Photocatalytic activities of poly(methyl methacrylate)/titanium dioxide nanofiber mat

Köysüren, Özcan; Köysüren, Hafize Nagehan

doi:10.1080/10601325.2017.1261619

Cited by 19 publications

(11 citation statements)

References 40 publications

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“…Although there are fewer reports on the inclusion of photocatalysts for environmental remediation through advanced oxidation processes (AOPs), researchers have been long studying the inclusion of photocatalyst for membrane performance and properties enhancement and some conclusions can be adapted for the photocatalytic property. Among them, the photocatalyst mass was the most studied variable.…”

Section: Introductionmentioning

confidence: 99%

Solution mixing preparation of PVDF/ZnO polymeric composite films engineered for heterogeneous photocatalysis

Zanrosso

Piazza

Lansarin

2019

J of Applied Polymer Sci

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Despite the efforts of the scientific community, carrying out photocatalyst immobilization so that industrial application of photocatalysis becomes economically feasible is still a challenge to be overcome. In this work, polyvinylidene fluoride (PVDF)/ZnO composites were prepared by solution mixing based on solid knowledge of membrane technology and with the help of a powerful experimental design for systematic evaluation of the interaction among variables. A strategy for variable screening was used, followed by a complete evaluation at two levels, leading to predictive models. As a result, photocatalyst amount, pore agent concentration, and wet thickness were the most significant in the target molecule discoloration. With this, it was possible to obtain a 40 and 186% enhancement in photocatalytic efficiency compared to previous results and simple photolysis, respectively. Finally, the samples were characterized by FTIR‐ATR, XRD, and SEM and chemical, crystalline and morphological differences were observed both with nanoparticle and pore agent incorporation. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48417.

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Section: Introductionmentioning

confidence: 99%

Solution mixing preparation of PVDF/ZnO polymeric composite films engineered for heterogeneous photocatalysis

Zanrosso

Piazza

Lansarin

2019

J of Applied Polymer Sci

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“…Metilen mavisinin fotokatalitik bozunumu, C t /C 0 eşitliğinden yararlanılarak gerçekleştirilmiştir. Bu eşitlikteki C 0 , metilen mavisinin başlangıç derişimini ve C t ise metilen mavisinin UVA ışığına ve doğal güneş ışığına maruz kaldıktan sonraki derişimini ifade etmektedir [33]. Tüm boya bozunum deneyleri üç kez tekrarlanmıştır ve sonuçları standart sapmaları ile birlikte verilmiştir.…”

Section: Malzemeler Ve Yöntemler (Materials and Methods)unclassified

Polivinil borat/TiO2 Nanokompozitlerin Fotokataliz Uygulaması

Köysüren

2019

Journal of Boron

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ÖZETPolivinil borat (PVB)/titanyum dioksit (TiO 2 ) nanokompozitler, polivinil alkol ve borik asit'in TiO 2 nanoparçacık varlığında çapraz bağlanma reaksiyonu ile sentezlenmiştir. Ağırlıkça %0, 10, 20 ve 30 oranında TiO 2 nanoparçacık içeren nanokompozitler elde edilmiştir ve hazırlanan nanokompozitlerin fotokatalitik etkinliği metilen mavisinin sudaki çözeltisinin UVA ışığı ve doğal güneş ışığı altındaki bozunumu ile ayrı ayrı çalışılmıştır. TiO 2 katkısı ile PVB'nin fotokatalitik etkinliği artmıştır. En yüksek fotokatalitik etkinlik, ağırlıkça %30 oranında TiO 2 içeren nanokompozit ile elde edilmiştir. FTIR analizi ile nanokompozitin kimyasal yapısı incelenmiştir. FTIR analizi ile, PVB ve TiO 2 içeren PVB nanokompozitlerin başarılı bir şekilde sentezlendiği gösterilmiştir. SEM ve TEM analizleri ile nanokompozitlerin morfolojisi detaylı bir şekilde incelenmiştir. TiO 2 nanoparçacıklarından oluşan 100 nm civarında kümeler TEM görüntülerinde gözlenmiştir. ABSTRACTPolyvinyl borate (PVB)/titanium dioxide nanocomposites were synthesized through the crosslinking reaction of polyvinyl alcohol and boric acid in the presence of TiO 2 nanoparticles. Nanocomposites containing 0, 10, 20 and 30 wt.% TiO 2 nanoparticles were obtained and the photocatalytic activity of the prepared nanocomposites was studied by the degradation of methylene blue in aqueous solution under UVA light and natural sun light, seperately. The photocatalytic activity of PVB increased with TiO 2 contribution. The highest photocatalytic activity was obtained with the nanocomposite containing 30 wt.% TiO 2 . The chemical structure of the nanocomposite was investigated by FTIR analysis. FTIR analysis reveals that PVB and TiO 2containing PVB nanocomposites were successfully synthesized. Morphology of the nanocomposites was studied in detail by SEM and TEM analyses. TiO 2 aggregates of about 100 nm were observed on TEM images.

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“…The significance of immobilization of the TiO 2 photocatalyst in polymer matrix for the solid-phase photocatalytic degradation of plastics is highlighted by the recent studies. In literature, the photocatalytic degradation of polystyrene [6,7], polyaniline [8], polyvinyl chloride [9,10], low-density polyethylene [2], polyvinyl alcohol [3], and poly (methyl methacrylate) [11] was investigated in the presence of TiO 2 nanoparticles. The solid-phase photocatalytic degradation rate of plastics including TiO 2 nanoparticles was much faster than the simple photolysis of pure plastics.…”

Section: Introductionmentioning

confidence: 99%

Solid-Phase Photocatalytic Degradation of Polyvinyl Borate

Köysüren

2018

Catalysts

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In this study, polymer composites based on polyvinyl borate (PVB) with titanium dioxide (TiO2) nanoparticles were prepared through the condensation reaction of polyvinyl alcohol and boric acid in the presence of TiO2 nanoparticles. The solid-phase photocatalytic degradation of the polymer composites under UV light irradiation was investigated and compared with that of the pure PVB with the aid of weight loss measurements. The introduction of the photocatalyst nanoparticles in PVB enhanced the solid-phase photocatalytic degradation of the polymer matrix under UV light irradiation. The structural and morphological properties of PVB/TiO2 composites were analyzed by transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and UV-Vis spectroscopy, respectively. FTIR analysis revealed that PVB synthesis was successfully carried out in the presence of the photocatalyst nanoparticles. According to the morphological analyses, TiO2 nanoparticles were well dispersed in the PVB matrix.

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Photocatalytic activities of poly(methyl methacrylate)/titanium dioxide nanofiber mat

Cited by 19 publications

References 40 publications

Solution mixing preparation of PVDF/ZnO polymeric composite films engineered for heterogeneous photocatalysis

Solution mixing preparation of PVDF/ZnO polymeric composite films engineered for heterogeneous photocatalysis

Polivinil borat/TiO2 Nanokompozitlerin Fotokataliz Uygulaması

Solid-Phase Photocatalytic Degradation of Polyvinyl Borate

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