Iodine nanotrap for highly efficient iodine capture under high temperature

Shui, Feng; Lei, Qiong; Dong, Xinglong; Pan, Tingting; Zhang, Zhiyuan; Li, Jinli; Mao, Yi; Zhang, Laiyu; Liu, Xiongli; You, Zifeng; Yang, Shuxing; Yang, Rufeng; Li, Jixin; Shi, Zhan; Yin, Jun; Li, Bai‐Yan; Bu, Xian‐He

doi:10.1016/j.cej.2023.143525

Cited by 24 publications

(7 citation statements)

References 46 publications

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“…It is therefore of great urgency to develop reliable and efficient adsorbents to capture and store iodine properly. Accordingly, various types of adsorbents, including zeolites, aerogels, metal-organic frameworks (MOFs), covalent organic frameworks (COFs) and porous organic polymers (POPs) have been studied for iodine capture 4 – 19 . Recently, discrete molecular cages or macrocycles have emerged as promising alternatives as iodine adsorbents 20 – 27 .…”

Section: Introductionmentioning

confidence: 99%

Counteranion-mediated efficient iodine capture in a hexacationic imidazolium organic cage enabled by multiple non-covalent interactions

Yang,

Hu,

Cai

et al. 2023

Nat Commun

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Developing efficient adsorbents to capture radioactive iodine produced from nuclear wastes is highly desired. Here we report the facial synthesis of a hexacationic imidazolium organic cage and its iodine adsorption properties. Crucial role of counteranions has been disclosed for iodine capture with this cage, where distinct iodine capture behaviors were observed when different counteranions were used. Mechanistic investigations, especially with the X-ray crystallographic analysis of the iodine-loaded sample, allowed the direct visualization of the iodine binding modes at the molecular level. A network of multiple non-covalent interactions including hydrogen bonds, halogen bonds, anion···π interactions, electrostatic interaction between polyiodides and the hexacationic skeleton of the cage are found responsible for the observed high iodine capture performance. Our results may provide an alternative strategy to design efficient iodine adsorbents.

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Section: Introductionmentioning

confidence: 99%

Counteranion-mediated efficient iodine capture in a hexacationic imidazolium organic cage enabled by multiple non-covalent interactions

Yang,

Hu,

Cai

et al. 2023

Nat Commun

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“…The high-resolution N 1s spectrum of CoP/Co 2 P@CNS can be deconvoluted into four peaks (Figure e). The peaks located at 398.8, 400.8, 401.8, and 403.9 eV are attributed to pyridinic-N, pyrrolic-N, graphitic-N, and oxidated-N. , …”

Section: Resultsmentioning

confidence: 99%

“…The high-resolution N 1s spectrum of CoP/Co 2 P@CNS can be deconvoluted into four peaks (Figure 2e). The peaks located at 398.8, 400.8, 401.8, and 403.9 eV are attributed to pyridinic-N, pyrrolic-N, graphitic-N, and oxidated-N. 50,51 Compared with CoP/Co 2 P@CN and Co 2 P@CN, the peaks of pyrrolic-N, graphitic-N, and oxidated-N in CoP/Co 2 P@ CNS are positively shifted, which suggests electron transfer from N to Co 2+ and Co 3+ . Notably, the peak area of pyridinic-N was significantly larger than that of oxidated-N; thus, pyridinic-N was the main active site for anchoring CoP/Co 2 P. In addition, it was shown that pyridinic-N also contributes to the enhancement of ORR performance.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Sulfur-Induced Electronic Optimization of N-Doped Carbon with CoP/Co₂P Heterostructure by Precursor Design for Rechargeable Zinc–Air Batteries

Liu,

Gao,

Yuan

et al. 2024

Inorg. Chem.

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Heteroatom doping and heterostructure construction are the key methods to improve the performance of electrocatalysts. However, developing such catalysts remains a challenging task. Herein, we designed two comparable polymers, phytic acid/thiourea polymer (PATP) and phytic acid/urea polymer (PAUP), as precursors, which contain C, N, S/O, and P by microwave heating. To pinpoint how the introduction of sulfur would affect the electronic structure and catalytic activity, these two polymers were physically blended with CoCo-Prussian blue analogue (CoCo-PBA) and further calcination, respectively. The highly dispersed CoP/Co2P-rich interfacial catalysts anchored on the N,S-codoped or N-doped carbon support were successfully prepared (CoP/Co2P@CNS and CoP/Co2P@CN). The prepared CoP/Co2P@CNS catalyst showed good ORR properties (E 1/2 = 0.856 V vs RHE) and OER properties (E j10 = 1.54 V vs RHE), which were superior to the commercial Pt/C and RuO2 catalysts. The reversible oxygen electrode index (ΔE = E j10 – E 1/2) can reach ∼0.684 V. Meanwhile, the rechargeable zinc–air battery assembled with a CoP/Co2P@CNS catalyst as the air cathode also showed excellent performance, with a charge–discharge cycle stability of up to 900 h. DFT calculations further confirm that the introduction of S atoms can affect the electronic structure and enhance the catalytic activity of C and N atoms on carbon support.

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“…52 Additionally, the peaks observed at 175 cm −1 and 172 cm −1 were attributed to the coordinated iodine of I 5 − species. 53,54 And the peaks observed at 244 cm −1 and 247 cm −1 were found to be attributed to I 2 . 46 Hence, we inferred that iodine molecules and electron-rich CILs formed some charge-transfer complexes through charge-transfer interactions, causing the emergence of I 3 − and I 5 − species.…”

Section: Adsorption Mechanism Of Cils Toward Imentioning

confidence: 91%

Enhanced iodine capture by the hydrogen bond reconstruction strategy

Gou,

Wang,

Wang

et al. 2024

J. Mater. Chem. A

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Iodine nanotrap for highly efficient iodine capture under high temperature

Cited by 24 publications

References 46 publications

Counteranion-mediated efficient iodine capture in a hexacationic imidazolium organic cage enabled by multiple non-covalent interactions

Counteranion-mediated efficient iodine capture in a hexacationic imidazolium organic cage enabled by multiple non-covalent interactions

Sulfur-Induced Electronic Optimization of N-Doped Carbon with CoP/Co₂P Heterostructure by Precursor Design for Rechargeable Zinc–Air Batteries

Enhanced iodine capture by the hydrogen bond reconstruction strategy

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Iodine nanotrap for highly efficient iodine capture under high temperature

Cited by 24 publications

References 46 publications

Counteranion-mediated efficient iodine capture in a hexacationic imidazolium organic cage enabled by multiple non-covalent interactions

Counteranion-mediated efficient iodine capture in a hexacationic imidazolium organic cage enabled by multiple non-covalent interactions

Sulfur-Induced Electronic Optimization of N-Doped Carbon with CoP/Co2P Heterostructure by Precursor Design for Rechargeable Zinc–Air Batteries

Enhanced iodine capture by the hydrogen bond reconstruction strategy

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Product

Resources

About

Sulfur-Induced Electronic Optimization of N-Doped Carbon with CoP/Co₂P Heterostructure by Precursor Design for Rechargeable Zinc–Air Batteries