Melamine-functionalization of the carbonyl-rich polymers for iodine vapor and Hg2+ capture

Zhang, Du; Wang, Jiajia; Wang, You; Cao, Yiwen; Li, Jiawei; Zhou, Fa; Huang, Jianhan; Liu, You‐Nian

doi:10.1016/j.cej.2023.141669

Cited by 7 publications

(1 citation statement)

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“…The peak at 533.45 eV represents the binding energy of C–O/H–O (Figure d and Figure S1c). These results gradually confirm that PHCPs have been successfully synthesized. As reported in the literature, the porphyrins have a strong optical absorption around 400 nm.…”

Section: Resultssupporting

confidence: 75%

Porphyrin-Based Hyper-Cross-Linked Polymers as Adsorbents for Reversible Capture of Iodine

Ma,

Shi,

Wang

et al. 2024

ACS Sustainable Chem. Eng.

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Designing a novel adsorbent with high selectivity and absorptive capacity to remove I 2 remains a challenging task. In this work, a series of porphyrin-based hyper-cross-linked porous organic polymers (PHCPs) with a dual hydroxy-rich structure were synthesized by the Friedel−Crafts reaction. PHCPs exhibit excellent thermal stability. The incorporation of abundant π-electrons and heteroatoms (N/O) in the PHCPs framework leads to substantial charge transfer interactions with iodine, resulting in a high adsorption capacity (469 mg g −1 ) and rapid adsorption. Moreover, the adsorption dynamics of PHCPs for iodine in both aqueous and cyclohexane solutions follow a pseudo-second-order kinetic model, and the adsorption isotherm model complies with the Freundlich model. Importantly, PHCPs selectively capture I 3 − in the presence of anionic competition and effectively capture iodine at different pH values. Additionally, the volatile iodine capture performance of PHCPs reached 623 wt %. This study highlights the extensive application prospects of PHCPs in the removal of iodine from both the gas and liquid phases.

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Section: Resultssupporting

confidence: 75%