Journal Article10.1021/ACS.IECR.7B04388
Superhydrophobic Graphene/Cellulose/Silica Aerogel with Hierarchical Structure as Superabsorbers for High Efficiency Selective Oil Absorption and Recovery
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TL;DR: In this article, a fluorinated hybrid aerogel (FHA) consisting of graphene oxide (GO), cellulose nanofibrils (CNFs), and silica nanoparticles by one-pot hydrothermal synthesis and subsequent freeze-drying and chemical vapor deposition modification was reported.
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Abstract: Carbon-based aerogels have been recognized as a promising 3D superabsorbent material for oil absorption due to their high absorption capacity. However, their selective absorption efficiency is limited because of their relatively low hydrophobicity. Here, we report the fabrication of a fluorinated hybrid aerogel (FHA) consisting of graphene oxide (GO), cellulose nanofibrils (CNFs), and silica nanoparticles by one-pot hydrothermal synthesis and subsequent freeze-drying and chemical vapor deposition modification. The CNFs in FHA prevented volume shrinkage, greatly reduced the bulk density, and increased the surface area, while the GO retained its mechanical strength and the free-standing characteristic of FHA. Silica particles and CNFs created hierarchical structures on pore walls, and the grafted fluorochains reduced the surface energy. The synergistic effect of the hierarchical structure and low surface energy contributed to the excellent superhydrophobicity (water contact angle of 157°) and water repellen...
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Citations
Superhydrophobic modification of cellulose and cotton textiles: Methodologies and applications
David W. Wei,Haiying Wei,Alec C. Gauthier,Junlong Song,Yongcan Jin,Huining Xiao +5 more
- 01 Jan 2020
TL;DR: In this article, a comprehensive survey of the progress achieved so far in the production of super-hydrophobic materials based on cellulose and fiber networks is presented, focusing on summarizing some of the aspects that are critical to advance this evolving field of science which may provide new ideas for the developing and exploring of super hydrophobic and green-based materials.
372
Cascade utilization of lignocellulosic biomass to high-value products
Yanrong Liu,Yanrong Liu,Yi Nie,Xingmei Lu,Xiangping Zhang,Hongyan He,Fengjiao Pan,Le Zhou,Xue Liu,Xiaoyan Ji,Suojiang Zhang +10 more
TL;DR: In this paper, a review of the latest research results from the aspect of cascade utilization of lignocellulosic biomass covering the whole chain from pretreatment to high-value products, and the research on the non-conventional pretreatments including microwave irradiation, supercritical fluids, ultrasonic irradiations, electric field, hydrodynamic cavitation, and ionic liquids are presented in detail and evaluated by 4 proposed levels.
338
Recyclable biomass carbon@SiO2@MnO2 aerogel with hierarchical structures for fast and selective oil-water separation
TL;DR: In this paper, a hierarchical SiO2@MnO2 structure was incorporated into the HBCSM aerogel to not only improve the surface roughness and hydrophobic properties but also enhance the absorption capacity and mechanical durability.
196
Advances in precursor system for silica-based aerogel production toward improved mechanical properties, customized morphology, and multifunctionality: A review.
TL;DR: This review paper presents a literature survey of precursor modification toward increased connectivity in the backbone of the silica-based aerogels and its composite version with carbon nanofillers, and the synthesis of inorganic and hybrid systems containing siloxane in the spine of these material systems.
145
Cellulose-Based Hybrid Aerogels: Strategies toward Design and Functionality.
TL;DR: A survey of the historical background and scientific achievements in the design and development of cellulose-based hybrid aerogel materials is encompassed in this paper, where the impacts of incorporating organic and inorganic ingredients with cellulose and the corresponding synergistic effects are discussed in terms of their design and functionality.
135
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