Superhydrophobic cellulose-based aerogel derived from Phormium tenax (harakeke) for efficient oil sorption

Zhai, Yitong; Yuan, Xiangbao; Cheng, Laifei; Wu, Heng

doi:10.1016/j.indcrop.2023.116981

Cited by 18 publications

(2 citation statements)

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“…The slope of line (A) in this region represented the Young's modulus of WS, a metric that characterizes the material's stiffness or elasticity. The calculated Young's modulus of 1.717 kPa is notably low compared to other sorbents (Gundu et al 2023;Varamesh et al 2023;Zhai et al 2023…”

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confidence: 65%

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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confidence: 65%

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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“…Pure cellulose fibers (a SEM image of the fibers is shown in Figure S1) were extracted from harakeke according to the method from our previous work [22]. Glutaraldehyde solution (25%, Alfa Aesar, Haverhill, MA, USA) was used.…”

Section: Methodsmentioning

confidence: 99%

Superhydrophobic, Magnetic Aerogels Based on Nanocellulose Fibers Derived from Harakeke for Oily Wastewater Remediation

Zhai,

Yuan

2023

Polymers

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Cellulose-based aerogels have been seen as a promising sorbent for oil and organic pollutant cleaning; however, their intrinsic hydrophilicity and difficulty of recycling has hindered their practical application. In this work, a superhydrophobic, magnetic cellulose-based aerogel was fabricated as a highly efficient sorbent for the adsorption of oils and organic solvents. The aerogel was prepared via a simple freeze-drying method, followed by chemical vapor deposition (CVD). The incorporation of Fe3O4 nanoparticles into the aerogel not only makes it responsive to external magnetic field, but also contributes to the better hydrophobicity of the aerogel, in which the water contact angle (WCA) was about 20° higher than the aerogel without loading with Fe3O4 nanoparticles. The adsorption test showed that the resultant aerogel can selectively adsorb a wide range of oils and organic solvents from oil/water mixtures with a high adsorption capacity (up to 113.49 g/g for silicone oil). It can retain about 50% of its adsorption capacity even after 10 adsorption–squeezing cycles, which indicates its outstanding reusability. Moreover, the aerogels can be easily controlled by an external magnet, which is preferred for the adsorption of oily contaminants in harsh environments and enhanced the recyclability of the aerogel. We believe that this study provides a green and convenient approach for the practical fabrication of cellulose-based oil sorbents.

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

Vojdani Saghir,

Goharshadi

2024

Wood Sci Technol

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Superhydrophobic cellulose-based aerogel derived from Phormium tenax (harakeke) for efficient oil sorption

Cited by 18 publications

References 50 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, Magnetic Aerogels Based on Nanocellulose Fibers Derived from Harakeke for Oily Wastewater Remediation

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

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