An ultralight, supercompressible, superhydrophobic and multifunctional carbon aerogel with a specially designed structure

Long, Sishi; Feng, Yunchao; He, Fan; He, Shuaishuai; Hong, Huachi; Yang, Xuerui; Zheng, Ling‐Ling; Liu, Jian; Gan, Lihui; Long, Minnan

doi:10.1016/j.carbon.2019.11.065

Cited by 77 publications

(25 citation statements)

References 50 publications

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“…For aerogels, the most frequently used methods include surface coating with hydrophobic agents [ 30c,51b,77 ] or carbonization treatment, [ 18a,78 ] to modify hydrophobicity and lipophilicity, mainly for effective oil–water separation. For instance, the high‐temperature carbonization process can remove numerous oxygen‐containing hydrophilic functional groups on the surface of CNF aerogels, [ 49 ] and also obtain some special features, including excellent thermal stability, a high‐water contact angle (≈140°), ultralow density (≈6 mg cm −3 ), and stable and enhanced oil adsorption capacity (>200 g g −1 ).…”

Section: Modification Of Nanocellulose Aerogels and Composite Fabricamentioning

confidence: 99%

“…introduced glucose and kaolin as carbon precursors into the system of CNFs and GO to further improve the mechanical performance of the aerogel composite, which was fabricated using unidirectional freeze drying and carbonization at 700 °C. [ 78 ] The composite aerogel possessed mechanical stability with good nonlinear elastic behavior under compaction. Even after 100 compressive cycles, the aerogel could still recover its original height by nearly 100% (Figure 17f), showing excellent fatigue resistance and structural robustness as a result of the timely and effective release of stress by the strong skeletal network.…”

Section: Applications Of Nanocellulose Aerogelsmentioning

confidence: 99%

“…[ 74a,83,161 ] Aerogels with carbon‐based fillers have been investigated by several research groups because of their high electrical conductivity, as well as thermal and chemical stability. [ 78,88c,90,162 ] Peng et al. fabricated a high‐performance CNT/rGO/CNF lightweight carbon aerogel by utilizing CNFs as bridges between rGO and CNTs.…”

Section: Applications Of Nanocellulose Aerogelsmentioning

confidence: 99%

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Recent Progress on Nanocellulose Aerogels: Preparation, Modification, Composite Fabrication, Applications

et al. 2021

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The rapid development of modern industry and excessive consumption of petroleum‐based polymers have triggered a double crisis presenting a shortage of nonrenewable resources and environmental pollution. However, this has provided an opportunity to stimulate researchers to harness native biobased materials for novel advanced materials and applications. Nanocellulose‐based aerogels, using abundant and sustainable cellulose as raw material, present a third‐generation of aerogels that combine traditional aerogels with high porosity and large specific surface area, as well as the excellent properties of cellulose itself. Currently, nanocellulose aerogels provide a highly attention‐catching platform for a wide range of functional applications in various fields, e.g., adsorption, separation, energy storage, thermal insulation, electromagnetic interference shielding, and biomedical applications. Here, the preparation methods, modification strategies, composite fabrications, and further applications of nanocellulose aerogels are summarized, with additional discussions regarding the prospects and potential challenges in future development.

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Section: Modification Of Nanocellulose Aerogels and Composite Fabricamentioning

confidence: 99%

Section: Applications Of Nanocellulose Aerogelsmentioning

confidence: 99%

Section: Applications Of Nanocellulose Aerogelsmentioning

confidence: 99%

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Recent Progress on Nanocellulose Aerogels: Preparation, Modification, Composite Fabrication, Applications

et al. 2021

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“…In recent years, flexible electronic devices have emerged in people's life and become a research hotspot. [ 1–16 ] Their wearable applications meet people's pursuit of healthy and comfortable lifestyle. The trend of our life is to gradually form a big data platform and realize cloud life.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in Flexible Microstructural Pressure Sensors toward Human–Machine Interaction and Healthcare Applications

et al. 2021

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With the rapid growth of artificial intelligence, wearable electronic devices have caught intensive research interest recently. Flexible sensors, as the significant part of them, have become the focus of research. Particularly, flexible microstructural pressure sensors (FMPSs) have attracted extensive attention because of their controllable shape, small size, and high sensitivity. Microstructures are of great significance to improve the sensitivity and response time of FMPSs. The FMPSs present great application prospects in medical health, human–machine interaction, electronic products, and so on. In this review, a series of microstructures (e.g., wave, pillar, and pyramid shapes) which have been elaborately designed to effectively enhance the sensing performance of FMPSs are introduced in detail. Various fabrication strategies of these FMPSs are comprehensively summarized, including template (e.g., silica, anodic aluminum oxide, and bionic patterns), pre‐stressing, and magnetic field regulation methods. In addition, the materials (e.g., carbon, polymer, and piezoelectric materials) used to prepare FMPSs are also discussed. Moreover, the potential applications of FMPSs in human–machine interaction and healthcare fields are emphasized as well. Finally, the advantages and latest development of FMPSs are further highlighted, and the challenges and potential prospects of high‐performance FMPSs are outlined.

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“…Kaolin is a low-cost and abundant clay that can be well-dispersed in CNF suspensions 13 . The incorporation of kaolin into cellulosic-based foamed structures to produce environmentally friendly materials suitable for a number of applications remains an unexplored area of research.…”

Section: Introductionmentioning

confidence: 99%

Characterization and properties of hybrid foams from nanocellulose and kaolin-microfibrillated cellulose composite

González-Ugarte

Hafez

Tajvidi

2020

Sci Rep

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Hybrid nanocellulose-based foams are a desirable class of low-density and porous materials for their potential in many applications. This study aims at characterizing and understanding the structure-properties relationship of four foam formulations prepared from combinations of cellulose nanofibrils (CNF), cellulose nanocrystals (CNC), and kaolin-microfibrillated cellulose composite. All the foams were crosslinked with a polyamide-epichlorohydrin crosslinker (Polycup) to impart stability under wet conditions without additional functionalization. Foams containing 25 wt% kaolin exhibited excellent shape recovery promoted by a higher load of crosslinker (5 wt%), and superior compressive properties. The addition of CNC at 33.3 wt% and 50 wt% did not seem to enhance the properties of the foam and also reduced the specific surface area. A preliminary comparative study between the four tested formulations was conducted to assess the feasibility of the foam as an adsorbent of methylene blue dye.

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An ultralight, supercompressible, superhydrophobic and multifunctional carbon aerogel with a specially designed structure

Cited by 77 publications

References 50 publications

Recent Progress on Nanocellulose Aerogels: Preparation, Modification, Composite Fabrication, Applications

Recent Progress on Nanocellulose Aerogels: Preparation, Modification, Composite Fabrication, Applications

Recent Progress in Flexible Microstructural Pressure Sensors toward Human–Machine Interaction and Healthcare Applications

Characterization and properties of hybrid foams from nanocellulose and kaolin-microfibrillated cellulose composite

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