Multifunctional boron nitride nanosheet/polymer composite nanofiber membranes

Yin, Chuan-Gen; Ma, Yu; Liu, Zhongjie; Fan, Jinchen; Shi, Penghui; Xu, Qing

doi:10.1016/j.polymer.2018.12.038

Cited by 64 publications

(40 citation statements)

References 47 publications

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“…have aroused singnificant interest [38][39][40][41]. For example, various 2D materials, such as graphene [42,43], graphyne [44,45], single layer hexagonal BN [46][47][48], germanane [49][50][51], phosphorene [52,53], MoS 2 [54,55], WSe 2 [56,57] , and other TMD S [57,58], have been examined as promising substrates for anchoring metal atoms, which could inhibit the isolated metal atoms from agglomeration and provide a specific surface area for adhesive metal atoms as the active site [59].…”

Section: Introductionmentioning

confidence: 99%

Non-noble metal single-atom catalyst of Co1/MXene (Mo2CS2) for CO oxidation

Talib

Baskaran

et al. 2020

Sci. China Mater.

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MXene is a variety of new two-dimensional (2D) materials with early transition metal carbides, nitrides, and carbonitrides. Quantum chemical studies have been carried out on the geometries, electronic structures, stability and catalytic properties of a non-noble metal single-atom catalyst (SAC) with single Co atom anchored on MXene materials of Mo 2 CS 2. The Co adatom anchored on top of the Mo atom of this MXene is found to be rather stable, and this SAC is appropriate for CO oxidation. The charge transfers from the surface to the adsorbed CO and O 2 play a significant role in the activation of these molecules on Co 1 /Mo 2 CS 2. With this catalyst, the Eley-Rideal (ER), Langmuir-Hinshelwood (LH), and Termolecular Eley-Rideal (TER) mechanisms are explored for CO oxidation. We find that, while all the three mechanisms are feasible at low temperature, Co 1 /Mo 2 CS 2 possesses higher catalytic activity for CO oxidation through the TER mechanism that features an intriguing OC(OO)CO intermediate (IM) adsorbed on Co single atom. The calculated activation energy barriers of the rate-limiting step are 0.67 eV (TER), 0.78 eV (LH) and 0.88 eV (ER), respectively. The present study illustrates that it is promising to develop and design low-cost, non-noble metal SACs using MXene types of 2D materials.

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Section: Introductionmentioning

confidence: 99%

Non-noble metal single-atom catalyst of Co1/MXene (Mo2CS2) for CO oxidation

Talib

Baskaran

et al. 2020

Sci. China Mater.

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“…Therefore, especially in the last decade, there are many studies investigating the production of h-BN nanofiber structures via the electrospinning technique, characterization of these structures, and indicating their potential in various application areas. For instance, multifunctional h-BN nanosheet/ poly(vinyl alcohol) (PVA) nanofiber membranes for use in electronic packaging and water treatment applications [26]; h-BN/poly (pcaprolactone) (PCL) composite nanofibers [27], and h-BN nanofibers [28] for aerospace and high-temperature filtration applications; h-BN/polyacrylonitrile (PAN) composite nanofibers [29] and h-BN/carbon composite nanofibers [30] as high-security low-cost electrolyte and electrode material for lithium-ion batteries applications; PCL, to use in bone-tissue engineering applications tricalcium phosphate (TCP) and h-BN composite nanofibers [31]; high-activity h-BN/titanium dioxide (TiO 2 ) composite nanofibers [32] as photocatalyst for use in photocatalytic applications have been significant investigation topics. Additionally, it has been stated that the h-BN/polymer composite nanofibers have a significant potential for body armor and protective clothing applications [33].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the mechanical features of poly(vinyl) alcohol nanofibers with the addition of boron nitride

Gergeroglu¹,

Sakar²,

Ghorbanpoor³

et al. 2020

Journal of Boron

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Improvement of nano-sized products with boron additives with remarkable properties has become a popular trend for many different application areas. Here, we have reported an efficient poly(vinyl alcohol) (PVA) based composite nanofiber which was functionalized with the hexagonal boron nitride (h-BN) via electrospinning technique, for the first time as far as known, for body-armor and protective clothing applications. PVA-based composite nanofibers containing h-BN with a diameter of approximately 326 nm have shown significant mechanical features compared to pure PVA nanofibers with a diameter of about 223 nm. Mechanical features were investigated by nanoindentation and the results of nanoindentation demonstrated that the elastic modulus of PVA nanofibers increased by 77%, and hardness values of polymeric nanofibers reached ten times more, by the addition of h-BN. FTIR and XRD characterizations approved that there is no chemical change of h-BN when it was integrated into the PVA based composite nanofibers. We exceptionally believe that the achieved results offer a potential lightness and cost-effective strategy for body armor and protective clothing applications in contrast to boron carbide-based body armor products, which have main problems such as weightiness and high-priced.

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“…Electrospinning of colloidal suspension is often challenging, due to the aggregation of solid microparticles [49,50]. In our studies, we effectively avoided CP accumulation during the solution preparation and electrospinning by previously using a high-energy ball-milling technique to reduce the size of CP.…”

Section: Discussionmentioning

confidence: 99%

Oxygen-Releasing Antibacterial Nanofibrous Scaffolds for Tissue Engineering Applications

et al. 2020

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Lack of suitable auto/allografts has been delaying surgical interventions for the treatment of numerous disorders and has also caused a serious threat to public health. Tissue engineering could be one of the best alternatives to solve this issue. However, deficiency of oxygen supply in the wounded and implanted engineered tissues, caused by circulatory problems and insufficient angiogenesis, has been a rate-limiting step in translation of tissue-engineered grafts. To address this issue, we designed oxygen-releasing electrospun composite scaffolds, based on a previously developed hybrid polymeric matrix composed of poly(glycerol sebacate) (PGS) and poly(ε-caprolactone) (PCL). By performing ball-milling, we were able to embed a large percent of calcium peroxide (CP) nanoparticles into the PGS/PCL nanofibers able to generate oxygen. The composite scaffold exhibited a smooth fiber structure, while providing sustainable oxygen release for several days to a week, and significantly improved cell metabolic activity due to alleviation of hypoxic environment around primary bone-marrow-derived mesenchymal stem cells (BM-MSCs). Moreover, the composite scaffolds also showed good antibacterial performance. In conjunction to other improved features, such as degradation behavior, the developed scaffolds are promising biomaterials for various tissue-engineering and wound-healing applications.

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Multifunctional boron nitride nanosheet/polymer composite nanofiber membranes

Cited by 64 publications

References 47 publications

Non-noble metal single-atom catalyst of Co1/MXene (Mo2CS2) for CO oxidation

Non-noble metal single-atom catalyst of Co1/MXene (Mo2CS2) for CO oxidation

Enhancing the mechanical features of poly(vinyl) alcohol nanofibers with the addition of boron nitride

Oxygen-Releasing Antibacterial Nanofibrous Scaffolds for Tissue Engineering Applications

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