Efficient methylene blue adsorption by sustainable tannin-derived porous organic polymers for water purification

Document Type

Article

Publication Title

Polymer Bulletin

Abstract

Due to the considerable threat that anthropogenic pollutants pose to water resources, addressing hazardous contaminants has gained increasing significance. Porous organic polymers (POPs), in particular, have emerged as highly promising sorbents for the efficient removal of pollutants. In this study, a tannin-derived porous organic polymer (TA-POP) was synthesized through a rapid and scalable method. Utilizing the azo-coupling process for polymerization, the sustainable tannic acid retained all of its phenolic –OH groups. The resulting TA-POP exhibited excellent adsorption properties and notable features such as significant specific surface area (208.266 m2 g⁻1). Adsorption experiments indicated that the kinetics followed a pseudo-second-order model, while the Langmuir isotherm provided the best fit. The maximum adsorption capacity of the TA-POP was found to be 125 mg/g. Their stable cycling performance underscores the potential of TA-POP for environmentally sustainable pollutant management.

First Page

12013

Last Page

12030

DOI

10.1007/s00289-025-05969-z

Publication Date

11-1-2025

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