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Updated: May 2, 2026

Author Spotlight: Advancing Bioimaging and Therapy with Functional Nanomaterials
Published on: September 13, 2024
Facile decolorization of methylene blue with flower-like manganese wads
Aili Yang1, Chinpao Huang2, Bingqing Wei3
1Department of Materials Science and Engineering, Tsinghua University, Beijing 100085, China
Abstract:
Flower-like manganese wads (MWs) were synthesized via a simple and inexpensive ultrasonic irradiation method for the first time. MWs were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray and transmission electronic microscopy. The decolorization efficiency of MWs for methylene blue (MB) azo dye was examined as a function of pH, stirring time, MW dosage and initial concentration of the MB solution. Results show that MWs have excellent decolorization performance for MB with a higher efficiency (and without using H2O2 or other devises such as UV light and ultrasonic irradiation) compared to other catalysts, such as the mixture of Mn3O4 and H2O2 (with a maximum decolorization rate of 99.7% in 3 h), ZnS and CdS under light irradiation (with a maximum decolorization rate of 73% in 6 h), and sulfate modified titania under solar radiation (with a maximum decolorization rate of nearly 100% in 4 h).
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