Zhang et al. (2023): Separation and capture of CO2 from ambient air using TEPA-functionalized PAN hollow fibers

Jianxin Zhang, Shasha Guo, Shidi Wang, Xiaoyao Tan IN: Separation and Purification Technology 324, 124635, https://doi.org/10.1016/j.seppur.2023.124635

In this work, tetraethylenepentamine (TEPA)-functionalized polyacrylonitrile (PAN) hollow fibers were fabricated via hydrolyzing nitrile groups on hollow fiber surface and then chemically grafting TEPA on it. The as-prepared PAN-TEPA hollow fiber was characterized by Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET). In CO₂ capture experiment, PAN-TEPA hollow fiber achieved high adsorption capacity under low CO₂ concentration (5.07 mmol g⁻¹, 5000 ppm, CO₂-N₂) source.

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