Ultrasound and water flow driven piezophototronic effect in self-polarized flexible α-Fe2O3 containing PVDF nanofibers film for enhanced catalytic oxidation

Orudzhev, Farid; Ramazanov, Shikhgasan; Sobola, Dinara; Kaspar, Pavel; Trčka, Tomáš; Částková, Klára; Kaštyl, Jaroslav; Зверева, И. А.; Wang, Chuanyi; Selimov, Daud; Gulakhmedov, Rashid; Abdurakhmanov, Magomed; Shuaibov, Abdulatip; Kadiev, Makhmud

doi:10.1016/j.nanoen.2021.106586

Cited by 71 publications

(36 citation statements)

References 42 publications

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“…Nowadays, nanofibers development, production and their properties characterization are of high interest among scientists [ 1 , 2 , 3 , 4 , 5 , 6 ], health doctors [ 4 , 7 , 8 , 9 ], and even between general public thanks to coronavirus pandemic situation (causing COVID-19 illness) and use of nanofibers in face masks [ 10 , 11 ] to prevent health of each individual. Another great use of fibers can be for energy harvesting or as sensors from fiber mats as the fibers are from piezoelectric material.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Characterization of PVDF Nanofibers at Macro- and Nanolevel

et al. 2022

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This study is focused on the characterization and investigation of polyvinylidene fluoride (PVDF) nanofibers from the point of view of macro- and nanometer level. The fibers were produced using electrostatic spinning process in air. Two types of fibers were produced since the collector speed ( 300rpm and 2000rpm) differed as the only one processing parameter. Differences in fiber’s properties were studied by scanning electron microscopy (SEM) with cross-sections observation utilizing focused ion beam (FIB). The phase composition was determined by Fourier-transform infrared spectroscopy (FTIR) and Raman spectroscopy. The crystallinity was determined by differential scanning calorimetry (DSC), and chemical analysis of fiber’s surfaces and bonding states were studied using X-ray photoelectron spectroscopy (XPS). Other methods, such as atomic force microscopy (AFM) and piezoelectric force microscopy (PFM), were employed to describe morphology and piezoelectric response of single fiber, respectively. Moreover, the wetting behavior (hydrophobicity or hydrophilicity) was also studied. It was found that collector speed significantly affects fibers alignment and wettability (directionally ordered fibers produced at 2000rpm almost super-hydrophobic in comparison with disordered fibers spun at 300rpm with hydrophilic behavior) as properties at macrolevel. However, it was confirmed that these differences at the macrolevel are closely connected and originate from nanolevel attributes. The study of single individual fibers revealed some protrusions on the fiber’s surface, and fibers spun at 300rpm had a core-shell design, while fibers spun at 2000rpm were hollow.

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Section: Introductionmentioning

confidence: 99%

Comprehensive Characterization of PVDF Nanofibers at Macro- and Nanolevel

et al. 2022

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“…The nanomaterials include zero-dimensional nanoparticles (all three dimensions are in the range of 1–100 nm, for example, quantum dots), one-dimensional materials (one of the dimensions is on a nanometer scale, examples include nanofibers, nanorods, nanotubes, nanowires), and two-dimensional nanosheets (all three dimensions are >100 nm) [ 4 ]. Among these, nanofibers, especially synthesized by electrospinning for a predominant electroactive phase, contribute extraordinary features to nanotechnology’s development [ 5 ]. Nanofibers are unique among the numerous types of nanomaterials due to their remarkably high specific surface area and porosity.…”

Section: Introductionmentioning

confidence: 99%

Electrospun Nanofiber-Based Membranes for Water Treatment

et al. 2022

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Water purification and water desalination via membrane technology are generally deemed as reliable supplementaries for abundant potable water. Electrospun nanofiber-based membranes (ENMs), benefitting from characteristics such as a higher specific surface area, higher porosity, lower thickness, and possession of attracted broad attention, has allowed it to evolve into a promising candidate rapidly. Here, great attention is placed on the current status of ENMs with two categories according to the roles of electrospun nanofiber layers: (i) nanofiber layer serving as a selective layer, (ii) nanofiber layer serving as supporting substrate. For the nanofiber layer’s role as a selective layer, this work presents the structures and properties of conventional ENMs and mixed matrix ENMs. Fabricating parameters and adjusting approaches such as polymer and cosolvent, inorganic and organic incorporation and surface modification are demonstrated in detail. It is crucial to have a matched selective layer for nanofiber layers acting as a supporting layer. The various selective layers fabricated on the nanofiber layer are put forward in this paper. The fabrication approaches include inorganic deposition, polymer coating, and interfacial polymerization. Lastly, future perspectives and the main challenges in the field concerning the use of ENMs for water treatment are discussed. It is expected that the progress of ENMs will promote the prosperity and utilization of various industries such as water treatment, environmental protection, healthcare, and energy storage.

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“…The conventional fibers used for protective equipment are: cotton, wool, viscose, and some high-performance fibers such as polyamide (Nomex ® ), polyimide (Kevlar ® and Twaron ® ), polybenzimidazole (PBI ® ), and polybenzoxazole (Zylon ® ). Due to their huge specific surface area and micro porous structure, nanofibrous materials are used in advanced fields such as protective textiles, nanocomposites, sensors, optical devices, tissue engineering scaffolds, and drug delivery systems [ 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. For specific protective equipment, for example, firefighters’ gear, it is necessary to use chemically modified materials such as fire-retarded wool and cotton, fire- and high-temperature-resistant polyesters and/or inherently fire-resistant polymers such as aramid, poly(aramid-imide), polyimide, polybenzimidazole, etc.…”

Section: Introductionmentioning

confidence: 99%

Phosphorylated Poly(vinyl alcohol) Electrospun Mats for Protective Equipment Applications

Serbezeanu¹,

Vlad‐Bubulac²,

Onofrei³

et al. 2022

Nanomaterials

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The development of intelligent materials for protective equipment applications is still growing, with enormous potential to improve the safety of personnel functioning in specialized professions, such as firefighters. The design and production of such materials by the chemical modification of biodegradable semisynthetic polymers, accompanied by modern manufacturing techniques such as electrospinning, which may increase specific properties of the targeted material, continue to attract the interest of researchers. Phosphorus-modified poly(vinyl alcohol)s have been, thus, synthesized and utilized to prepare environmentally friendly electrospun mats. Poly(vinyl alcohol)s of three different molecular weights and degrees of hydrolysis were phosphorylated by polycondensation reaction in solution in the presence of phenyl dichlorophosphate in order to enhance their flame resistance and thermal stability. The thermal behavior and the flame resistance of the resulting phosphorus-modified poly(vinyl alcohol) products were investigated by thermogravimetric analysis and by cone calorimetry at a micro scale. Based on the as-synthesized phosphorus-modified poly(vinyl alcohol)s, electrospun mats were successfully fabricated by the electrospinning process. Rheology studies were performed to establish the optimal conditions of the electrospinning process, and scanning electron microscopy investigations were undertaken to observe the morphology of the phosphorus-modified poly(vinyl alcohol) electrospun mats.

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Ultrasound and water flow driven piezophototronic effect in self-polarized flexible α-Fe2O3 containing PVDF nanofibers film for enhanced catalytic oxidation

Cited by 71 publications

References 42 publications

Comprehensive Characterization of PVDF Nanofibers at Macro- and Nanolevel

Comprehensive Characterization of PVDF Nanofibers at Macro- and Nanolevel

Electrospun Nanofiber-Based Membranes for Water Treatment

Phosphorylated Poly(vinyl alcohol) Electrospun Mats for Protective Equipment Applications

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