Development of eco-friendly CO2-responsive cellulose nanofibril aerogels as “green” adsorbents for anionic dyes removal

Yang, Lin; Zhan, Yifei; Gong, Yujia; Ren, Erhui; Lan, Jianwu; Guo, Ronghui; Yan, Bin; Chen, Sheng; Song, Lin

doi:10.1016/j.jhazmat.2020.124194

Cited by 80 publications

(43 citation statements)

References 57 publications

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“…As a result, the hybrid aerogels were ductile combining the best aspects of both components 28 . In addition, hybrid aerogels of nanocellulose and functional materials including polydopamine, 29 MoS 2, 30 silica, 31 polypyrrole, 32 boron nitride, 33 and multicomponents 34,35 showed further improved small molecular adsorption 36 and thermal insulation in light of 3D nanoporous structure inherent of aerogels 37,38 . Notably, developing a material with additional partitioned pores for improved adsorption efficiency of a contaminant in ppm level and thermal superinsulation remains challenging.…”

Section: Introductionmentioning

confidence: 99%

Pickering emulsion templated strategy in composite aerogels with hierarchical porous structure improves thermal insulation and diphenylamine adsorption

Liu

Hua

et al. 2022

J of Applied Polymer Sci

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A facile Pickering emulsion templated approach is used to achieve nanocelluloses (NCs)/poly(aryl ether ketone) (PAEK) composite aerogels with low density and hierarchical porous structure. In this article, we evaluate the factors including water-oil volume ratio, PAEK loading and NCs species to unravel the impact of fiber morphology on the formation and properties of the Pickering emulsions and aerogels. The results show both cellulose nanofibrils (CNF) and microfibrous cellulose (MFC) display excellent performance in stabilizing Pickering emulsions. Besides, the NCs/PAEK composite aerogels reveal a nanonet constructed porous network with excellent properties of thermal insulation. The lowest thermal conductivity of 17.8 mWÁm À1 ÁK À1 is obtained for the CNF/PAEK composite aerogel. To our knowledge, this is one of the most efficient thermal insulators in the reported NCs-based aerogels. Additionally, the NCs/PAEK composite aerogels demonstrate an efficiency of 98.1% in diphenylamine adsorption of water. These findings reveal a potential application of NCs/PAEK composite aerogels in adsorbent and thermal insulators in chemical industries and the construction sector.

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Section: Introductionmentioning

confidence: 99%

Pickering emulsion templated strategy in composite aerogels with hierarchical porous structure improves thermal insulation and diphenylamine adsorption

Liu

Hua

et al. 2022

J of Applied Polymer Sci

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“…In addition, the dyes in the wastewater can lead to the deterioration of water quality 14 , so the wastewater containing dyes must be treated innocuously and the dye components need to be removed in order to discharge to the natural water environment or carry out secondary use 4 , 15 . There are many treatment methods for dye wastewater, such as flocculation sedimentation method, membrane separation method, oxidative degradation method, etc 16 , 17 .…”

Section: Introductionmentioning

confidence: 99%

“…There are many their own advantages, but a large amount of cost and complicated operation are often required, so it is difficult to popularize and apply on a large scale 18 , 19 . At present, adsorption technology is the most widely used method to remove dyes, which is favored by researchers because of its simplicity, safety, high efficiency, economy, wide applications and so on 15 , 20 – 23 . Adsorption is selective and can specifically remove target substances from complex pollutant solutions 24 .…”

Section: Introductionmentioning

confidence: 99%

Study on the adsorption properties of methyl orange by natural one-dimensional nano-mineral materials with different structures

et al. 2021

Sci Rep

108

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Methyl orange (MO) is a common anionic azo dye that is harmful to the environment and biology, so it must be treated innocuously before it can be discharged. Adsorption is an effective method to remove anionic dyes. Nanotube mineral is a natural one-dimensional adsorption material, and its unique morphology and structure endow it with good adsorption capacity. Although there are many related studies, there is a lack of in-depth discussions on the influence of nanotube’s composition and structure on the adsorption of dyes and other pollutants. In this paper, two kinds of natural one-dimensional silicate minerals [halloysite nanotubes (HNTs) and chrysotile nanotubes (ChNTs)] with similar morphology but slightly different compositions and crystal structures were used as adsorbents, and MO solution was used as simulate pollutants. It is the first time to discuss in depth the influence of the composition and structure of nanotube minerals on their charge properties and the adsorption performance of methyl orange dyes. It is found that HNTs and ChNTs have different adsorption capacity due to the difference of electronegativity between Al3+ and Mg2+ in the crystal, so they possess negative and positive charges respectively in near-neutral solution, which leads to the adsorption capacity of MO by ChNTs with positive charges which is greater than that of HNTs.

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“…Among them, the thermoresponsive ones made by Poly(N-isopropylacrylamide) (PNIPAM) have attracted a lot of scientists’ attention, because they possess a nature such that the trigged temperature is at 32 °C, close to body temperature, which made it one of the candidates for biomedical applications [ 22 , 23 ]. Noteworthily, the actuation process of thermoresponsive actuator is inevitably accompanied by a heat transfer, which plays a significant role in the sensitivity [ 24 ]. However, currently, most thermoresponsive actuations developed so far mainly reply on the outer heat source [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Giving Penetrable Remote-Control Ability to Thermoresponsive Fibrous Composite Actuator with Fast Response Induced by Alternative Magnetic Field

et al. 2021

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An alternative magnetic field (AMF)-induced electrospun fibrous thermoresponsive composite actuator showing penetrable remote-control ability with fast response is shown here for the first time. The built-in heater of magnetothermal Fe3O4 nanoparticles in the actuator and the porous structure of the fibrous layer contribute to a fast actuation with a curvature of 0.4 mm−1 in 2 s. The higher loading amount of the Fe3O4 nanoparticles and higher magnetic field strength result in a faster actuation. Interestingly, the composite actuator showed a similar actuation even when it was covered by a piece of Polytetrafluoroethylene (PTFE) film, which shows a penetrable remote-control ability.

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Development of eco-friendly CO2-responsive cellulose nanofibril aerogels as “green” adsorbents for anionic dyes removal

Cited by 80 publications

References 57 publications

Pickering emulsion templated strategy in composite aerogels with hierarchical porous structure improves thermal insulation and diphenylamine adsorption

Pickering emulsion templated strategy in composite aerogels with hierarchical porous structure improves thermal insulation and diphenylamine adsorption

Study on the adsorption properties of methyl orange by natural one-dimensional nano-mineral materials with different structures

Giving Penetrable Remote-Control Ability to Thermoresponsive Fibrous Composite Actuator with Fast Response Induced by Alternative Magnetic Field

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