By a News Reporter-Staff News Editor at Science Letter -- Research findings on Photocatalytics are discussed in a new report. According to news reporting originating from Selangor, Malaysia, by NewsRx correspondents, research stated, "In this article, ZnO nanogranules were synthesised rapidly by the thorough solid state mixing of nitrate precursor with citric acid followed by aging and calcination at two different temperatures of 400 degrees C and 600 degrees C. Here, citric acid played a superior role in the development of porous ZnO nanostructures. The ZnO nanogranules obtained in this way were characterised by different techniques."
Our news editors obtained a quote from the research from the University of Kebangsaan, "X-ray diffraction patterns indicated a hexagonal wurtzite structure of ZnO with high crystallinity and nanocrystalline size. Scanning and transmission electron microscopy images indicated the uniformly well separated hexagonal morphology of the ZnO nanoparticles, with granular shape. BET surface area-porosity analysis confirmed the presence of a mesoporous network in both samples, with high surface area and a monomodal pore size distribution. Room temperature Photoluminescence spectra of the samples exhibited characteristic blue and green emission bands in accordance with the calcination temperature. The photocatalytic performance of the ZnO nanogranules was studied using methylene blue degradation and found that the ZnO prepared at 400 degrees C exhibited higher photocatalytic activity due to its high surface area and more oxygen vacancies."
According to the news editors, the research concluded: "High concentrations of several hazardous dye pollutants were effectively degraded, when the solution was passed over 50 mg of ZnO nanogranules under UV-light illumination."
For more information on this research see: Facile solid state synthesis of ZnO hexagonal nanogranules with excellent photocatalytic activity. Applied Surface Science, 2014;292():520-530. Applied Surface Science can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Applied Surface Science - www.elsevier.com/wps/product/cws_home/505669)
The news editors report that additional information may be obtained by contacting M. Pudukudy, Univ Kebangsaan Malaysia, Fac Engn & Built Environm, Dept. of Chem & Proc Engn, Bangi 43600, Selangor, Malaysia (see also Photocatalytics).
Keywords for this news article include: Asia, Selangor, Malaysia, Photocatalyst, Nanotechnology, Emerging Technologies
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