Cellulose nanofibril/PVA/bamboo activated charcoal aerogel sheet with excellent capture for PM2.5 and thermal stability

Zhao, Ke; Ren, Changying; Lu, Yaobin; Zhang, Qi‐Jun; Wu, Qiang; Wang, Siqun; Dai, Chunping; Zhang, Wenbiao; Huang, Jingda

doi:10.1016/j.carbpol.2022.119625

Cited by 26 publications

(17 citation statements)

References 36 publications

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“…It may be more necessary to comprehensively analyze air pollution by integrating green technology (e.g., energy-efficient houses, emission control devices, etc. [ 59 ]), innovative materials (e.g., bamboo as green energetic plant [ 60 , 61 ], hydrogen [ 62 ], etc.). With the improvement of spatial and temporal data, it may become a future research direction to explore the mechanism of information infrastructure influence on spatial pollution based on multiple spatial scales.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

The Impact of Information Infrastructure on Air Pollution: Empirical Evidence from China

Zhang

Chen

Xiao

et al. 2022

IJERPH

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Information infrastructure construction has become an essential support for the new global technological revolution and industrial change. To examine whether information infrastructure can mitigate the level of air pollution, this paper measures the development level of information infrastructure in each region using the entropy-TOPSIS method based on the data of 31 Chinese provinces from 2013 to 2020. On this basis, it explores the impact of information infrastructure on atmospheric pollution and its mechanism using spatial measures and mediating effects. The results show that: (1) Information infrastructure can effectively improve air quality, though its spatial spillover effect is not obvious. (2) In addition to directly reducing air pollution, information infrastructure can also improve air quality by influencing industrial structure upgrading, or by influencing technological innovation first and then industrial structure upgrading. By exploring the impact of information infrastructure on air pollution and its action path, this paper expects to provide some scientific reference value for the construction of information infrastructure under the background of the new global technological revolution.

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Section: Conclusion and Discussionmentioning

confidence: 99%

The Impact of Information Infrastructure on Air Pollution: Empirical Evidence from China

Zhang

Chen

Xiao

et al. 2022

IJERPH

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“…Filtration capacity of PVA-based air filters for PM2.5 was tested using a self-built test system described in our previous study. 40 As shown in Figure 1, a constant air flow from compressor went through the flue gas generator bottle and made the simulated PM2.5 flue gas (concentration > 500 μg/m 3 ) which was generated from a burned incense in the smoke generating bottle forward through the membrane sample with a constant flow rate of 5 cm/s. Filtration efficiency was calculated by the formula E = (N 0 À N 1 )/N 0 .…”

Section: Filtration Capacity Test For Pm25mentioning

confidence: 99%

Preparation of electrospun PVA@Ls@BAC@PDMS composite nanofibrous air filtration membrane with high efficiency removal for PM2.5 and excellent heat resistance

Wang

Cai

et al. 2023

Journal of Polymer Science

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Development of water‐soluble polymer air filtration materials attracts considerable attentions due to their environmentally friendly performance and high efficiency, but the balance of mechanical strength, efficiency and pressure drop still is a severe challenge. Focusing on this issue, polyvinyl alcohol (PVA), bamboo activated carbon (BAC) and sodium lignosulfonate (Ls) were combined to construct an electrospinning system with two filtration functions. In the PVA@Ls@BAC system, the 3D network constructed by the electrospun PVA based nanofibrous could effectively intercept PM2.5, and the introduced Ls enhanced the mechanical strength of PVA nanofibrous due to its good rigidity. In addition, the added negatively charged BAC facilitated the electrostatic adsorption of PM2.5 while also improved the heat resistance of the system. Moreover, polydimethylsiloxane (PDMS) was introduced to enhance the water resistance of the system. The resulting electrospun PVA@Ls@BAC@PDMS composite nanofibrous air filtration membrane exhibited excellent air filtration performance (98.67%), water repellency (123.7° of WCA), and reusable performance, as well as having good mechanical property and the tensile fracture strain reaching 112%. Because of its good performance and simple preparation process, the electrospun PVA@Ls@BAC@PDMS composite nanofibrous air filtration membrane has great application space.

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“…This makes PVA particularly important in the context of petroleum scarcity. PVA is an odorless, non-toxic, biocompatible polymer (Zhao et al, 2022;Fu al, 2021), it is widely used in packaging, medical, construction, and other industries (Wei et Zhang et al, 2021). The intra-and inter-molecular hydrogen bonding makes PVA with high tensile strength, excellent adhesive properties, wear resistance, alkali resistance, and gas barrier properties.…”

Section: Introductionmentioning

confidence: 99%

Scalable manufacturing of cellulose nanofibrils to enhance melt-processed poly(vinyl alcohol) composites

Yu,

Zhu,

Deng

et al. 2023

Preprint

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Poly(vinyl alcohol) (PVA) is used in various fields as a degradable polymer with excellent physical properties and good film-forming capability. However, it is challenging to melt due to the melting point being so near to its decomposition temperature. Here, cellulose nanofibers (CNFs) are added to the PVA matrix to form strong hydrogen bonding and achieve melt-processing of PVA. Specifically, a facile but efficient mechanical exfoliation method with the aid of organic stone wastes (OSWs) is designed to realize scalable manufacturing of CNFs. As an industrial by-product, OSWs have abundant oxygen-containing groups on the surface, which can combine with the hydroxyl groups of cellulose to break down its inherent hydrogen bonding network. At the same time, OSWs are expected to enhance the shear force and friction force of cellulose during the mechanical exfoliation process. The resulting CNFs with an average diameter of 33.85 nm can significantly expand the melt-processing window of PVA to 66.6°C and enhance its mechanical properties. This strategy not only opens up scalable manufacturing of CNFs but also provides a new path for PVA melt-processing.

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Cellulose nanofibril/PVA/bamboo activated charcoal aerogel sheet with excellent capture for PM2.5 and thermal stability

Cited by 26 publications

References 36 publications

The Impact of Information Infrastructure on Air Pollution: Empirical Evidence from China

The Impact of Information Infrastructure on Air Pollution: Empirical Evidence from China

Preparation of electrospun PVA@Ls@BAC@PDMS composite nanofibrous air filtration membrane with high efficiency removal for PM2.5 and excellent heat resistance

Scalable manufacturing of cellulose nanofibrils to enhance melt-processed poly(vinyl alcohol) composites

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