Preparation of mesoporous carbon nanofibers from the electrospun poly(furfuryl alcohol)/poly(vinyl acetate)/silica composites

Shen, Jingyi; Wang, Meijing; Wu, Yi-nan; Li, Fengting

doi:10.1039/c4ra00910j

Cited by 11 publications

(9 citation statements)

References 16 publications

(15 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the temperature increased, the peaks at 1720 and 1672 cm −1 decreased, and at 380 • C only the η 2 (C=O) mode of activation was present (peak at 1600 cm −1 ). This suggests that, at this temperature, we have an optimum activation of the C=O bond, which might favor the formation of the furfuryl alcohol [18,46,47]. Furthermore, this experiment demonstrates that adsorbed furfural on MgO is stable even at high temperatures, as was already confirmed by Albonetti et al [22].…”

Section: Catalyst Preparationsupporting

confidence: 82%

Tandem Hydrogenation/Hydrogenolysis of Furfural to 2-Methylfuran over a Fe/Mg/O Catalyst: Structure–Activity Relationship

et al. 2019

View full text Add to dashboard Cite

The hydrodeoxygenation of furfural (FU) was investigated over Fe-containing MgO catalysts, on a continuous gas flow reactor, using methanol as a hydrogen donor. Catalysts were prepared either by coprecipitation or impregnation methods, with different Fe/Mg atomic ratios. The main product was 2-methylfuran (MFU), an important highly added value chemical, up to 92% selectivity. The catalyst design helped our understanding of the impact of acid/base properties and the nature of iron species in terms of catalytic performance. In particular, the addition of iron on the surface of the basic oxide led to (i) the increase of Lewis acid sites, (ii) the increase of the dehydrogenation capacity of the presented catalytic system, and (iii) to the significant enhancement of the FU conversion to MFU. FTIR studies, using methanol as the chosen probe molecule, indicated that, at the low temperature regime, the process follows the typical hydrogen transfer reduction, but at the high temperature regime, methanol dehydrogenation and methanol disproportionation were both presented, whereas iron oxide promoted methanol transfer. FTIR studies were performed using furfural and furfuryl alcohol as probe molecules. These studies indicated that furfuryl alcohol activation is the rate-determining step for methyl furan formation. Our experimental results clearly demonstrate that the nature of iron oxide is critical in the efficient hydrodeoxygenation of furfural to methyl furan and provides insights toward the rational design of catalysts toward C–O bonds’ hydrodeoxygenation in the production of fuel components.

show abstract

Section: Catalyst Preparationsupporting

confidence: 82%

Tandem Hydrogenation/Hydrogenolysis of Furfural to 2-Methylfuran over a Fe/Mg/O Catalyst: Structure–Activity Relationship

et al. 2019

View full text Add to dashboard Cite

show abstract

“…To achieve outstanding sound-insulation property, many efforts were contributed for fabrication of hierarchical scale structure. A number of soundproof composites has been developed likes wood-waste tire rubber composite [ 13 ], inorganic particles/polymer composites and nano-composites, including polypropylene/CaCO 3 [ 14 ], resin/hollow glass bead [ 15 ], poly(vinyl chloride)/mica [ 16 ], rubber/carbon nanotube [ 17 ], polyvinylpyrrolidone/graphene oxide [ 18 ], poly(vinyl acetate) mesoporous carbon [ 19 ], and so on. Besides, the porous structure [ 20 ] and honeycomb structure [ 21 , 22 ] can also enhance the sound insulation performance.…”

Section: Introductionmentioning

confidence: 99%

Morphological Structure, Rheological Behavior, Mechanical Properties and Sound Insulation Performance of Thermoplastic Rubber Composites Reinforced by Different Inorganic Fillers

et al. 2018

View full text Add to dashboard Cite

Abstract:The application area of a sound insulation material is highly dependent on the technology adopted for its processing. In this study, thermoplastic rubber (TPR, polypropylene/ethylene propylene diene monomer) composites were simply prepared via an extrusion method. Two microscale particles, CaCO 3 and hollow glass microspheres (HGW) were chosen to not only enhance the sound insulation but also reinforced the mechanical properties. Meanwhile, the processing capability of composites was confirmed. SEM images showed that the CaCO 3 was uniformly dispersed in TPR matrix with~3 µm scale aggregates, while the HGM was slightly aggregated to~13 µm scale. The heterogeneous dispersion of micro-scale fillers strongly affected the sound transmission loss (STL) value of composites. The STL values of TPR composites with 40 wt % CaCO 3 and 20 wt % HGM composites were about 12 dB and 7 dB higher than that of pure TPR sample, respectively. The improved sound insulation performances of the composites have been attributed to the enhanced reflection and dissipate sound energy in the heterogeneous composite. Moreover, the mechanical properties were also enhanced. The discontinued sound impedance and reinforced stiffness were considered as crucial for the sound insulation.

show abstract

“…Figure 1 shows the p-XRD data and Raman spectrum of the CCNF-f and SCCNF-f-AW. Image in figure 1(a) represents the typical p-XRD spectrum of CCNF-f with the peaks for (002) and (100) planes appearing at 24.2 • and 43 • , respectively, corresponding to the partially graphitic nature of the sample [53,54]. The broadness could be attributed to the cross-linked carbon resulting in amorphous carbonization of the resorcinol-glutaraldehyde crosslinkage.…”

Section: Resultsmentioning

confidence: 99%

3D x-ray microtomography investigations on the bimodal porosity and high sulfur impregnation in 3D carbon foam for Li–S battery application

et al. 2022

View full text Add to dashboard Cite

Lithium-sulfur (Li-S) batteries, regarded as one of the most promising alternatives to current state-of-the-art rechargeable Li-ion battery technologies, have received tremendous attention as potential candidates for next-generation portable electronics and the rapidly advancing EV market. However, substantial capacity decay, miserable cycle life, and meagre stability remained critical challenges. More specifically, shuttling of polysulfide [Li2Sx (3<x ≤ 8)] species severely hinders the cycle performance resulting in capacity fade and cycling instability. In the present work, a highly conducting 3Dimensional carbon nanofiber foam (CCNF-f) has been synthesized using the lyophilization method followed by thermal pyrolysis. The highly porous foam materials have a bimodal porosity distribution in the nano and micro regime and were successfully investigated to serve as a potential host for sulfur species intended for Li-S battery application. 3D X-ray microtomography was employed to estimate the nature of sulfur impregnation and distribution in the 3D porous networks. On utilizing the final product as cathode material, sulfur impregnated carbonized CNF foam and modified the separator with functionalized multiwalled carbon nanotubes (SCCNF-f-AW-CNT) delivered a specific capacity of ~845 mAh g-1 at 100 mA g-1.

show abstract

Preparation of mesoporous carbon nanofibers from the electrospun poly(furfuryl alcohol)/poly(vinyl acetate)/silica composites

Abstract: Mesoporous carbon nanofibers were prepared by carbonizing the poly(furfuryl alcohol)/poly(vinyl acetate)/silica composite. Furfuryl alcohol was employed as a carbon source and was electrospun for the first time. The typical product presented favorable properties to be a novel adsorbent.

Cited by 11 publications

References 16 publications

Tandem Hydrogenation/Hydrogenolysis of Furfural to 2-Methylfuran over a Fe/Mg/O Catalyst: Structure–Activity Relationship

Tandem Hydrogenation/Hydrogenolysis of Furfural to 2-Methylfuran over a Fe/Mg/O Catalyst: Structure–Activity Relationship

Morphological Structure, Rheological Behavior, Mechanical Properties and Sound Insulation Performance of Thermoplastic Rubber Composites Reinforced by Different Inorganic Fillers

3D x-ray microtomography investigations on the bimodal porosity and high sulfur impregnation in 3D carbon foam for Li–S battery application

Contact Info

Product

Resources

About