LAUSR.org creates dashboard-style pages of related content for over 1.5 million academic articles. Sign Up to like articles & get recommendations!

Metal-based mesoporous materials and their application as catalysts for the degradation of methyl orange azo dye

Photo from archive.org

Abstract Cobalt, manganese and copper heterogeneous catalysts were prepared using MCM-41 and SBA-16 mesoporous supports. The synthesized materials were characterized by X-ray diffraction, chemical analysis, N2 sorptometry, vibrational spectroscopy and… Click to show full abstract

Abstract Cobalt, manganese and copper heterogeneous catalysts were prepared using MCM-41 and SBA-16 mesoporous supports. The synthesized materials were characterized by X-ray diffraction, chemical analysis, N2 sorptometry, vibrational spectroscopy and transmission electron microscopy. Their catalytic activity was studied in the oxidative degradation of methyl orange (MO) in aqueous solution, at pH 6, using persulfate (PS) anion as oxidant at 30 °C. The level of degradation of the dye was monitored by UV–vis spectroscopy and Total Organic Carbon (TOC) analysis. The synthesized materials showed high activity, being the most effective catalysts those based on Co and Cu, achieving an efficient dye decolorization of >95% until 2 h of reaction. After 24 h of reaction a high degree of mineralization was achieved (>70%). Radical quenching studies showed that sulfate radicals are the main species formed by the catalyst/PS interaction. The supported catalysts exhibited stable performance during the reusability test, reaching an activity greater than 90% up to the fifth evaluated cycle of reuse for copper and cobalt based catalysts.

Keywords: dye; degradation methyl; methyl orange; metal based; spectroscopy; based mesoporous

Journal Title: Journal of environmental chemical engineering
Year Published: 2017

Link to full text (if available)


Share on Social Media:                               Sign Up to like & get
recommendations!

Related content

More Information              News              Social Media              Video              Recommended



                Click one of the above tabs to view related content.