Ultrahigh volatile iodine uptake by hollow microspheres formed from a heteropore covalent organic framework

Yin, Zhi-Jian; Xu, Shunqi; Zhan, Tian‐Guang; Qi, Qiao-Yan; Wu, Zong‐Quan; Zhao, Xin

doi:10.1039/c7cc01045a

Cited by 239 publications

(136 citation statements)

References 32 publications

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“…After iodine uptake, new strong iodine peaks were detected beside the original ones. This result is consistent with the observation by Yin et al . The iodine molecules being encapsulated by the PAN4 was further evidenced by EDX element mapping, which revealed that the iodine was well dispersed in the whole porous sample (Figure S8).…”

Section: Resultssupporting

confidence: 92%

Nitrogen‐rich porous polyaminal network as a platform for iodine adsorption through physical and chemical interaction

Ren

Zhang

Zhu

et al. 2017

J of Applied Polymer Sci

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A series of nitrogen-rich porous polyaminal networks (PANs) with five different linkages were prepared through a facile route from cost-effective starting materials. Each structural unit bears a different number of phenyl and pyrrolyl rings, which are found to be useful for iodine uptake through a physical adsorption mechanism. The PAN3 bearing the 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BDP) units, which could adsorb iodine by both physical and chemical interaction, achieves an efficient iodine capacity up to 2.81 g/g. Significantly, these new nitrogen-rich PANs might be useful for capture of other volatile compounds.

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Section: Resultssupporting

confidence: 92%

Nitrogen‐rich porous polyaminal network as a platform for iodine adsorption through physical and chemical interaction

Ren

Zhang

Zhu

et al. 2017

J of Applied Polymer Sci

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“…No further change in the amount was observed after 60 min, indicating that the system was saturated and the uptake reached up maximum. The weight gain of iodine was 4110 mg g −1 for PG‐800, 3460 mg g −1 for PG‐700, and 2460 mg g −1 for PG‐600, much higher than that of graphene (1700 mg g −1 ) and other solid adsorbents,,,,, (Table ). To our best knowledge, the iodine uptake for PG‐800 is the highest value for the carbon‐based solid adsorbents reported to date ,.…”

Section: Resultsmentioning

confidence: 91%

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

Sun

Xie

et al. 2018

ChemistrySelect

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The demand for the safe and efficient capture and storage of radioactive iodine is growing worldwide especially after the Fukushima accident. Herein, porous graphene materials, which were prepared by reduction of graphene oxide followed by chemical activation, are proposed for removal and storage of iodine. The effect of activation on the structure and porosity of the porous graphene was characterized. Owing to its high accessible space for iodine uptake, an iodine vapor adsorption capacity of 4110 mg g−1 was achieved, which is the highest value for solid carbon‐based adsorbents up to now. Quite different from that of adsorption of iodine vapor, the adsorption of iodine from solvent solution is less affected by the porosity of porous graphene. The adsorption kinetic data can be well represented by the pseudo‐second‐order model and the equilibrium data can be defined well to the Langmuir isotherm. These findings may offer not only a simple and efficient new approach for trapping harmful and radioactive iodine species by carbon materials, but also provide fundamental insight into the structure‐activity relationship of graphene materials for iodine adsorption.

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“…SIOC-COF-7 (Figure 54 d) has been reported to adsorb iodine with acapacity that is much higher than the theoretical capacity based on the pore volume. [230] This effect likely originates from adsorption on the surface of the COF materials rather than the porous space of the COFs.…”

Section: Angewandte Chemiementioning

confidence: 99%

Covalent Organic Frameworks: Chemical Approaches to Designer Structures and Built‐In Functions

et al. 2019

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A new approach has been developed to design organic polymers using topology diagrams. This strategy enables covalent integration of organic units into ordered topologies and creates a new polymer form, that is, covalent organic frameworks. This is a breakthrough in chemistry because it sets a molecular platform for synthesizing polymers with predesignable primary and high‐order structures, which has been a central aim for over a century but unattainable with traditional design principles. This new field has its own features that are distinct from conventional polymers. This Review summarizes the fundamentals as well as major progress by focusing on the chemistry used to design structures, including the principles, synthetic strategies, and control methods. We scrutinize built‐in functions that are specific to the structures by revealing various interplays and mechanisms involved in the expression of function. We propose major fundamental issues to be addressed in chemistry as well as future directions from physics, materials, and application perspectives.

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Ultrahigh volatile iodine uptake by hollow microspheres formed from a heteropore covalent organic framework

Cited by 239 publications

References 32 publications

Nitrogen‐rich porous polyaminal network as a platform for iodine adsorption through physical and chemical interaction

Nitrogen‐rich porous polyaminal network as a platform for iodine adsorption through physical and chemical interaction

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

Covalent Organic Frameworks: Chemical Approaches to Designer Structures and Built‐In Functions

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