Exploration of 1D channels in stable and high-surface-area covalent triazine polymers for effective iodine removal

CN linked covalent organic framework for the efficient adsorption of iodine in vapor and solution

“…Among them, inorganic adsorbents, 7,8 such as ion-exchange zeolites 9,12,13 and silver-functionalized silica aerogels, 10,11 usually exhibit high cost, low uptake capacities and instability toward water and moisture. In recent years, metal–organic frameworks (MOFs) 14–20 and porous organic polymers (POPs), 21–25 which include conjugated microporous polymers (CMPs), 25,26 covalent triazine frameworks (CTFs), 27 charged porous aromatic frameworks (PAFs) 21,28,29 and covalent organic frameworks (COFs), 24,30–41 have attracted a lot of attention for worthwhile iodine capture. POPs have been found to exhibit high potential for iodine capture and storage due to their high surface area, and the high interaction between adsorbents and iodine.…”

A crosslinking alkylation strategy to construct nitrogen-enriched tetraphenylmethane-based porous organic polymers as efficient carbon dioxide and iodine adsorbents

“…This mismatched adsorption behavior might be related to the necessary expansion or swelling of the polymer networks in order to accommodate the iodine molecules. 23 The I2 uptake capacities of mPTPM-3 (up to 3.94 g/g within 2.5 h) are superior to most of the reported POPs (Table S2), although they are still some little lower than the values found on CaIPOF-1 (4.06 g/g), 35 CTF-1@ZnCl2 (4.31 g/g), 36 TatPOP-2 (4.5 g/g), 37 and CMP-LS5 (4.1 g/g). 38 However, to achieve these values, these adsorbents took significantly longer time (12-30 h), leaving our mPTPM-3 as a fast and efficient adsorbent for I2.…”

Graphitic Aza‐Fused π‐Conjugated Networks: Construction, Engineering, and Task‐Specific Applications

“…Besides CO 2 , the graphitic aza-fused π-conjugated networks performed well as adsorbents toward, but not limited to, the uptake and separation of H 2 , [113][114][115][116] CH 4 , [117] acetylene, ethylene, [118] ethane, propane, [119] NO, [120] SO 2 , [120] and gaseous phase xylene, [121] aiming at gas storage and separation. High efficiency of these materials is also witnessed in the removal and extraction of pollutants and toxic metal ions, [28,122] such as iodine, [123] volatile aromatic pollutants, [124] biorefinery products (e.g., itaconic acid, lysine, and glucosebased mixtures), [125] organic dyes, [126] and mercury. [127] The CO 2 uptake performance of selected materials is summarized in Table 1.…”