The effect of cobalt content in Zn/Co-ZIF-8 on iodine capping properties

Butova, Vera V.; Буланова, Елена А.; Polyakov, V. E.; Guda, Alexander A.; Aboraia, Abdelaziz M.; Шаповалов, В. В.; Zahran, H.Y.; Yahia, I.S.; Soldatov, A. V.

doi:10.1016/j.ica.2019.04.011

Cited by 26 publications

(16 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For instance, doping Fe-C groups in ZIF-8 could greatly enhance its oxygen reduction reaction (ORR) activity [ 34 ]. The doping ions are not limited to improvement in the electrochemical field, but also could enhance the absorption capability and photocatalytic ability of ZIF-8 [ 35 , 36 ]. Butova et al, found that addition of cobalt ions in ZIF-8 could improve its absorption for iodine molecules [ 35 ].…”

Section: Introductionmentioning

confidence: 99%

Properties of Cobalt- and Nickel-Doped Zif-8 Framework Materials and Their Application in Heavy-Metal Removal from Wastewater

et al. 2020

View full text Add to dashboard Cite

Heterometallic zeolite imidazole framework materials (ZIF) exhibit highly attractive properties and have drawn increased attention. In this study, a petal-like zinc based ZIF-8 crystal and materials doped with cobalt and nickel ions were efficiently prepared in an aqueous solution at room temperature. It was observed that doped cobalt and nickel had obviously different effects on the morphology of ZIF-8. Cobalt ions were beneficial for the formation of ZIF-8, while addition of nickel ions tended to destroy the original configuration. Then we compared the absorption ability for metal ions between petal-like ZIF-8 and its doped derivatives with anion dichromate ions (Cr2O72−) and cation copper ions (Cu2+) as the absorbates. Results indicated that saturated adsorption capacities of Co@ZIF-8 and Ni@ZIF-8 for Cr2O72− reach 43.00 and 51.60 mg/g, while they are 1191.67 and 1066.67 mg/g for Cu2+, respectively, which are much higher than the original ZIF-8 materials. Furthermore, both the heterometallic ZIF-8 materials show fast adsorption kinetics to reach adsorption equilibrium. Therefore, petal-like ZIF-8 with doped ions can be produced through a facile method and can be an excellent candidate for further applications in heavy-metal treatment.

show abstract

Section: Introductionmentioning

confidence: 99%

Properties of Cobalt- and Nickel-Doped Zif-8 Framework Materials and Their Application in Heavy-Metal Removal from Wastewater

et al. 2020

View full text Add to dashboard Cite

show abstract

“…We observed the extinction of peaks at 1390 and 1405 cm −1 in the ZIF-7 III spectrum, while a peak at 1605 cm −1 observed for the ZIF-7 phase transforms into a double-peak at 1600 and 1610 cm −1 in the ZIF-7 III spectrum. The peak at 1675 cm −1 in the spectrum of the ZIF-7 phase is assigned to C=N bonds [68]. We compared the shape of crystals for two single-phase samples ZIF-7 DMF (ZIF-7 phase) and ZIF-7 DEF (ZIF-7 III) ( Figure 2).…”

Section: Resultsmentioning

confidence: 99%

MW Synthesis of ZIF-7. The Effect of Solvent on Particle Size and Hydrogen Sorption Properties

et al. 2020

Self Cite

View full text Add to dashboard Cite

We report here fast (15 min) microwave-assisted solvothermal synthesis of zeolitic imidazolate framework material (ZIF-7). We have optimized solvent composition to achieve high porosity and hydrogen capacity and narrow particle size distribution. It was shown that synthesis in N,N-diethylformamide (DEF) results in a layered ZIF-7 III phase, while N,N-dimethylformamide (DMF) as solvent leads to a pure ZIF-7 phase in microwave conditions. A mixture of toluene with DMF allows the production of pure ZIF-7 material only with the triethylamine additive. Obtained materials were comprehensively characterized. We have pointed out that both X-ray diffraction and infrared spectroscopy could be used for the identification of ZIF-7 or ZIF-7 III phases. Although samples obtained in DMF, and in a mixture of DMF, toluene, and triethylamine were assigned to the pure ZIF-7 phase, solvent composition significantly affected the size of particles in the material and nitrogen and hydrogen adsorption process.

show abstract

“…A sealed reaction chamber was used for I 2 vapor adsorption on ZIF‐8. [ 55–57 ] Briefly, the sheets and rods were put into 1.5 mL micro‐centrifuge tubes (Eppendorf) and the discs were placed into 50 mL centrifuge tubes (Corning). 9/15/26 mg of crystalline iodine were placed in the bottom of tube in MAO+Z Group and 15 mg iodine in MAO Group.…”

Section: Methodsmentioning

confidence: 99%

Iodine Immobilized Metal–Organic Framework for NIR‐Triggered Antibacterial Therapy on Orthopedic Implants

Teng

Zhang

Wang

et al. 2021

Small

View full text Add to dashboard Cite

Iodine has been known as an effective disinfectant with broad‐spectrum antimicrobial potency yet without drug resistance risk when used in clinic. However, the exploration of iodine for antibacterial therapy in orthopedics remains sparse due to its volatile nature and poor solubility. Herein, leveraging the superior absorption capability of metal–organic frameworks (MOFs) and their inherent photocatalytic properties, iodine‐loaded MOF surface is presented to realize responsive iodine release along with intracellular reactive oxygen species(ROS) oxidation under near‐infrared (NIR) exposure to achieve synergistic antibacterial effect. Iodine is successfully loaded using vapor deposition process onto zeolitic imidazolate framework‐8(ZIF‐8), which is immobilized onto micro arc oxidized titanium via a hydrothermal approach. The combination of NIR‐triggered iodine release and ZIF‐8 mediated ROS oxidative stress substantially augments the antibacterial efficacy of this approach both in vitro and in vivo. Furthermore, this composite coating also supported osteogenic differentiation of bone marrow stromal cells, as well as improved osseointegration of coated implants using an intramedullary rat model, suggesting improvement of antibacterial efficacy does not impair osteogenic potential of the implants. Altogether, immobilization of iodine via MOF on orthopedic implants with synergistic antibacterial effect can be a promising strategy to combat bacterial infections.

show abstract

The effect of cobalt content in Zn/Co-ZIF-8 on iodine capping properties

Cited by 26 publications

References 46 publications

Properties of Cobalt- and Nickel-Doped Zif-8 Framework Materials and Their Application in Heavy-Metal Removal from Wastewater

Properties of Cobalt- and Nickel-Doped Zif-8 Framework Materials and Their Application in Heavy-Metal Removal from Wastewater

MW Synthesis of ZIF-7. The Effect of Solvent on Particle Size and Hydrogen Sorption Properties

Iodine Immobilized Metal–Organic Framework for NIR‐Triggered Antibacterial Therapy on Orthopedic Implants

Contact Info

Product

Resources

About