3 years ago

A Sponge-Like 3D-PPy Monolithic Material for Reversible Adsorption of Radioactive Iodine

A Sponge-Like 3D-PPy Monolithic Material for Reversible Adsorption of Radioactive Iodine
Tao Chen, Peng Mu, An Li, Zhaoqi Zhu, Weidong Liang, Wanli Zhang, Hanxue Sun
3D polypyrrole (3D-PPy) monolith is prepared by a simple chemical oxidation of pyrrole monomer using FeCl3 as an oxidant. The as-prepared PPy monolith exhibits an abundant porosity and with a mesopore size of about 9.1 nm in diameter. Taking advantage of its mesoprous feature as well as the unique chemical composition, the 3D-PPy is employed as the porous medium for adsorption and removal of radioactive iodine from environment. A high iodine adsorption capacity of 1.6 g g−1 for 3D-PPy is obtained which is competing with that of those reported porous organic polymers. Besides, the adsorption kinetics and adsorption thermodynamic experiments show that the adsorption is dominated by the pseudosecond-order kinetics and Langmuir models. Considering its simple and low cost-effective preparing method, unique monolithic porous as well as π–π conjugated chemical structure, the resulted 3D-PPy may be found useful applications for removal of radioactive iodine to address environmental issues. A sponge-like 3D-polypyrrole (PPy) monolithic material is prepared by chemical oxidation of pyrrole monomer using FeCl3 as an oxidant. The as-prepared PPy exhibits a relative high specific surface area of 16 m2 g−1. Moreover, the low cost-effective preparing method and its abundant pore structure as well as the unique chemical compositions making it an ideal candiate for adsorption of radioactive iodine.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/mame.201700156

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