Modified treatment for carbonized cellulose nanofiber application in composites

Ma, Libo; Zhang, Yang; Wang, Siqun

doi:10.1016/j.compositesa.2016.09.007

Cited by 19 publications

(7 citation statements)

References 48 publications

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“…The peak at 1650 (w) cm –1 is due to the adsorbed water O–H bending. Peaks at about 2920 cm –1 are due to the symmetric and antisymmetric vibration of −CH 2 groups and the peak at 1140 (s) belongs to the stretching band of C–C ring. , The presence of two new peaks at 1395 and 1586 cm –1 result from symmetric and asymmetric stretching vibration of the carbon-oxygen group of acetate (CO), which presents the anionic moieties (segments) of acetate in the ZnO/CNF matrix …”

Section: Results and Discussionmentioning

confidence: 99%

“…Peaks at about 2920 cm −1 are due to the symmetric and antisymmetric vibration of −CH 2 groups and the peak at 1140 (s) belongs to the stretching band of C−C ring. 53,54 The presence of two new peaks at 1395 and 1586 cm −1 result from symmetric and asymmetric stretching vibration of the carbon-oxygen group of acetate (CO), which presents the anionic moieties (segments) of acetate in the ZnO/CNF matrix. 55 To investigate the specific surface area and pore size of the prepared samples, the nitrogen adsorption (BET) analysis was done.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

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ZnO/Cellulose Nanofiber Composites for Sustainable Sunlight-Driven Dye Degradation

Dehghani

Nadeem

Raghuwanshi

et al. 2020

ACS Appl. Nano Mater.

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Porous ZnO/cellulose nanofiber (CNF) composites were synthesized to investigate their photocatalytic degradation of methylene blue (MB) dye (a persistent organic pollutant model) under a UV lamp and sunlight. UV/vis analysis indicated that complete photodegradation was achieved in about 10 min under natural sunlight with low UV intensity (between 1500 and 2900 μW/cm–1 of UVA/B). Scanning electron microscopy, Fourier transform infrared, Brunauer–Emmett–Teller, X-ray diffraction, and small-angle X-ray scattering characterization of the composite were consistent with flower/plate morphology ZnO nanomaterials of similar size to the CNF fiber diameter distributed in the matrix. The catalyst with 0.3 M Zn(Ac)2 and 1.5 wt % CNF loading was the sample with the highest MB photodegradation efficiency of >99% in less than 10 min. This study provides proof-of-concept of a simple, sustainable, ecofriendly, and industrially scalable approach to synthesize extremely efficient ZnO/CNF photocatalysts for the degradation of organic pollutants. Catalyst performance showed greater dye degradation with a function of irradiation time as compared to state-of-the-art catalysts reported in the literature.

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Section: Results and Discussionmentioning

confidence: 99%

Section: ■ Materials and Methodsmentioning

confidence: 99%

ZnO/Cellulose Nanofiber Composites for Sustainable Sunlight-Driven Dye Degradation

Dehghani

Nadeem

Raghuwanshi

et al. 2020

ACS Appl. Nano Mater.

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show abstract

“…The FT-IR spectrum of UiO-66 showed characteristic peaks at 1583/1393 and 743/657 cm –1 corresponding to the −COO stretching and C–H vibration in the organic ligand of UiO-66, respectively . Meanwhile, in the spectrum of the TOCN aerogel (CAC_0), the peaks at 1040 and 1162 cm –1 were assigned C–O–C and C–O functional groups, respectively . All those peaks were observed in the UiO-66/TOCN aerogel composites (CAC_8, CAC_17, CAC_35, and CAC_54), and the peaks derived from UiO-66 were gradually intensified with the increase in the UiO-66 content.…”

Section: Resultsmentioning

confidence: 99%

Robust Nanocellulose/Metal–Organic Framework Aerogel Composites: Superior Performance for Static and Continuous Disposal of Chemical Warfare Agent Simulants

Seo

Song

Lee

et al. 2021

ACS Appl. Mater. Interfaces

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Environment-friendly and robust nanocellulose/metal–organic framework aerogel composites were prepared for effective detoxification of chemical warfare agent simulants both in static and dynamic continuous flow systems. For this, we fabricated a durable porous composite of the UiO-66 catalyst and TEMPO-oxidized cellulose nanofibers (TOCN) to examine as a detoxification filter. Even with over 50 wt % UiO-66, the obtained cellulose aerogel composites exhibited high stability without leaking of UiO-66 for 4 weeks under an aqueous state. The cellulose aerogel composite with 54 wt % UiO-66 showed a quite high surface area (483 m2 g–1) despite the presence of TOCN, which caused fast degradation of methyl paraoxon (MPO), a nerve agent simulant, with a 0.7 min half-life in an aqueous solution with N-ethylmorpholine buffer. This aerogel composite was then examined as the detoxification filter in the continuous flow system under a 7.2 mL h–1 flow rate, which surprisingly decomposed 53.7 g of MPO within 1 h with 1 m2 of the effective area.

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“…The common fillers can best be treated as inorganic fillers such as talc [31], glass fiber [32], calcium carbonate [33], silica [34], and carbon-based materials [35][36][37], as well as organic fillers such as cellulose [17,18] and lignin from wood fibers [38]. In recent years, researchers have shown an increasing interest in carbon-based materials-particularly carbon nanotubes [39], carbon nanofibers [40], and graphene [41]-for their excellent electronic, thermal, magnetic, and mechanical properties. Meanwhile, special attention has been paid to cellulose nanofibers due to their abundance and biodegradability, as well as their excellent mechanical and thermal performances, giving them great potential for use in polymeric foams [17].…”

Section: Basic Considerations Of Microcellular Foams Microcellular Formation Mechanism In Foam Processingmentioning

confidence: 99%

A review of thermoplastic polymer foams for functional applications

Xie

Yang

et al. 2021

J Mater Sci

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Recently, functional applications of thermoplastic foams have received extensive attention from the research and materials communities, focusing on their various applications, key challenges, material systems designs, processing methods, and cellular structure characteristics needed for specific functional applications. This review paper starts with consideration of the microcellular foaming mechanism and basic concepts of microcellular foam processing, followed by polymer modification methods, and crucial factors that determine the performance of thermoplastic foams. Special emphasis has been placed on the synergies between foaming and reinforcements, including functional fillers and polymer blends; improvements in homogeneous, functional properties by achieving uniform cell structure and cell dispersion in polymer systems; and comparison of melt processing and solvent-based methods. Then, a wide array of advanced functional applications for foams-such as lightweight applications, heat and sound insulation, electromagnetic shielding, tissue engineering, oil spill cleanup, shape memory, and flexible materials-will be presented. In particular, the relationships between cellular structure and anticipated properties-including mechanical, barrier, dielectric, biomedical, and other properties required in advanced functional applications-will be discussed. Finally, we will outline a future perspective of lightweight and functional foams and suggest recommended future work regarding functional microcellular foams.

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Modified treatment for carbonized cellulose nanofiber application in composites

Cited by 19 publications

References 48 publications

ZnO/Cellulose Nanofiber Composites for Sustainable Sunlight-Driven Dye Degradation

ZnO/Cellulose Nanofiber Composites for Sustainable Sunlight-Driven Dye Degradation

Robust Nanocellulose/Metal–Organic Framework Aerogel Composites: Superior Performance for Static and Continuous Disposal of Chemical Warfare Agent Simulants

A review of thermoplastic polymer foams for functional applications

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