Nitrogen-Rich Triptycene-Based Porous Polymer for Gas Storage and Iodine Enrichment

Abstract

Scheme 1. Synthesis of NTP a a Reagents and conditions: 1,5-cyclooctadiene, bis(1,5-cyclooctadiene) nickel(0), 2,2′-bipyridyl, DMF, 85 °C, 96 h.

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

“…Based on these previous studies, here, the resulting PPy were chose as an adsorbent for capture of iodine. As shown in Figure a,b, the 3D‐PPy shown an apparent iodine adsorption compared to the P‐PPy and the high adsorption capacity of 1.6 g g −1 was obtained within 3 h. This value is much lower than hexaphenylbenzene‐based conjugated microporous polymers (3.36 g g −1 ) and porous azo‐bridged porphyrin‐phthalocyanine network (2.9 g g −1 ), but still have comparability with those polymers, such as nitrogen‐rich triptycene‐based porous polymer (1.8 g g −1 ) and PAF‐1 (1.86 g g −1 ), and is higher than JUC‐Z2 (1.44 g g −1 ) and porphyrin and pyrene‐based conjugated microporous polymer (1.3 g g −1 ) . Otherwise, compared with 3D‐PPy the P‐PPy exhibited a relative low iodine adsorption capacity of 0.63 g g −1 .…”

Amino‐functionalized hollow microporous organic nanospheres for pd supported catalysis and I2 uptake

“…As shown in Figure (A), all adsorbents have similar adsorption rate for iodine uptake within initial 1 h, while the saturated adsorption capacity at eventual adsorption equilibrium state are totally varied. For example, NH 2 ‐HMONs and NH 2 ‐HCPS both perform higher iodine uptake than HMONs and HCPS, respectively, which indicates that the amino groups can make great contributions to the enhanced iodine adsorption capacity due to the interaction between nitrogen atom and iodine . The similar enhanced tendency can also be observed for NH 2 ‐HMONs and HOMNs compared with NH 2 ‐HCPS and HCPS, respectively, which further demonstrate the importance of hollow spherical structure for the enhanced iodine capture.…”

Efficient Capture and Reversible Storage of Radioactive Iodine by Porous Graphene with High Uptake

“…For example, 129 I takes a very long half‐life of 1.57×10 7 years and is relatively mobile in the environment and serves as both tracer and potential radiological contaminant. Other radioactive isotopes of iodine such as 131 I with a short half‐life of days tend to bioaccumulate and cause thyroid cancer . Therefore, how to efficiently capture and reliably store these radioactive iodine species is urgent and remains challenging especially after the Fukushima accident in 2011 ,…”