diffraction (XRD). According to the lattice parameters, crystal structure of Mn3O4 nanoparticle was found to be tetragonal by XRD. Average crystallite size of the prepared Mn3O4 nanoparticle is 25.60 nm. It was found that the percent crystallinity of Mn3O4 nanoparticles was 95.85%. According to Scanning Electron Microscope (SEM) micrograph, Mn3O4 nanoparticles seems tetragonal structure. Application of Mn3O4 nanoparticles was carried out for photode-composition effect. Photodecomposition properties such as effect of contact time and effect of dosage on Mn3O4 nanoparticles were determined in this work. Under the daylight, the decomposition percent of bromocresol green solution was found to be 10.28% and the maximum decomposition percent of this solution increased (48.78%) for 3 hours under the light of 60 watt electric bulb, the photodecomposition of bromocresol green solution started after 15 minutes (11.16%) and increased to (58.96%) for 3 hours by using 0.3 gm Mn3O4 nanoparticles. The maximum decomposition percent of bro-mocresol green solution was observed to be 57.85% under the daylight and 67.92% under the 60 watt electric bulb by using 0.5 dosage. Mn3O4 nanoparticles can be applied for the removal of dyes in waste water samples. It was observed that colour of the textile dyes solution decreased signi-ficantly after treatment with Mn3O4 nanoparticles for 2 hours.
SUBJECT HEADINGS: Mn3O4 nanoparticles, XRD, SEM, Photodecomposition, Bromocresol green
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