Magnetic luffa/graphene/CuFe2O4 sponge for efficient oil/water separation

Liu, Zhuang; Gao, Bo; Zhao, Peng; Fu, Haiyang; Kamali, Ali Reza

doi:10.1016/j.seppur.2024.126347

Cited by 20 publications

(5 citation statements)

References 82 publications

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“…Its unique porous structure significantly enhances the actual specific surface area. 18 The stable porous structure of GA facilitates mass transfer and adsorption within pore channels. Moreover, GA is characterized by an ultralight weight, high elasticity, and compressibility, with most of its pore channels occupied by air.…”

Section: ■ Introductionmentioning

confidence: 99%

“…17 Consequently, GO has received considerable attention for its role in removing ionic dyes from water. 18 However, graphene oxide (GO) is highly hydrophilic and dispersible in water, posing challenges in separating and recovering from liquids after use. This can lead to secondary pollution and hinder the regeneration and recycling of the adsorbent.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Furthermore, the internal aromatic ring of GO interacts with aromatic organic contaminants through π–π stacking . Consequently, GO has received considerable attention for its role in removing ionic dyes from water …”

Section: Introductionmentioning

confidence: 99%

“…GA retains the intrinsic properties of graphene, overcoming its tendency to agglomerate and stack. Its unique porous structure significantly enhances the actual specific surface area . The stable porous structure of GA facilitates mass transfer and adsorption within pore channels.…”

Section: Introductionmentioning

confidence: 99%

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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: ■ Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Li,

Liu,

Gao

et al. 2024

Langmuir

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“…Supercapacitors are pivotal in electrochemical energy storage as they offer enhanced energy density, power performance, and cycling stability in comparison with conventional electrolytic supercapacitors. − Obtaining electrode materials with outstanding capacitance is crucial for advancing supercapacitor technology . The electrical double layer supercapacitors (activated carbon, carbon nanotubes, and graphene), as well as pseudocapacitive materials, are commonly used as supercapacitor electrode materials.…”

Section: Introductionmentioning

confidence: 99%

Supercapacitor Performance of Sulfonyldibenzene Derivative-Functionalized Graphene Aerogel

Xing,

Gong,

Gao

et al. 2024

Langmuir

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3D aerogels incorporating functionalized reduced graphene oxide (SUL/rGO) were prepared as a hydrothermal method utilizing graphene oxide (GO) and a sulfonyldibenzene derivative (SUL) as raw materials. The aromatic compound SUL, which contains hydroxyl and sulfonyl groups, was bonded to reduced graphene oxide (rGO) through π−π connections. The obtained composite material exhibited porosity within its structure with improved hydrophilicity, along with excellent electrochemical characteristics. This improvement was ascribed to the specific rGO structure, as well as the pseudocapacitance inherent in SUL, both of which synergistically contribute to improvement in the characteristics of the prepared electrode materials. Also, an analysis was performed employing density functional theory from which the density of states and adsorption energy of SUL on the surface of rGO were computed to further investigate the charge storage process within the prepared composite. The prepared SUL/rGO-2 electrode exhibited the highest specific capacitance value of 388 F/g at a current density equal to 1 A/g. The constructed symmetrical supercapacitor, SUL/rGO-2//SUL/rGO-2, attained an energy density value of 14.55 Wh/kg at a power density equal to 350 W/kg with an exceptional galvanostatic charge−discharge (GCD) cyclic stability equal to 91% following 10 000 cycles. Therefore, this review presents a novel functionalized graphene-based material incorporating hydroxyl and sulfonyl groups, which holds promise in future energy storage applications.

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