Preparation of MnO2@PP MB for Organic Dyes Removal 


Vol. 26,  No. 3, pp. 1265-1280, Mar.  2025
10.1007/s12221-025-00885-5


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  Abstract

The removal of organic dyes from wastewater using manganese dioxide (MnO2) and its composites has garnered significant attention, but recycling them remains challenging. In this study, MnO2 was combined with polypropylene melt-blown nonwoven material (PP MB) in a simple way to prepare a composite material, which makes MnO2 easy to be recycled and reused. MnO2 with sea urchin-like structure were synthesized using a hydrothermal method and subsequently anchored onto the surface of PP MB modified by polydopamine (PDA) in various loading concentration, resulting in the preparation of MnO2@PP MB for removing organic dyes from wastewater. The size of the synthesized MnO2 is about 6 μm and its specific surface area is 21.73 m2/g. When the loading concentration of MnO2 is 1 mg/mL, the pH of adsorption solution is 3, and the adsorption solution temperature is 25 °C, the removal efficiencies of MnO2-1@PP MB for rhodamine B (RhB), methyl blue (MB), methyl orange (MO), and Carmine (CRM) in water all are achieved 99.00% in an impressive rate. Remarkably, even after undergoing twenty adsorption-desorption cycles, the removal efficiency for of MnO2-1@PP MB for RhB remained consistently around 99.00%. Furthermore, it was found that the removal behavior of MnO2@PP MB for RhB follows the pseudo-second-order kinetic model, meaning that is the adsorption process is primarily driven by chemical interactions. Compared to pristine PP MB, the mechanical properties of MnO2-1@PP MB just slightly decrease.

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  Cite this article

[IEEE Style]

D. Zhang, H. Sun, B. Yu, Y. Xie, F. Li, "Preparation of MnO2@PP MB for Organic Dyes Removal," Fibers and Polymers, vol. 26, no. 3, pp. 1265-1280, 2025. DOI: 10.1007/s12221-025-00885-5.

[ACM Style]

Dewei Zhang, Hui Sun, Bin Yu, Youxiu Xie, and Fengchun Li. 2025. Preparation of MnO2@PP MB for Organic Dyes Removal. Fibers and Polymers, 26, 3, (2025), 1265-1280. DOI: 10.1007/s12221-025-00885-5.

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pISSN : 1229 - 9197
eISSN : 1875 - 0052

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