Multilayer Graphene Oxide Supported ZIF-8 for Efficient Removal of Copper Ions

Lv, Xifeng; Zhang, Yishi; Wang, Xiaodong; Hu, Libing; Shi, Chunhui

doi:10.3390/nano12183162

Cited by 8 publications

(3 citation statements)

References 56 publications

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“…The absorption peaks at 1429, 1147, and 997 cm –1 are associated with the stretching of the C–N bond. The characteristic peaks at 756 and 424 cm –1 are attributed to the out-of-plane bending vibration of the CN ring and the stretching of Zn–N bonds, , respectively, indicating successful composite formation between the ZIF-8 crystals and DGA.…”

Section: Resultsmentioning

confidence: 99%

rGO/ZIF-8 Aerogel for Effective Removal of Malachite Green from Wastewater

Li,

Liu,

Gao

et al. 2024

Langmuir

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In this study, dopamine-modified graphene aerogel (DGA) is synthesized through a one-step hydrothermal method using graphene oxide as the precursor and dopamine as the reducing agent. Subsequently, in situ immersion synthesis is conducted to obtain ZIF-8 loaded on a dopamine-modified graphene aerogel skeleton (ZDGA), featuring a regular honeycomb interconnected mesoporosity and a high specific surface area of 532.8 m2/g. The synthesized ZDGA exhibited exceptional adsorption performance for the cationic dye malachite green. At room temperature, ZDGA achieved an impressive equilibrium adsorption capacity of 6578.34 mg/g. The adsorption process followed pseudo-secondary kinetics and adhered to the Langmuir model, indicating chemically dominated adsorption on a monomolecular layer. Intraparticle diffusion was the primary rate determinant, with π–π stacking, electrostatic adsorption, hydrogen bonding, and Lewis acid–base interactions serving as the key driving forces. It has an ideal specific surface area and good cycling performance, which highlights its potential application in dye wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

rGO/ZIF-8 Aerogel for Effective Removal of Malachite Green from Wastewater

Li,

Liu,

Gao

et al. 2024

Langmuir

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“…It has been discovered that ZIF-8 NPs has many application, such as antibacterial agent, nano-drug delivery system, [29,30] electrochemical sensor, [31] and adsorption agent. [32] In previous studies, we have successfully synthesized ZIF-8 NPs and demonstrated that it has antibacterial effect as well as can promote the healing of infected wounds, and we analyzed its mechanism utilizing transcriptomics and metabolomics. [33] Several studies have proved that some nanoparticles, including MOFs, are promising of inhibiting biofilm formation or dispersing established biofilm.…”

Section: Introductionmentioning

confidence: 99%

Zinc Imidazole Framework‐8 Nanoparticles Disperse MRSA Biofilm by Inhibiting Arginine Biosynthesis and Down‐Regulating Adhesion‐Related Proteins

Tian,

Liu,

et al. 2024

Adv Materials Inter

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Nanomaterials, including ZIF‐8 nanoparticles (NPs), are shown to be effective antimicrobial agents against Methicillin‐resistant Staphylococcus aureus(MRSA). However, the antibiofilm properties and mechanisms of ZIF‐8 NPs remain uncertain. In this study, ZIF‐8 NPs are prepared using the room temperature solution reaction method and characterized. Biofilm formation inhibition test and biofilm eradication test are performed and the results show that ZIF‐8 NPs can inhibit the formation of MRSA biofilm as well as disperse established MRSA biofilm. Proteomics and real‐time fluorescence quantitative polymerase chain reaction (PCR) are conducted to prove that ZIF‐8 NPs reduce the expression of adhesion‐related proteins, namely the fibronectin‐binding proteins A and B (fnbA/fnbB), fibrinogen binding protein caking factors A and B (clfA/clfB), elastin binding protein (ebps), and fibrin binding protein (eno). ZIF‐8 NPs also inhibit the arginine biosynthesis pathway by affecting the activities of argininosuccinate lyase, ornithine carbamyl transferase, Glutamate dehydrogenase, carbamate kinase, and arginine deiminase. A conclusion can be drawn from the above results that ZIF‐8 NPs can inhibit bacterial adhesion and kill bacteria directly, ultimately destroying MRSA biofilm. This study provides a molecular basis for the treatment of MRSA biofilm with ZIF‐8 NPs.

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“…The hybrid composite has demonstrated a greater performance relative to ZIF-8 and GO alone as a consequence of their synergistic effects. Likewise, Lv et al 18 successfully modified ZIF-8 with multilayer GO using methanol with the help of sodium dodecylbenzene sulfonate and polyvinyl pyrrolidone. However, the reaction time took 70 min to complete, and it needed a higher reaction temperature (35°C).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of zeolitic imidazolate framework‐8 modified graphene oxide composite and its application for lead removal

Ahmad

Salleh

Yusop

et al. 2023

J of Chemical Tech & Biotech

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BACKGROUNDThe removal of lead ions (Pb2+) from industrial wastewater can be achieved using adsorption technology. Composites of zeolitic imidazolate framework‐8 (ZIF‐8) and graphene oxide (GO) were prepared via room temperature synthesis (RTS) using RO water as the solvent and by mixing GO with separated parts of ZIF‐8 precursors before its combination. Three weight percentages of GO, 10wt%, 30wt% and 50wt%, were used to synthesize ZGH10, ZGH30 and ZGH50 to determine optimum preparation and application conditions.ResultsZGH30 showed the most outstanding performance as an adsorbent for Pb2+ removal from aqueous solution. As captured by field emission scanning electron microscopy image, ZGH30 showed an adequate amount of ZIF‐8 grown on all surfaces of thr GO sheet, with an appropriate exposure of GO sheet layers for further Pb2+ interaction. The Pb2+ adsorption test revealed that ZGH30 obtained the optimum operating values between pH 5 and 6, using 10 mg dosage and it could remove ≤97% of 100 mg L−1 Pb2+. Additionally, ZGH30 achieved the most rapid equilibrium time within 10 min, similar to ZGH50, as compared to their individual components, ZIF‐8 (240 min) and GO (300 min). The mechanism of Pb2+ adsorption fitted well with a Langmuir isotherm and pseudo‐second‐order kinetic model. The theoretical maximum adsorption capacities obtained through Langmuir isotherm were 200, 454.55, 476.19, 555.56 and 454.55 mg g−1, for GO, ZH, ZGH10, ZGH30 and ZGH50, respectively.ConclusionsTherefore, ZGH30 hybrid successfully unleashed its potential as the adsorbent for wastewater treatment technology with improved performance after modification. © 2023 Society of Chemical Industry (SCI).

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Multilayer Graphene Oxide Supported ZIF-8 for Efficient Removal of Copper Ions

Cited by 8 publications

References 56 publications

rGO/ZIF-8 Aerogel for Effective Removal of Malachite Green from Wastewater

rGO/ZIF-8 Aerogel for Effective Removal of Malachite Green from Wastewater

Zinc Imidazole Framework‐8 Nanoparticles Disperse MRSA Biofilm by Inhibiting Arginine Biosynthesis and Down‐Regulating Adhesion‐Related Proteins

Synthesis of zeolitic imidazolate framework‐8 modified graphene oxide composite and its application for lead removal

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