Two-dimensional heterogenous channels incorporated by enhanced-surface hydrophilic hollow ZIF-8 nanocrystals for ultrafast water permeation

Dai, Liheng; Huang, Kang; Xiong, Zhaodi; Qu, Kai; Wang, Yixing; Pang, Sichen; Zhang, Dezhu; Xu, Fang; Lei, Linfeng; Guo, Xuhong; Li, Zhiheng

doi:10.1016/j.memsci.2022.120943

Cited by 15 publications

(2 citation statements)

References 59 publications

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“…This decrease can be caused by the difference between the binding of ZIF‐8 and MBG to a hydrophile hydrogel network. As shown in previous studies, ZIF‐8 has a hydrophobic surface compared to the hydrophile MBG particles [ 57,58 ] which causes a weaker binding to the network. Double peaks for the 70:30 sample may be attributed to the possible localized accumulation of particles in the hydrogel during 3DP and the resultant inhomogeneity in the final product.…”

Section: Resultsmentioning

confidence: 78%

3D Printing of Bone Scaffolds Based on Alginate/Gelatin Hydrogel Ink Containing Bioactive Glass 45S5 and ZIF‐8 Nanoparticles with Sustained Drug‐Release Capability

Anvari Kohestani,

Pishbin

2023

Adv Eng Mater

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Herein, 3D printing coupled with drug‐release systems introduces many advantages to bone‐regenerative medicine. In this research, hydrogel‐based nanocomposite inks comprising alginate/gelatin (Alg/Gel) matrix supplemented with mesoporous bioactive glass (MBG) and zeolite‐imidazole framework‐8 (ZIF‐8) nanoparticles are presented. A fixed wt% of mixed nanoparticles at MBG/ZIF weight ratios of 85:15 and 70:30 is added to Alg/Gel to prepare nanocomposite inks. All inks have shear‐thinning behavior, facilitating scaffolds’ 3D printing via extrusion. Scaffolds’ 3D spatial and nanocomposite microstructures are confirmed using field‐emission scanning electron microscope and energy‐dispersive X‐ray (FESEM/EDX) and Fourier transform infrared (FT‐IR). Shear punch testing indicates an enhanced shear strength of 85:15 samples in both dry (9.49 ± 0.23 MPa) and wet conditions (1.19 ± 0.16 MPa). After 1 month, nanocomposite scaffolds have a higher degradation rate (65%) than Alg/Gel (50%) in phosphate‐buffered saline. In vitro drug‐release study using UV–visible spectrophotometry exhibits a similar prolonged release profile for 85:15 and 70:30 nanocomposites compared to Alg/Gel. Due to its better mechanical performance, 85:15 is used for bioactivity and cellular tests. MBG provides bioactivity in simulated body fluid by the rapid development of hydroxyapatite validated by FESEM/EDX, XRD, and FT‐IR. Nanocomposite scaffolds exhibit significantly higher MG‐63 cell viability (>90%) than Alg/Gel. Finally, these scaffolds provide a potential additive‐manufacturing solution to bone tissue regeneration.

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Section: Resultsmentioning

confidence: 78%

3D Printing of Bone Scaffolds Based on Alginate/Gelatin Hydrogel Ink Containing Bioactive Glass 45S5 and ZIF‐8 Nanoparticles with Sustained Drug‐Release Capability

Anvari Kohestani,

Pishbin

2023

Adv Eng Mater

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“…For example, Nair et al found an adjustable spatial effect that can increase the path tortuosity and thus narrow the effective lateral spaces of the solute by designing a π-intercalated GO-based membrane . Others also designed 2D heterogeneous channels in graphene-based membranes to obtain strict size exclusion and highly efficient water transfer paths . Meanwhile, water-selective transport channels have gradually emerged in graphene-based membranes with different transfer paths for mixtures. , By using the Nielsen transport model, Nie et al found a 4.2-fold difference in the diffusion length between the SFGO-La 3+ and LFGO-La 3+ membranes, and their diffusion lengths were 2–3 orders of magnitude higher than the membrane thickness .…”

Section: Introductionmentioning

confidence: 99%

Modeling of Alcohol/Water Separation in Graphene-Based Membranes: The Roles of Interfacial Adsorption and the Effective Transfer Path

Pan,

Ma,

Qin

et al. 2024

Ind. Eng. Chem. Res.

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With the expansion of the modern chemical industry into the nanoscale, two-dimensional (2D) graphene-based membranes have gained significant attention in alcohol/water mixture separation due to their large lateral dimensions and nanometer thickness. However, the interface-induced effect is poorly explained for a further understanding of the confined transfer mechanism of mixed fluids through 2D nanochannels. In this work, we proposed a theoretical framework considering the interfacial adsorption effect and effective transfer path of mixed fluids to describe the selectivity accurately of different alcohol/water systems (ethanol/water, n-butanol/water, and isopropanol/water) in 2D graphene-based membranes. Our results demonstrated that the low friction resistance of water contributed to the high permeation of water and the high selectivity of water/alcohol. Finally, we also discovered that there was a beneficial permeation for alcohol rather than water within a certain range of slit widths in the graphene channel, and the different slit widths for the graphene and MXene channels would have their specific separation performance for ethanol/water mixture due to the change of wettability and confined degree.

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Graphene–Encapsulated Si@C with Dual Carbon Layer Structure as High‐Performance Anode Materials for Lithium–Ion Batteries

Zhu,

Sun,

et al. 2024

ChemNanoMat

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Silicon‐based materials are among the highly promising anode candidates for Li‐ion batteries owing to their excellent theoretical energy density. However, the huge volume variation makes the application of silicon anode in lithium‐ion batteries be full of challenge. Herein, high‐performance Si@C@rGO composites anode for lithium‐ion batteries are successfully prepared by graphene oxide (GO) uniformly encapsulating resorcinol‐formaldehyde resin (RF) coated silicon nanoparticles. The RF‐derived carbon layer can prevent the silicon from direct contact with the electrolyte. Furthermore, the continuous conductive graphene network not only improves the overall electrical conductivity of the composite material, but also can be reversibly deformed with the volume change of silicon during the charging and discharging process, thus greatly improving the structural stability of the anode. The optimal Si@C@rGO‐2 composite provides a high specific capacity of 743.9 mAh g‐1 after 300 cycles at a current density of 1 A g‐1. Meanwhile, the material also exhibits good rate performance, showing a good reversible capacity of 719.5 mAh g‐1 even at a high current density of 2 A g‐1. In addition, this simple and low‐cost strategy of Si@C@rGO anode can provide a design reference for the further development of anode materials in lithium‐ion batteries.

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Two-dimensional heterogenous channels incorporated by enhanced-surface hydrophilic hollow ZIF-8 nanocrystals for ultrafast water permeation

Cited by 15 publications

References 59 publications

3D Printing of Bone Scaffolds Based on Alginate/Gelatin Hydrogel Ink Containing Bioactive Glass 45S5 and ZIF‐8 Nanoparticles with Sustained Drug‐Release Capability

3D Printing of Bone Scaffolds Based on Alginate/Gelatin Hydrogel Ink Containing Bioactive Glass 45S5 and ZIF‐8 Nanoparticles with Sustained Drug‐Release Capability

Modeling of Alcohol/Water Separation in Graphene-Based Membranes: The Roles of Interfacial Adsorption and the Effective Transfer Path

Graphene–Encapsulated Si@C with Dual Carbon Layer Structure as High‐Performance Anode Materials for Lithium–Ion Batteries

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