Photocatalytic activity of ZnO nanoparticle encapsulated poly(acrylonitrile) nanofibers

Tissera, Nadeeka D.; Wijesena, Ruchira N.; Sandaruwan, Chanaka; Silva, Rohini M. de; Alwis, Aap De; Silva, K.M. Nalin de

doi:10.1016/j.matchemphys.2017.10.035

Cited by 42 publications

(34 citation statements)

References 81 publications

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“…The topographical and surface roughness analysis is the important technique to assess the composite formation or surface passivation (Neghlani, Rafizadeh, & Taromi, 2011; Tissera et al, 2018). The variation in height of the sensor for pristine PAN nanofiber and CQDs‐embedded PAN nanofiber (Figure 3a,b) was taken into account to prove the CQDs passivation increases the surface roughness of the material.…”

Section: Resultsmentioning

confidence: 99%

Carbon quantum dots‐embedded electrospun antimicrobial and fluorescent scaffold for reepithelialization in albino wistar rats

Kanagasubbulakshmi

Lakshmi

Kadirvelu

2020

J Biomedical Materials Res

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A prosthetic scaffold development using fluorescent nanofiber is reported for an enhanced reepithelialization in wistar albino rats. In this study, a novel approach was followed to construct the biocompatible fluorescent nanofiber that will be helpful to monitor the tissue regeneration process. Here, a multifunctional carbon quantum dots (CQDs)‐embedded electrospun polyacrylonitrile (PAN) nanofiber was fabricated and characterized using standard laboratory techniques. The biodegradation ability was assessed by simulated body fluid thereby analyzing porosity and water absorption capacity of the material. The fluorescent scaffold was tested for cytotoxicity and antimicrobial activity using bacterial and fibroblast cells and fluorescent stability was analyzed by bioimaging of animal and bacterial cells. Tissue regeneration capability of the developed scaffold was evaluated using wistar albino rats. Unlike biomicking scaffolds, the CQDs‐embedded PAN‐based substrate has given dual support by enhancing reepithelialization without growth factors and acted as an antimicrobial agent to provide contamination free tissue regeneration. Scaffolds were examined by using histostaining techniques and scanning electron microscopy to observe the reepithelialization in the regenerated tissues. The novel approach for developing infection free soft tissue regeneration was found to be phenomenal in scaffold development.

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Section: Resultsmentioning

confidence: 99%

Carbon quantum dots‐embedded electrospun antimicrobial and fluorescent scaffold for reepithelialization in albino wistar rats

Kanagasubbulakshmi

Lakshmi

Kadirvelu

2020

J Biomedical Materials Res

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“…The presence of NPs leads to changes in the viscoelastic properties and surface tension of the polymer solution, which determine the spun fiber diameter. 35 The PZ0 had a diameter of 395 nm, while that of composite PZ3 was slightly wider (422.3 nm). By increasing the NPs content, the fiber diameter decreased gradually to 261 nm for PZ12 (Figure 2(f)).…”

Section: Morphology and Chemical Structure Of The Pan/zno Compositementioning

confidence: 97%

“…In this study, an approximately 10 wt% PAN solution was enough to prevent the formation of beads. 34,35 The SEM images of PAN/ZnO NF composites clearly showed fibers encapsulating the NPs. The extent of distribution increased with ZnO content in the electrospun solution.…”

Section: Morphology and Chemical Structure Of The Pan/zno Compositementioning

confidence: 99%

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Characterization of multifunctional PAN/ZnO nanofibrous composite filter for fine dust capture and photocatalytic activity

Aamer

Heo

2021

J of Applied Polymer Sci

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The multifunctional air filter, which can provide low resistance to airflow, was prepared from polyacrylonitrile (PAN) nanofibers (NFs) by impregnating zinc oxide (ZnO) nanoparticles (NPs) with photocatalytic activity. Incorporation of ZnO NPs improved the surface roughness and electrostatic charge of electrospun NFs. The PAN/ZnO composite filter with 12 wt%-ZnO showed a filtration efficiency of 98.8% and a pressure drop of 48 Pa for 300 nm aerosol particles, resulting in a quality factor of 0.092 Pa −1. In addition, PAN/ZnO composite exhibited excellent photocatalytic activity in methylene blue (MB) decomposition at 100 and 70.2% efficiencies, respectively, under UV and visible light. K E Y W O R D S applications, separation techniques, synthesis and processing techniques 1 | INTRODUCTION According to the World Health Organization, exposure to air pollutants ranks high among the causes of human mortality (WHO, 2020). Specifically, outdoor air pollution was estimated to cause more than 4 million premature deaths annually. Such magnitude is attributed to inhalation of fine dust particles (otherwise called PM 2.5), associated with several lungs, heart, and respiratory diseases. 1-3 Although much efforts have been devoted to ameliorating PM pollution, the levels of tropospheric PM 2.5 in major cities are still unacceptably high (WHO). Therefore, active researches continue to find the most effective technologies to control PM pollution. Usually, PM is released from industrial, vehicular, and combustion processes, accompanied by some gaseous pollutants such as carbon monoxide (CO), nitrogen oxides (NOx), Sulfur dioxide (SO 2), and volatile organic compounds (VOCs). 3 In particular, several adverse

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“…It has been shown that some super-active sites can be introduced into carbon fibers with iron or nickel additives to achieve the high electrocatalytic performance [14,18]. Oxide-containing carbon fibers have demonstrated the potential for the photocatalytic application [19]. An electrostatic attraction approach using a green and facile solution was used to decorate carbon fibers with nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Processing Iron Oxide Nanoparticle-Loaded Composite Carbon Fiber and the Photosensitivity Characterization

Gan

Panahi

et al. 2019

Fibers

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In this work, iron oxide nanoparticle loaded carbon fibers were prepared by electrohydrodynamic co-casting a polymer and particle mixture followed by carbonization. The precursor used to generate carbon fibers was a linear molecular chain polymer: polyacrylonitrile (PAN). A solution containing iron (II, III) oxide (Fe3O4) particles and the PAN polymer dissolved in dimethylformamide (DMF) was electrohydrodynamically co-cast into fibers. The fibers were stabilized in air and carbonized in hydrogen at elevated temperatures. The microstructure and composition of the fibers were analyzed using scanning electron microscopy (SEM). A quantitative metallographic analysis method was used to determine the fiber size. It was found that the iron (II, III) oxide particles distributed uniformly within the carbonized fibers. Photosensitivity of the particle containing fibers was characterized through measuring the open circuit potential of the fiber samples under the visible light illumination. Potential applications of the fibers for photovoltaics and photonic sensing were discussed.

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Photocatalytic activity of ZnO nanoparticle encapsulated poly(acrylonitrile) nanofibers

Cited by 42 publications

References 81 publications

Carbon quantum dots‐embedded electrospun antimicrobial and fluorescent scaffold for reepithelialization in albino wistar rats

Carbon quantum dots‐embedded electrospun antimicrobial and fluorescent scaffold for reepithelialization in albino wistar rats

Characterization of multifunctional PAN/ZnO nanofibrous composite filter for fine dust capture and photocatalytic activity

Processing Iron Oxide Nanoparticle-Loaded Composite Carbon Fiber and the Photosensitivity Characterization

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