A facile method to prepare zirconia electrospun fibers with different morphologies and their novel composites based on cyanate ester resin

Qin, Dake; Gu, Aijuan; Liang, Guozheng; Yuan, Li

doi:10.1039/c1ra00974e

Cited by 18 publications

(7 citation statements)

References 51 publications

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“…A suitable organometallic or sol-gel metal oxide precursor has been introduced with electrospinning polymer melt in situ, whereas soaking nanofibers in a solvent comprising the desired metal oxide precursor produces a surface coating in the latter case. There are many works reported for the electrospinning of metal oxide nanofibers either by the sol−gel route [113][114][115][116], or by formation of a polymeric metal oxide colloidal dispersion ex situ [117][118][119]. In the case of electrospinning from an inorganic precursor, the high-temperature calcination process causes a reduction in the diameter of the fibers as the sacrificial polymer template is selectively removed.…”

Section: Metal Oxide Nanofibersmentioning

confidence: 99%

Recent Advances in the Synthesis of Metal Oxide Nanofibers and Their Environmental Remediation Applications

Mondal

2017

Inventions

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Recently, wastewater treatment by photocatalytic oxidation processes with metal oxide nanomaterials and nanocomposites such as zinc oxide, titanium dioxide, zirconium dioxide, etc. using ultraviolet (UV) and visible light or even solar energy has added massive research importance. This waste removal technique using nanostructured photocatalysts is well known because of its effectiveness in disintegrating and mineralizing the unsafe organic pollutants such as organic pesticides, organohalogens, PAHs (Polycyclic Aromatic Hydrocarbons), surfactants, microorganisms, and other coloring agents in addition to the prospect of utilizing the solar and UV spectrum. The photocatalysts degrade the pollutants using light energy, which creates energetic electron in the metal oxide and thus generates hydroxyl radical, an oxidative mediator that can oxidize completely the organic pollutant in the wastewater. Altering the morphologies of metal oxide photocatalysts in nanoscale can further improve their photodegradation efficiency. Nanoscale features of the photocatalysts promote enhance light absorption and improved photon harvest property by refining the process of charge carrier generation and recombination at the semiconductor surfaces and in that way boost hydroxyl radicals. The literature covering semiconductor nanomaterials and nanocomposite-assisted photocatalysis-and, among those, metal oxide nanofibers-suggest that this is an attractive route for environmental remediation due to their capability of reaching complete mineralization of organic contaminants under mild reaction conditions such as room temperature and ambient atmospheric pressure with greater degradation performance. The main aim of this review is to highlight the most recent published work in the field of metal oxide nanofibrous photocatalyst-mediated degradation of organic pollutants and unsafe microorganisms present in wastewater. Finally, the recycling and reuse of photocatalysts for viable wastewater purification has also been conferred here and the latest examples given.

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Section: Metal Oxide Nanofibersmentioning

confidence: 99%

Recent Advances in the Synthesis of Metal Oxide Nanofibers and Their Environmental Remediation Applications

Mondal

2017

Inventions

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“…Interestingly, the storage moduli of ZrO 2 (450)/CE and SiO 2 @ZrO 2 (450)/CE composites are greater than those of ZrO 2 (950)/CE and SiO 2 @ZrO 2 (950)/CE composites, and this result seems unexpected because previous study found that ZrO 2 calcinated at high temperature has higher storage modulus. 11 However, reminding that ZrO 2 (450) fibres contain carbon as discussed in the upper part of this paper, this result is easy to be explained as carbon has higher modulus than ZrO 2 , 29 and so the existence of residual carbon element on ZrO 2 (450) and SiO 2 @ZrO 2 (450) fibres will make contribution to increase the modulus.…”

Section: Properties Of Sio 2 @Zro 2 /Ce Compositesmentioning

confidence: 75%

“…9,10 We prepared composites based on porous zirconia (ZrO 2 ) electrospun nanofibres and cyanate ester (CE) resin and found that the resin molecules can enter the pores of ZrO 2 fibres, providing a good physical interaction between ZrO 2 fibres and the resin, and as a result, the composites have good integrated performance. 11 This research has pictured the attractive feature of electrospun ceramic fibres in preparing ceramic/polymer composites; however, in actual applications, the porous electrospun nanofibres have some concrete problems, and consequently, it is difficult to prepare a composite with expected performance. First, the dimensions of the pores on the electrospun ceramic fibres cannot be very large, and so the amount of the resin for entering the pores is very limited, and then the improvement in the interfacial adhesion between the resin and the fibres is not big enough.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of SiO₂ covered ZrO₂ electrospun fibres with controllable structure and their novel high-performance composites with outstanding thermal, mechanical and dielectric properties

Qin

Liang

et al. 2013

Journal of Composite Materials

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New ceramic electrospun fibres, SiO 2 nano-particles covered ZrO 2 fibres (SiO 2 @ZrO 2 ), are facilely fabricated, which have many hydroxyl groups on the surfaces, and their diameters and chemistries are controllable. Based on this, novel SiO 2 @ZrO 2 /cyanate ester composites with desirable interfacial adhesion were prepared, completely overcoming the drawback of ZrO 2 /cyanate ester composites; moreover, the SiO 2 @ZrO 2 /cyanate ester composites show much higher storage moduli and glass transition temperatures as well as lower dielectric constants and losses than ZrO 2 /cyanate ester composites. These interesting results originate from the double effects of the unique structure of SiO 2 @ZrO 2 fibres. Specifically, the active groups on the surfaces of SiO 2 @ZrO 2 fibres bring the chemical bonding with the matrix, while SiO 2 particles on the ZrO 2 fibres provide physical interlocking between the matrix and fibres. These attractive properties of SiO 2 @ZrO 2 /cyanate ester composites suggest that the method proposed herein is effective to prepare electrospun fibres with unique and controllable structure as well as high-performance ceramic/polymer composites.

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“…Li et al [36] studied the phase transformation and morphological evolution of electrospun ZrO 2 nanofibres during thermal annealing and reported that at different thermal cycles, the monoclinic-to-tetragonal transformation temperatures remained virtually unchanged, while the reverse transition temperatures systematically shifted from 924.9 to 978.6 °C with the progress of thermal cycles. Recently, Qin et al [37] fabricated ZrO 2 nanofibres with different morphologies, such as porous or compact fibres, in addition to the observed crystalline structure. Interestingly, Xu et al [38] successfully demonstrated dense zirconia-yttria (ZY), zirconia-silica (ZS) and zirconia-yttria-silica (ZYS) nanofibres as reinforcing elements for dental composites.…”

Section: Zirconia Nanofibresmentioning

confidence: 99%

Bioceramic Nanofibres by Electrospinning

Balu

Singaravelu

Nagiah

2014

Fibers

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Nanoscale three-dimensional (3D) scaffolds offer great promise for improved tissue integration and regeneration by their physical and chemical property enhancements. Electrospinning is a versatile bottom-up technique for producing porous 3D nanofibrous scaffolds that could closely mimic the structure of extracellular matrix. Much work has been committed to the development of this process through the years, and the resultant nanostructures have been subjugated to a wide range of applications in the field of bioengineering. In particular, the application of ceramic nanofibres in hard tissue engineering, such as dental and bone regeneration, is of increased research interest. This mini-review provides a brief overview of the bioceramic nanofibre scaffolds fabricated by electrospinning and highlights some of the significant process developments over recent years with their probable future trends and potential applications as biomedical implants.

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A facile method to prepare zirconia electrospun fibers with different morphologies and their novel composites based on cyanate ester resin

Cited by 18 publications

References 51 publications

Recent Advances in the Synthesis of Metal Oxide Nanofibers and Their Environmental Remediation Applications

Recent Advances in the Synthesis of Metal Oxide Nanofibers and Their Environmental Remediation Applications

Fabrication of SiO₂ covered ZrO₂ electrospun fibres with controllable structure and their novel high-performance composites with outstanding thermal, mechanical and dielectric properties

Bioceramic Nanofibres by Electrospinning

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A facile method to prepare zirconia electrospun fibers with different morphologies and their novel composites based on cyanate ester resin

Cited by 18 publications

References 51 publications

Recent Advances in the Synthesis of Metal Oxide Nanofibers and Their Environmental Remediation Applications

Recent Advances in the Synthesis of Metal Oxide Nanofibers and Their Environmental Remediation Applications

Fabrication of SiO2 covered ZrO2 electrospun fibres with controllable structure and their novel high-performance composites with outstanding thermal, mechanical and dielectric properties

Bioceramic Nanofibres by Electrospinning

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Fabrication of SiO₂ covered ZrO₂ electrospun fibres with controllable structure and their novel high-performance composites with outstanding thermal, mechanical and dielectric properties