Superhydrophobic polyimide/cattail-derived active carbon composite aerogels for effective oil/water separation

Wang, Yanming; Zeng, Xueying; Wang, Wei; Zhou, Peng; Zhang, Rubing; Chen, Hongli; Liu, Gang

doi:10.1016/j.seppur.2022.122994

Cited by 23 publications

(3 citation statements)

References 40 publications

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“…Balsa wood can achieve a porosity of up to approximately 90% (Jang and Kang 2022). Moreover, complex materials with a porous structure can facilitate the sorbent modi cation process, enhancing their porosity and the ability to make them hydrophobic, thereby improving oil/water separation e ciency (Wang et al 2023b;Zhou et al 2023). The outstanding mechanical strength, high stiffness, and abundance of cellulose make it an excellent raw source for biomass sorbent production (Akhlamadi et al 2021;Cuenca et al 2023;Ma et al 2023).…”

Section: Introductionmentioning

confidence: 99%

Multifunctional MnO2 nanorods-modified wood sponge for water remediation: Applications for heavy metal sorption and oil/water separation

Saghir,

Goharshadi

2024

Preprint

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This study focuses on the development of a wood sponge (WS) modified with MnO2 nanorods (MnO2/WS) from balsa natural wood, as an abundant environmental-friendly raw material, to adsorb organic solvents, oils, and heavy metal ions from water. The MnO2/WS composite exhibits an exceptionally low density of 0.014 g cm− 3 and a high porosity exceeding 97%. MnO2/WS demonstrates successful sorption-desorption cycles over 20 iterations. Zeta potential analysis reveals the negative charge (-22.31 mV) of MnO2 nanorods at pH 4.68, underscoring their affinity for adsorbing positively-charged heavy metal ions commonly found in industrial effluents. Moreover, WS exhibits exceptional mechanical robustness, enduring 1000 stress-strain cycles with high shape recovery, ensuring its durability under operational conditions. Data above proved several strengths for MnO2/WS, such as cost-effective production process, high reusability, remarkable sorption capacities for carbon tetrachloride and soybean oil at 29.56 and 17.65 times its mass, respectively, efficient performance, and the capability to produce potable water from real industrial effluents position MnO2/WS as an ideal solution for mitigating water crises.

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Section: Introductionmentioning

confidence: 99%

Multifunctional MnO2 nanorods-modified wood sponge for water remediation: Applications for heavy metal sorption and oil/water separation

Saghir,

Goharshadi

2024

Preprint

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“…As the demand for effective oil-water separation increased, functional porous materials with particular wettability 11 of surfaces were considered efficient absorbents and have attracted tremendous attention. Many superwetting porous absorbents materials including cotton fibers, 12 aerogels, 13 fabrics, 14 graphene foams, 15 and sponges 16 had been prepared and investigated for the treatment of oil pollutant. Among these, commercial melamine-formaldehyde (MF) sponges were considered as the ideal threedimensional oil absorbents due to their inexpensive price, low density, porous structure, absorbing performance, and wonderful mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic and photothermal sponge for effective oil/water separation and solar‐assisted recovery of viscous oil

Mao,

Chen,

Cui

et al. 2023

J of Applied Polymer Sci

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With the occurrence of offshore oil spills, the recovery of viscous oil continues to be a significant issue. The multi‐functional sponge with superhydrophobic, absorption of high viscosity oil is an effective approach to settle this problem. In this work, the melamine‐formaldehyde (MF) sponge was the backbone and doped with polydopamine (PDA) to mimic mussels. Subsequently, candle soot nanoparticles (CS) and polydimethylsiloxane (PDMS) were applied to modify the MF sponge into a superhydrophobic sponge (P‐CS‐PDA@MF) (WCA = 153.56°). The P‐CS‐PDA@MF sponge showed good absorption properties for many oils and organic solvents (33.87–78.90 times of its own weight). In addition, the P‐CS‐PDA@MF sponge also showed outstanding chemical stability, low density (0.013 g/cm3), emulsion‐breaking ability and flame retardancy. More interestingly, the P‐CS‐PDA@MF sponge showed superior photothermal conversion capability, the temperature of it increased to approximately 91°C within 100 s under simulated sunlight from room temperature (about 25°C), and the sorption capacity of viscous oils was significantly increased. Moreover, the P‐CS‐PDA@MF sponge exhibited a high efficiency (over 97%) for separating viscous oils/water mixtures with the aid of sunlight. This versatile and efficient multifunctional P‐CS‐PDA@MF sponge via a simple and low‐cost way shows promising prospect in oily wastewater treatment and water ecosystem remediation.

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“…Superhydrophobic materials have outstanding oil-water separation efficiency owing to their hydrophobic and lipophilic characteristics. [5][6][7] Because of their selective adsorption and separation of oils, many hydrophobically modified porous materials, such as textiles, 8 metal mesh, 9,10 sponges, 11,12 and aerogels, 13,14 are now intensively explored. However, the difficulty in removing oil and the longevity of these porous materials have a significant impact on their practical usage.…”

Section: Introductionmentioning

confidence: 99%

Robust self-healing superhydrophobic cotton fabric for durable and efficient oil–water separation

Zhang,

Guo

2023

New J. Chem.

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Superhydrophobic polyimide/cattail-derived active carbon composite aerogels for effective oil/water separation

Cited by 23 publications

References 40 publications

Multifunctional MnO2 nanorods-modified wood sponge for water remediation: Applications for heavy metal sorption and oil/water separation

Multifunctional MnO2 nanorods-modified wood sponge for water remediation: Applications for heavy metal sorption and oil/water separation

Superhydrophobic and photothermal sponge for effective oil/water separation and solar‐assisted recovery of viscous oil

Robust self-healing superhydrophobic cotton fabric for durable and efficient oil–water separation

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