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

Advanced Energy Materials, Год журнала: 2024, Номер 14(17)

Опубликована: Март 1, 2024

Abstract Aqueous zinc–iodine (Zn–I 2 ) 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 poor electrochemical reversibility, restricting practical usage. Herein, this study reports a bifunctional binder (polyacrylonitrile copolymer, known LA133) with strong iodine‐chemisorption capability for aqueous Zn–I suppress polyiodide shuttling. From both calculation experimental data, reveals that amide carboxyl groups in LA133 can strongly bond polyiodides, significantly immobilizing them at cathode side. As result, fewer byproducts, slower hydrogen evolution, lesser Zn dendrite battery are observed. Consequently, shows (202.8 mAh g −1 iodine utilization efficiency (96.1%), long cycling lifespan (2700 cycles). At mass loading 7.82 mg cm −2 , still retain 83.3% its initial after 1000 cycles. The based on total slurry reaches 71.2 higher than most recent works. strategy opens new avenue address shuttling challenge through binder.

Язык: Английский

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Iodine Adsorption–Desorption-Induced Structural Transformation and Improved Ag⁺ Turn-On Luminescent Sensing Performance of a Nonporous Eu(III) Metal–Organic Framework

Inorganic Chemistry, Год журнала: 2024, Номер 63(9), С. 4185 - 4195

Опубликована: Фев. 16, 2024

Posttreatment of pristine metal–organic frameworks (MOFs) with suitable vapor may be an effective way to regulate their structures and properties but has been less explored. Herein, we report interesting example in which a crystalline nonporous Eu(III)-MOF was transferred porous amorphous MOF (aMOF) via iodine adsorption–desorption posttreatment, the resulting aMOF showed improved turn-on sensing respect Ag+ ions. The Eu-MOF, namely, Eu-IPDA, assembled from Eu(III) 4,4′-{4-[4-(1H-imidazol-1-yl)phenyl]pyridine-2,6-diyl}dibenzoic acid (H2IPDA) exhibited two-dimensional (2D) coordination network based on one-dimensional secondary building blocks. close packing 2D networks gives rise three-dimensional supramolecular framework without any significant pores. Interestingly, Eu-IPDA could absorb molecules when crystals were placed at 85 °C, adsorption capacity 1.90 g/g, is comparable those many MOFs large BET surfaces. attributed strong interactions among molecule, carboxy group, N-containing group leads amorphization framework. After immersion iodine-loaded EtOH, approximately 89.7% removed, MOF, denoted as a-Eu-IPDA. In addition, remaining a-Eu-IPDA causes luminescent quenching fluorescence emission region center compared that Eu-IPDA. luminescence intensity water suspensions significantly enhanced ions added, detection limit 4.76 × 10–6 M, 1000 times It also anti-interference ability over common competitive metal potential sense natural bodies traditional Chinese medicine preparations. A mechanistic study between absorbed iodine, carboxylate N atoms all contribute performance

Язык: Английский

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Biomass betulin-based porous aromatic frameworks nanomicrospheres as adsorbents for reversible capture of iodine

Separation and Purification Technology, Год журнала: 2024, Номер 353, С. 128506 - 128506

Опубликована: Июнь 19, 2024

Язык: Английский

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Fabricating Multivariate Metal–Organic Frameworks by Metal Site Reduction as Green Catalyst for CO₂ Conversion

ACS Sustainable Chemistry & Engineering, Год журнала: 2025, Номер unknown

Опубликована: Март 4, 2025

Язык: Английский

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Cadmium(II) and Zinc(II) coordination polymers containing pyrazine ring: crystallographic, spectroscopic, TD/DFT calculations, bacteriostatic activity, and molecular docking

Journal of Molecular Structure, Год журнала: 2025, Номер unknown, С. 142155 - 142155

Опубликована: Март 1, 2025

Язык: Английский

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Co(II) and Zn(II) Coordination Polymers with π‐Conjugated Ligands for Enhanced Iodine Uptake in Vapor and Aqueous Media

Chemistry - An Asian Journal, Год журнала: 2025, Номер unknown

Опубликована: Апрель 14, 2025

Abstract The efficient removal of radioiodine from an aqueous solution is crucial for the sustainable advancement nuclear energy and environmental conservation. In this work, two π‐conjugated nonporous coordination polymers, namely, {[Co(bqdc)(dpe) 2 (H O) ]·H O} n ( Co‐CP ) [Zn(bqdc)(dpe)] Zn‐CP (bqdc 2− = 2,2′‐biquinoline‐4,4′‐dicarboxylate dpe 1,2‐di(4‐pyridyl)ethylene) were successfully synthesized characterized. Single crystal X‐ray analysis demonstrated that have different structures. displays 1D chain via bidentate monodentate modes bqdc dpe, respectively, whereas presents a threefold interpenetrated 3D framework through bridging bidentated ligands. Both CPs exhibit nature with high π‐electron richness in structural framework. compounds can adsorb iodine vapor phases adsorption capacity. capacities phase at 70 °C are 3.54 1.57 g/g , respectively. addition, effective solutions 2315.86 2032.97 mg/g, kinetics, isotherms, competing anion adsorption, real water samples studied. mechanism due to electron transfer sorption sites iodine, forming charge complex, which was confirmed by FTIR, PXRD, EDX, XPS techniques. They also be reused capture ability retain level effectiveness.

Язык: Английский

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Reversible anion-dependent iodine uptake in nonporous pseudopolymorphic coordination polymers

CrystEngComm, Год журнала: 2024, Номер 26(30), С. 4082 - 4097

Опубликована: Янв. 1, 2024

Novel nonporous hydrogen bonded urea-based CPs with the formula {[Hg( 4,4-pbubp )X 2 ](DMSO) x } n (X = Cl, Br, I) were synthesized. The iodine uptake capacity varied anion, compound containing chlorine anion showing highest capacity.

Язык: Английский

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Fabrication of a Cu(i)-carboxylate metal–organic framework by reduction of metal nodes for an azide–alkyne “click” reaction

Inorganic Chemistry Frontiers, Год журнала: 2024, Номер 11(14), С. 4263 - 4269

Опубликована: Янв. 1, 2024

A stable Cu( i )-carboxylate MOF is fabricated by ascorbic acid reduction, which breaks HSAB theory and achieves in situ phase transitions. The resultant Cu 2 H DOBDC acting as a CuAAC catalyst exhibited superior catalytic performance.

Язык: Английский

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Porous organic polymers with spiro-thioketal linkages for effective iodine capture

New Journal of Chemistry, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

The thiol-aldehyde polycondensation reaction was employed to synthesize novel spiro-thioketal-based porous organic polymers. At 75 °C, iodine uptake capacities of POPSPs were measured as 4.13, 5.25, and 5.65 g −1 , respectively.

Язык: Английский

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