Enhanced photocatalytic activity of TiO2-incorporated nanofiber membrane by oxygen plasma treatment

Park, S.Y.; Lee, H.U.; Ahn, Kung; Kim, J.P.; Jin, Jong Sung; Lee, J.; Jeong, Se–Young; Cho, C.R.

doi:10.1016/j.tsf.2011.04.051

Cited by 11 publications

(10 citation statements)

References 19 publications

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“…In general, the atmospheric plasma with oxygen gas (OAP) treatment is considered to be a favorable approach to degrade the polymer at the surface of organic-inorganic composites and enhance the hydrophilicity of the fibrous mats. However, as the OAP process partly provoked degradation of PCL throughout the synthetic pathway, OAP-treated samples exhibited deteriorated tensile strength in contrast to the relative untreated one [11]. According to the results of the aforementioned studies, as the TiO 2 content increased in the composite photocatalysts, the surface roughness, reinforcement and photocatalytic efficiency of the nanofibers increased, too.…”

Section: Polycaprolactone (Pcl)mentioning

confidence: 99%

“…Generally, it is advisable that the selected depositing method does not provoke a deterioration of the photocatalytic activity of TiO 2 . Several methods have been proposed in the literature, including sol-gel method [8] consisting primarily of film casting [4] and dip-coating methods [9], hydrothermal treatment [10], plasma treatment [11], electrospinning [12], electrospraying [13] and 3D printing [14]. The sol-gel method for the nano-sized TiO 2 particles is based on the hydrolysis of titanium alkoxides (Ti(O-E), Ti(i-OP) 4 or Ti(O-nBu) 4 ) at room temperature.…”

Section: Biodegradable Polymers Combined With Tio 2 For Enhanced Photocatalytic Activitymentioning

confidence: 99%

“…Most experiments were carried out under UV light radiation with treatment time ranging from 80-300 min according to the targeted pollutants and the photocatalytic material used. Moreover, the reusability of materials was monitored up to three cycles exhibiting satisfactory results [5,11,12,[46][47][48].…”

Section: Photocatalytic Performancementioning

confidence: 99%

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Insights into Biodegradable Polymer-Supported Titanium Dioxide Photocatalysts for Environmental Remediation

et al. 2021

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During the past two decades, immobilization of titanium dioxide (TiO2), a well-known photocatalyst, on several polymeric substrates has extensively gained ground since it limits the need of post-treatment separation stages. Taking into account the numerous substrates tested for supporting TiO2 photocatalysts, the use of biodegradable polymer seems a hopeful option owing to its considerable merits, including the flexible nature, low price, chemical inertness, mechanical stability and wide feasibility. The present review places its emphasis on recently published research articles (2011–2021) and exhibits the most innovative studies facilitating the eco-friendly biodegradable polymers to fabricate polymer-based photocatalysts, while the preparation details, photocatalytic performance and reuse of the TiO2/polymer photocatalysts is also debated. The biodegradable polymers examined herein comprise of chitosan (CS), cellulose, alginate, starch, poly(lactid acid) (PLA), polycaprolactone (PCL) and poly(lactide-co-glycolide) (PLGA), while an emphasis on the synthetical pathway (dip-coating, electrospinning, etc.) of the photocatalysts is provided.

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Section: Polycaprolactone (Pcl)mentioning

confidence: 99%

Section: Biodegradable Polymers Combined With Tio 2 For Enhanced Photocatalytic Activitymentioning

confidence: 99%

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Insights into Biodegradable Polymer-Supported Titanium Dioxide Photocatalysts for Environmental Remediation

et al. 2021

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“…Interestingly, dye degradation (usually denoted by changes of color or discoloration phenomena) can be observed even by the naked eye and easily monitored by UV-Vis absorption measurements. Some of the most widely used organic dyes are azo dyes, such as Reactive Black 5 (RB5), Reactive Red 120 (RR120), Reactive Orange 16 (RO16), among others [ 25 , 26 , 27 , 28 ]. Additionally, it is nowadays known that pharmaceutical molecules are not only beneficial drugs for the cure of diseases, but also are possible water contaminants.…”

Section: Hybrid Photocatalysts Based On Polymer Nanofibers In the Deg...mentioning

confidence: 99%

On the Versatile Role of Electrospun Polymer Nanofibers as Photocatalytic Hybrid Materials Applied to Contaminated Water Remediation: A Brief Review

et al. 2022

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A wide variety of materials, strategies, and methods have been proposed to face the challenge of wastewater pollution. The most innovative and promising approaches include the hybrid materials made of polymeric nanofibers and photocatalytic nanoparticles. Electrospun nanofibers with unique properties, such as nanosized diameter, large specific surface area, and high aspect ratio, represent promising materials to support and stabilize photocatalytic nanosized semiconductors. Additionally, the role performed by polymer nanofibers can be extended even further since they can act as an active medium for the in situ synthesis of photocatalytic metal nanoparticles or contribute to pollutant adsorption, facilitating their approach to the photocatalytic sites and their subsequent photodegradation. In this paper, we review the state of the art of electrospun polymer/semiconductor hybrid nanofibers possessing photocatalytic activity and used for the remediation of polluted water by light-driven processes (i.e., based on photocatalytic activity). The crucial role of polymer nanofibers and their versatility in these types of procedures are emphasized.

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“…A majority of the reports on photocatalytic membranes available in the literature used nanoparticles of either TiO 2 or ZnO deposited on conventionally used ceramic or polymer membranes [114,[117][118][119][120][121][122][123][124][125][126][127][128][129][130][131][132]. However, for nanomaterials Fig.…”

Section: Multi-functional Membranesmentioning

confidence: 99%

Nanostructured Zinc Oxide for Water Treatment

Baruah¹,

Pal²,

Dutta

2012

NANOASIA

143

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Environmental pollution and industrialization on a global scale have drawn attention to the vital need for developing new hygienically friendly purification technologies. Existing wastewater treatment technologies demand high capital investment and operation & maintenance cost, and large area. Cost-effective treatment of pollutants requires the transformation of hazardous substances into benign forms and the subsequent development of effective risk management strategies from harmful effects of pollutants that are highly toxic, persistent, and difficult to treat. Application of nanotechnology that results in improved water treatment options might include removal of the finest contaminants from water (< 300 nm) and "smart materials" or "reactive surface coatings" with engineered specificity to a certain pollutant that destroy, transform or immobilize toxic compounds. Nanomaterials have been gaining increasing interest in the area of environmental remediation mainly due to their enhanced surface and also other specific changes in their physical, chemical and biological properties that develop due to size effects. Heterogeneous photocatalytic systems via metal oxide semiconductors like TiO 2 and ZnO, are capable of operating effectively and efficiently for waste water treatment which has been discussed along with other nanotechnology routes that can be useful for water treatments. Multifunctional photocatalytic membranes using ZnO nanostructures are considered advantageous over freely suspended nanoparticles due to the ease of its removal from the purified water. A short discussion on the study of charge transfer mechanisms during photocatalytic reactions has also been included.

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Enhanced photocatalytic activity of TiO2-incorporated nanofiber membrane by oxygen plasma treatment

Cited by 11 publications

References 19 publications

Insights into Biodegradable Polymer-Supported Titanium Dioxide Photocatalysts for Environmental Remediation

Insights into Biodegradable Polymer-Supported Titanium Dioxide Photocatalysts for Environmental Remediation

On the Versatile Role of Electrospun Polymer Nanofibers as Photocatalytic Hybrid Materials Applied to Contaminated Water Remediation: A Brief Review

Nanostructured Zinc Oxide for Water Treatment

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