Photocatalytic self-cleaning poly( l -lactide) materials based on a hybrid between nanosized zinc oxide and expanded graphite or fullerene

Virovska, Daniela; Paneva, Dilyana; Manolova, Nevena; Rashkov, Iliya; Karashanova, Daniela

doi:10.1016/j.msec.2015.11.029

Cited by 35 publications

(14 citation statements)

References 40 publications

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“…The surface not only has a low surface energy but also exhibits a hierarchical roughness on at least two scales (i.e., micrometer and nanometer). 589 In this case, the self-cleaning effect is achieved through rolling motion of water droplets on the surface of the mat. Three basic requirements are involved for the surface: (i) a high static water contact angle (WCA, >150°), (ii) a low adhesion to the water droplets such that the droplets can easily move even at low (<10°) inclination for the surface, and (iii) a lower adhesion to the dust than that to the water droplets so that the water droplets can actively pick up dust particles.…”

Section: Electrospun Nanofibers With “Smart” Propertiesmentioning

confidence: 99%

Electrospinning and Electrospun Nanofibers: Methods, Materials, and Applications

et al. 2019

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Electrospinning is a versatile and viable technique for generating ultrathin fibers. Remarkable progress has been made with regard to the development of electrospinning methods and engineering of electrospun nanofibers to suit or enable various applications. We aim to provide a comprehensive overview of electrospinning, including the principle, methods, materials, and applications. We begin with a brief introduction to the early history of electrospinning, followed by discussion of its principle and typical apparatus. We then discuss its renaissance over the past two decades as a powerful technology for the production of nanofibers with diversified compositions, structures, and properties. Afterward, we discuss the applications of electrospun nanofibers, including their use as “smart” mats, filtration membranes, catalytic supports, energy harvesting/conversion/storage components, and photonic and electronic devices, as well as biomedical scaffolds. We highlight the most relevant and recent advances related to the applications of electrospun nanofibers by focusing on the most representative examples. We also offer perspectives on the challenges, opportunities, and new directions for future development. At the end, we discuss approaches to the scale-up production of electrospun nanofibers and briefly discuss various types of commercial products based on electrospun nanofibers that have found widespread use in our everyday life.

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Section: Electrospun Nanofibers With “Smart” Propertiesmentioning

confidence: 99%

Electrospinning and Electrospun Nanofibers: Methods, Materials, and Applications

et al. 2019

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“…1 Concerning the strategies for the purification of water contaminated with heavy metals, the use of systems based on polymer membranes has been extensively preferred due to suitable mechanical performance that these materials provide for highpressure processes and their versatility of thermal and chemical properties. [18][19][20][21][22][23][24] Three main approaches for fabricating polymer/ZnO fibrous membranes have been explored: (1) electrospinning of a polymer solution containing ZnO nanoparticles, 22,[25][26][27][28] (2) deposition of ZnO nanoparticles onto electrospun membranes by several methods, namely, impregnation, electrospraying, or similar techniques, [29][30][31][32][33][34][35] and in a minor extent (3) coaxial electrospinning. [2][3][4] In this context, electrohydrodynamic techniques provide excellent approaches for the design of nanofibrous polymeric membranes with tailored morphology.…”

Section: Introductionmentioning

confidence: 99%

Core–sheath nanofibrous membranes based on poly(acrylonitrile‐butadiene‐styrene), polyacrylonitrile, and zinc oxide nanoparticles for photoreduction of Cr(VI) ions in aqueous solutions

Castro‐Ruíz¹,

Rodríguez-Tobías²,

Abraham

et al. 2019

J of Applied Polymer Sci

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This investigation addresses the design of a series of poly(acrylonitrile-butadiene-styrene)/polyacrylonitrile-zinc oxide(ABS/PAN-ZnO) membranes by coaxial electrospinning. In the first instance, an optimization of ABS and PAN electrospinning was performed, thus establishing suitable compositional and processing parameters for obtaining homogenous fibers. Then, coaxial electrospinning of ABS and PAN solutions containing different amount of ZnO nanoparticles was carried out. The coaxial morphology of the nanofibers and ZnO distribution/dispersion were studied by the combination of several techniques such as scanning electron microscopy, X-ray energy dispersive analysis, contact angle, and thermogravimetric analysis. The performance of the obtained membranes for chromium (VI) ions removal from aqueous solutions was assessed by photoreduction using ultraviolet-visible spectroscopy. Electrospun mats composed of ABS (core)/PAN (sheath) embedded with 30 wt % of ZnO nanoparticles exhibited the highest chromium photoreduction (about 80%), suggesting the potential use of these membranes as filters for water purification.

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“…As a result, more separated photogenerated holes and electrons could take part in photocatalytic reaction, increasing photocatalytic efficiency. Then, fullerene could enhance the light absorption (both UV and visible light) because it is an excellent photo-response material (300~700 nm), wherein elevated light energy utilization excites more electrons from VB to CB [ 33 , 34 ]. In respect to photo-response characteristics, it must also be mentioned that fullerene could not shift the adsorption edge of pristine photocatalyst unless the introduction of fullerene changed the structure of semiconductor [ 35 , 36 , 37 ].…”

Section: Role Of Fullerenementioning

confidence: 99%

Recent Progress on Fullerene-Based Materials: Synthesis, Properties, Modifications, and Photocatalytic Applications

et al. 2020

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Solar light is an inexpensive energy source making up for energy shortage and solving serious environmental problems. For efficient utilization of solar energy, photocatalytic materials have attracted extensive attention over the last decades. As zero-dimensional carbon nanomaterials, fullerenes (C60, C70, etc.) have been extensively investigated for photocatalytic applications. Due to their unique properties, fullerenes can be used with other semiconductors as photocatalyst enhancers, and also as novel photocatalysts after being dispersed on non-semiconductors. This review summarizes fullerene-based materials (including fullerene/semiconductors and fullerene/non-semiconductors) for photocatalytic applications, such as water splitting, Cr (VI) reduction, pollutant degradation and bacterial disinfection. Firstly, the optical and electronic properties of fullerene are presented. Then, recent advances in the synthesis and photocatalytic mechanisms of fullerene-based photocatalysts are summarized. Furthermore, the effective performances of fullerene-based photocatalysts are discussed, mainly concerning photocatalytic H2 generation and pollutant removal. Finally, the current challenges and prospects of fullerene-based photocatalysts are proposed. It is expected that this review could bring a better understanding of fullerene-based photocatalysts for water treatment and environmental protection.

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Photocatalytic self-cleaning poly( l -lactide) materials based on a hybrid between nanosized zinc oxide and expanded graphite or fullerene

Cited by 35 publications

References 40 publications

Electrospinning and Electrospun Nanofibers: Methods, Materials, and Applications

Electrospinning and Electrospun Nanofibers: Methods, Materials, and Applications

Core–sheath nanofibrous membranes based on poly(acrylonitrile‐butadiene‐styrene), polyacrylonitrile, and zinc oxide nanoparticles for photoreduction of Cr(VI) ions in aqueous solutions

Recent Progress on Fullerene-Based Materials: Synthesis, Properties, Modifications, and Photocatalytic Applications

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