A novel catalyst based on electrospun silver-doped silica fibers with ribbon morphology

Kang, Haigang; Zhu, Yihua; Yang, Xin; Jing, Yujia; Lengálová, Anežka; Li, Chungzhong

doi:10.1016/j.jcis.2009.09.050

Cited by 43 publications

(21 citation statements)

References 74 publications

(93 reference statements)

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“…This result suggests that when using acetone-based crosslinking the diffusion of the substrate to and product from the immobilized enzyme within the fiber contributes to the lower apparent activity of the enzyme upon immobilization. Similar effects have been previously reported for immobilization of catalysis using polymer supports [67], and electrospun polymer fibers specifically [68,69]. Limitations due to intra-fiber diffusion are more significant when using acetonebased crosslinking than with vapor-phase or in situ crosslinking (indicated by the effect of enzyme loading) and appears to be the main difference in the immobilization methods.…”

Section: Mass Transfer Effectssupporting

confidence: 76%

Nanofibrous membranes for single-step immobilization of hyperthermophilic enzymes

Tang

Saquing

Sarin

et al. 2014

Journal of Membrane Science

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Section: Mass Transfer Effectssupporting

confidence: 76%

Nanofibrous membranes for single-step immobilization of hyperthermophilic enzymes

Tang

Saquing

Sarin

et al. 2014

Journal of Membrane Science

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“…The obtained results provide insights on how the composites can be improved in a different way. Although electrospinning currently yields low fiber fabrication rate and is not yet cost effective compared with traditional glass fiber production, the electrospun fibers have been investigated for utilizations across various fields . The growing uses of the technique would finally drive its continuous development to make it commercially adequate.…”

Section: Discussionmentioning

confidence: 99%

“…Up to date, ESF, similar to other types of electrospun fibers, have been employed mostly in applications such as catalyst templates, sensors, membranes and tissue scaffolds, to exploit the large surface‐to‐volume ratio . There are only a few studies on mechanical behavior of ESF‐reinforced composites.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of compression‐molded electrospun silica fiber/nylon‐6 composites

Wangworn

Wanakamol

2018

Polymer Composites

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In this study, we utilized electrospun silica fibers (ESFs) as reinforcement in sandwiched nylon-6 composites. The silica fibers were fabricated via electrospinning of sol-gel precursor, prepared from tetraethyl orthosilicate. The process yielded non-woven silica fiber mats with fiber diameter about 350 nm, which is much smaller than conventional glass fibers. Each ESF mat was sandwiched in between two nylon-6 sheets and the layers were compression-molded to produce a composite sample. These composites were prepared with varying silica fiber content, approximately at 0, 0.5, 1.0, and 1.9 wt%. The ESF blended well and chemically bonded with the nylon matrix, as observed through scanning electron microscopy and Fourier transform infrared spectroscopy. Tensile tests revealed that tensile modulus and tensile strength increased with ESF content. Notch Izod impact test showed that impact strength also increased with ESF content. The tensile and impact properties were significantly improved, considering the use of such low silica fiber percentages, which could be due to ultra-fine fiber diameter and fiber continuity. From flexural test, however, flexural modulus and flexural strength decreased slightly by the addition of ESF. Specimen geometry and fabrication process play important roles in governing the composites mechanical behavior. POLYM. COMPOS., 00:000-000,

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“…Electrospinning is a cost effective and straightforward technique to produce nanofibers with diameters in the range of 50 nm to 5 m [1,2]. The resultant nanofiber mats are attractive materials for their superior specific surface area and high porosity, which have promising applications in filter [3][4][5][6], catalyst [7][8][9], sensor [10][11][12], and biomedical materials [13][14][15]. In the process of electrospinning, a continuous charged jet is initiated when the electric field force exerted on the pendent drop exceeds its own surface tension.…”

Section: Introductionmentioning

confidence: 99%

Effects of Electrode Reversal on the Distribution of Naproxen in the Electrospun Cellulose Acetate Nanofibers

Kang

Che

et al. 2014

Journal of Nanomaterials

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Naproxen (NAP)/cellulose acetate hybrid nanofibers were prepared by positive and reversed emitting electrodes electrospinning setups. The morphology and structure of the resultant nanofibers were characterized, and the NAP release behaviors were investigated. It was found that NAP dispersed in the CA matrix in molecular level, and no aggregation and dimers of NAP were found in the resultant NAP/CA hybrid nanofibers due to the formation of hydrogen bonds between NAP and CA. The nanofibers obtained by reversed emitting electrode electrospinning setup have a thicker diameter and a faster NAP release rate compared with those obtained by positive emitting electrode electrospinning setup. The faster drug release of NAP from nanofibers prepared by reversed emitting electrode electrospinning is due to the fact that the concentration of NAP molecules near the surface of the nanofibers is relatively higher than that of the nanofibers prepared by positive emitting electrode electrospinning setup. The effects of the electrode polarity on the distribution of drugs in nanofibers can be used to prepare hybrid electrospun fibers of different drug release rates, which may found applications in biomedical materials.

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A novel catalyst based on electrospun silver-doped silica fibers with ribbon morphology

Cited by 43 publications

References 74 publications

Nanofibrous membranes for single-step immobilization of hyperthermophilic enzymes

Nanofibrous membranes for single-step immobilization of hyperthermophilic enzymes

Mechanical properties of compression‐molded electrospun silica fiber/nylon‐6 composites

Effects of Electrode Reversal on the Distribution of Naproxen in the Electrospun Cellulose Acetate Nanofibers

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