Analysis of Radioactive Iodine Trapping Mechanism by Zinc-Based Metal–Organic Frameworks with Various N-Containing Carboxylate Ligands

Yu, Rui-Li; Li, Qian-Fan; Li, Zhen-Le; Wang, Xiaoyu; Xia, Liangzhi

doi:10.1021/acsami.3c07032

Cited by 12 publications

(5 citation statements)

References 66 publications

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“…Compared with some reported common adsorbents and Zn-MOFs, the I 2 adsorption amount of Zn-ABTC was better (Figures 2b and S7). 39−47 For example, the asymmetric unit of Zn-MOF-1 (1.25 g g −1 ) includes one azo double group, 45 while the asymmetric unit of Zn-ABTC includes two azo double and one amide groups. Therefore, the azo double and amide groups may be the key factor in improving the adsorption properties of Zn-ABTC.…”

Section: Synthesis Of [Zn 3 (Abtc) 15 (4-hpich)(h 2 O) 3 ]•10h 2 O•(z...mentioning

confidence: 99%

Functionalized Metal–Organic Framework with Azo Double and Amide Groups for Highly Efficient Iodine Capture

Suo,

Yang,

Wang

2024

Crystal Growth & Design

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The development of practical techniques for trapping radioactive iodine (I 2 ) is crucial to the safe development of nuclear power. Herein, we reported a functionalized porous metal−organic framework (MOF), [Zn 3 (ABTC) 1.5 (4-Hpich)(H 2 O) 3 ]•10H 2 O (Zn-ABTC) (H 4 ABTC = 2,2′,5,5′-azobenzenetetracarboxylic acid, 4-Hpcih = 4-pyridinecarbaldehyde isonicotinoyl hydrazone), with azo double and amide groups. The adsorption experiments showed that Zn-ABTC exhibited excellent adsorption capacity for volatile I 2 (2.02 g g −1 ) and I 2 cyclohexane solution (526 mg g −1 ) due to the introduction of nitrogen and oxygen active sites into the framework. Furthermore, Zn-ABTC has excellent recoverability and stability, retaining its adsorption capacity, even after five cycles. The spectroscopic analysis revealed the multiple interactions between the I 2 molecules and azo double as well as amide groups. This work provides a rational strategy for constructing functional MOF materials for I 2 adsorption.

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Section: Synthesis Of [Zn 3 (Abtc) 15 (4-hpich)(h 2 O) 3 ]•10h 2 O•(z...mentioning

confidence: 99%

Functionalized Metal–Organic Framework with Azo Double and Amide Groups for Highly Efficient Iodine Capture

Suo,

Yang,

Wang

2024

Crystal Growth & Design

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“…The functional groups in two binders are mainly the hydroxyl group (Figure S30, Supporting Information), which is not as effective as the carboxyl group in PAA or LA 133 binders. [50,51] We also investigated another non-aqueous binder: PVDF. The PVDF is more hydrophobic than other binders.…”

Section: High Mass Loading Performance Of the Zn-i 2 Battery With La1...mentioning

confidence: 99%

An Iodine‐Chemisorption Binder for High‐Loading and Shuttle‐Free Zn–Iodine Batteries

Wang,

Li,

et al. 2024

Advanced Energy Materials

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Aqueous zinc–iodine (Zn–I2) batteries have attracted considerable research interest as an alternative energy storage system due to their high specific capacity, intrinsic safety, and low cost. However, the notorious shuttle effect of soluble polyiodides causes severe capacity loss and poor electrochemical reversibility, restricting their practical usage. Herein, this study reports a bifunctional binder (polyacrylonitrile copolymer, as known as LA133) with strong iodine‐chemisorption capability for aqueous Zn–I2 batteries to suppress polyiodide shuttling. From both calculation and experimental data, this study reveals that the amide and carboxyl groups in LA133 binder can strongly bond to polyiodides, significantly immobilizing them at cathode side. As a result, fewer byproducts, slower hydrogen evolution, and lesser Zn dendrite in the Zn–I2 battery are observed. Consequently, the battery shows high specific capacity (202.8 mAh g−1) with high iodine utilization efficiency (96.1%), and long cycling lifespan (2700 cycles). At the high mass loading of 7.82 mg cm−2, the battery can still retain 83.3% of its initial capacity after 1000 cycles. The specific capacity based on total cathode slurry mass reaches 71.2 mAh g−1, higher than most of the recent works. The strategy opens a new avenue to address the shuttling challenge of Zn–I2 batteries through bifunctional binder.

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“…Amongst the materials utilized for the removal of pollutants from an aqueous medium, metal-organic frameworks have become a promising candidate for improved wastewater treatment [14][15][16][17] . This is mainly due to their intrinsic features such as; structural diversity, high adsorption capacity, and high specific surface area 18,19 .…”

Section: Leila Razavi Heidar Raissi Ozra Hashemzehi and Farzaneh Farzadmentioning

confidence: 99%

Significantly enhanced performance for phenol compounds removal by MOF-5 nano-composite via its surface modification

Razavi,

Raissi,

Hashemzehi

et al. 2024

npj Clean Water

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The present study is focused on the use of cubic metal-organic frameworks-5 (MOF-5) and its functionalized form in the removal of phenolic pollutants by molecular dynamics (MD) and Well-tempered metadynamics (WTMD) simulation methods. It was found that the adsorption mechanism of MOF-5s/phenolic compounds is mostly due to the van der Waals and π–π interactions. However, electrostatic and hydrogen bond (HB) interactions also play a significant role in removing phenolic pollutants by MOF-5 and its functionalized form. The results show that the fluorine functional group (F-MOF-5) increases the adsorption capacity of phenol compounds on the adsorbent surface. By functionalizing the MOF-5 with a methyl functional group (CH3-MOF-5), the adsorption strength decreases. The WTMD calculation confirmed that at the most stable state, the free energy (FE) value of system II (the most stable system in functionalized systems with –F functional group) is about −289.528 kJ mol−1. This value is ~5.781 and 35.514 kJ mol−1 more negative than the FE of the I and III systems (the most stable systems in the pristine and CH3-MOF-5/pollutant systems, respectively). Altogether, the results indicate that F-MOF-5 can be considered a more suitable adsorbent than MOF-5 and CH3-MOF-5 for phenolic pollutants removal from the environment for more assessment.

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Analysis of Radioactive Iodine Trapping Mechanism by Zinc-Based Metal–Organic Frameworks with Various N-Containing Carboxylate Ligands

Cited by 12 publications

References 66 publications

Functionalized Metal–Organic Framework with Azo Double and Amide Groups for Highly Efficient Iodine Capture

Functionalized Metal–Organic Framework with Azo Double and Amide Groups for Highly Efficient Iodine Capture

An Iodine‐Chemisorption Binder for High‐Loading and Shuttle‐Free Zn–Iodine Batteries

Significantly enhanced performance for phenol compounds removal by MOF-5 nano-composite via its surface modification

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