Synthesis of MoO{sub 3} nanoparticles for azo dye degradation by catalytic ozonation

Journal Article · Sun Feb 15 00:00:00 EST 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2014.11.016· OSTI ID:22420813

Manivel, Arumugam; Lee, Gang-Juan ^[1]; Chen, Chin-Yi ^[2]; Chen, Jing-Heng; Ma, Shih-Hsin ^[3]; Horng, Tzzy-Leng ^[4]

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1. Department of Environmental Engineering and Science, Feng Chia University, Taiwan (China)
2. Department of Material Science and Engineering, Feng Chia University, Taiwan (China)
3. Department of Photonics, Feng Chia University, Taiwan (China)
4. Department of Applied Mathematics, Taiwan (China)

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.

• OSTI ID: 22420813
• Journal Information: Materials Research Bulletin, Vol. 62; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 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