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Author Manivel, Arumugam ♦ Lee, Gang-Juan ♦ Chen, Chin-Yi ♦ Chen, Jing-Heng ♦ Ma, Shih-Hsin ♦ Horng, Tzzy-Leng ♦ Wu, Jerry J.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ NANOSCIENCE AND NANOTECHNOLOGY ♦ AZO DYES ♦ CATALYSTS ♦ COMPARATIVE EVALUATIONS ♦ FIELD EMISSION ♦ MICROWAVE RADIATION ♦ MOLYBDENUM OXIDES ♦ NANOPARTICLES ♦ NANOSTRUCTURES ♦ SCANNING ELECTRON MICROSCOPY ♦ SPECTRAL REFLECTANCE ♦ SURFACE AREA ♦ SYNTHESIS ♦ TRANSMISSION ELECTRON MICROSCOPY ♦ X-RAY DIFFRACTION
Abstract Highlights: • Synthesis of one-dimensional MoO{sub 3} nanostructures using hydrothermal, microwave, and sonochemical methods. • Sonochemical synthesized MoO{sub 3} presents the best efficiency for the dye removal by catalytic ozonation. • Efficient environmental remediation process. - Abstract: One-dimensional molybdenum trioxide nanostructures were prepared in three different approaches, including thermal, microwave, and sonochemical methods. The physicochemical properties of the obtained MoO{sub 3} nanoparticles were investigated by diffused reflectance spectroscopy, X-ray diffraction analysis, field emission scanning electron microscopy, high resolution transmission electron microscopy, and Brunauer–Emmett–Teller surface area analysis. Among the methods as investigated, sonochemical synthesis gave well-dispersed fine MoO{sub 3} nanoparticles compared with the other approaches. All the synthesized MoO{sub 3} nanostructures were examined for the catalytic ozonation to degrade azo dye in aqueous environment. Different performances were obtained for the catalyst prepared in different methods and the catalytic efficiencies were found to be the order of sonochemical, microwave, and then thermal methods. The sonochemical MoO{sub 3} catalyst allowed the total dye removal within 20 min and its good performance was justified according to their higher surface area with higher number of active sites that provide effective dye interaction for better degradation.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-02-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 62


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