Ultrafine hollow TiO2 nanofibers from core-shell composite fibers and their photocatalytic properties

Ouyang, Wen; Liu, Shuwu; Yao, Kaiqing; Zhao, Long; Cao, Lei; Jiang, Shaohua; Hou, Haoqing

doi:10.1016/j.coco.2018.06.006

Cited by 57 publications

(17 citation statements)

References 31 publications

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“…For a traditional single-fluid blended electrospinning, a syringe pump is exploited to quantitatively transfer the only spinnable working fluid to the monoaxial spinneret, often comprising a metal capillary [ 53 ]. For the coaxial processes, regardless of electrospinning or electrospraying, there are two pumps to simultaneously pump the core and shell working fluids to the double-layer concentric spinneret/spraying head [ 54 , 55 , 56 , 57 , 58 ]. Thus, it is expected that three pumps must be the prerequisite for quantitatively driving the three different working fluids to the core, middle, and outer layer inlets of the spinneret at the same time.…”

Section: Resultsmentioning

confidence: 99%

Core–Shell Eudragit S100 Nanofibers Prepared via Triaxial Electrospinning to Provide a Colon-Targeted Extended Drug Release

et al. 2020

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In this study, a new modified triaxial electrospinning is implemented to generate an Eudragit S100 (ES100)-based core–shell structural nanofiber (CSF), which is loaded with aspirin. The CSFs have a straight line morphology with a smooth surface, an estimated average diameter of 740 ± 110 nm, and a clear core–shell structure with a shell thickness of 65 nm, as disclosed by the scanning electron microscopy and transmission electron microscopy results. Compared to the monolithic composite nanofibers (MCFs) produced using traditional blended single-fluid electrospinning, aspirin presented in both of them amorously owing to their good compatibility. The CSFs showed considerable advantages over the MCFs in providing the desired drug-controlled-release profiles, although both of them released the drug in an erosion mechanism. The former furnished a longer time period of time-delayed-release and a smaller portion released during the first two-hour acid condition for protecting the stomach membranes, and also showed a longer time period of aspirin-extended-release for avoiding possible drug overdose. The present protocols provide a polymer-based process-nanostructure-performance relationship to optimize the reasonable delivery of aspirin.

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Section: Resultsmentioning

confidence: 99%

Core–Shell Eudragit S100 Nanofibers Prepared via Triaxial Electrospinning to Provide a Colon-Targeted Extended Drug Release

et al. 2020

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“…However, for a single-fluid electrospinning process, the treated fluids must be electrospinnable to keep the formation of solid linear nanofibers, or they will be degraded into particles or even wet films [40,55]. The modified coaxial electrospinning, with an unspinnable sheath fluid on a spinnable core fluid, can't be utilized to prepare some advanced nanostructures presently such as hollow fibers from a traditional coaxial processes [56,57], which can be viewed as a special core-shell structure with an empty core. However, all the liquids, containing or not the filament-forming polymers, can be converted as a thin film on the solid core fibers to take advantages of the nanofibers' unique properties.…”

Section: Nanocoating Of Inorganic Materials On Polymeric Fibers For Amentioning

confidence: 99%

Electrospun Environment Remediation Nanofibers Using Unspinnable Liquids as the Sheath Fluids: A Review

Wang

Yang

et al. 2020

Polymers

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Electrospinning, as a promising platform in multidisciplinary engineering over the past two decades, has overcome major challenges and has achieved remarkable breakthroughs in a wide variety of fields such as energy, environmental, and pharmaceutics. However, as a facile and cost-effective approach, its capability of creating nanofibers is still strongly limited by the numbers of treatable fluids. Most recently, more and more efforts have been spent on the treatments of liquids without electrospinnability using multifluid working processes. These unspinnable liquids, although have no electrospinnability themselves, can be converted into nanofibers when they are electrospun with an electrospinnable fluid. Among all sorts of multifluid electrospinning methods, coaxial electrospinning is the most fundamental one. In this review, the principle of modified coaxial electrospinning, in which unspinnable liquids are explored as the sheath working fluids, is introduced. Meanwhile, several typical examples are summarized, in which electrospun nanofibers aimed for the environment remediation were prepared using the modified coaxial electrospinning. Based on the exploration of unspinnable liquids, the present review opens a way for generating complex functional nanostructures from other kinds of multifluid electrospinning methods.

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“…Donmez et al fabricated hafnia hollow nanofibers by atomic layer deposition using electrospun nylon 6,6 nanofibers as templates (Donmez et al, 2013). Hollow TiO 2 nanofibers were fabricated by using oxidized electrospun polyacrylonitrile fibers as templates (Ouyang et al, 2018). Han et al used controllable sacrifice template route to synthesize polyaniline hollow nanofibers with adjustable hollow structure (Han et al, 2019b).…”

Section: Synthesis Strategies Of Hollow Nanofibers Hollow Nanofibers mentioning

confidence: 99%

Synthesis of Hollow Nanofibers and Application on Detecting SF6 Decomposing Products

Zhou

Wei

et al. 2019

Front. Mater.

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Hollow structured nanofibers have attracted much attention in diverse domains owing to their unique physicochemical properties and characteristics. Gas sensing is one of the most promising applications. In electrical engineering, the detection of SF 6 decomposing gas products is significant to monitor the insulation status online of gas insulated switchgear (GIS). This mini-review presents the developments of hollow structured nanofibers in synthesis strategies and gas sensing application, especially in the detection of SF 6 decomposing gas products, including hydrogen disulfide (H 2 S), sulfur dioxide (SO 2), thionyl fluoride (SOF 2), and sulfuryl fluoride (SO 2 F 2). In addition, the gas sensing mechanism of metal oxide hollow nanofibers based gas sensor are discussed.

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Ultrafine hollow TiO2 nanofibers from core-shell composite fibers and their photocatalytic properties

Cited by 57 publications

References 31 publications

Core–Shell Eudragit S100 Nanofibers Prepared via Triaxial Electrospinning to Provide a Colon-Targeted Extended Drug Release

Core–Shell Eudragit S100 Nanofibers Prepared via Triaxial Electrospinning to Provide a Colon-Targeted Extended Drug Release

Electrospun Environment Remediation Nanofibers Using Unspinnable Liquids as the Sheath Fluids: A Review

Synthesis of Hollow Nanofibers and Application on Detecting SF6 Decomposing Products

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