Surface-deposited nanofibrous TiO2 for photocatalytic degradation of organic pollutants

Sidaraviciute, Ruta; Krugly, Edvinas; Dabasinskaite, Lauryna; Valatka, Eugenijus; Martuzevičius, Dainius

doi:10.1007/s10971-017-4505-x

Cited by 8 publications

(3 citation statements)

References 56 publications

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“…Titanium dioxide is widely used as photocatalysis material besides ZnO, SnO2, Fe2O5. Photocatalysis is a process to facilitate of chemical reaction under light radiation and with the presence of a catalyst [4]. Some researchers used TiO2 fiber composites deposited using the electrospinning method of several polymeric materials such as polyacrylonitrile (PAN) [4], polysiloxane [5].…”

Section: Introductionmentioning

confidence: 99%

“…Photocatalysis is a process to facilitate of chemical reaction under light radiation and with the presence of a catalyst [4]. Some researchers used TiO2 fiber composites deposited using the electrospinning method of several polymeric materials such as polyacrylonitrile (PAN) [4], polysiloxane [5]. In this study, the fiber composites were fabricated by using polymer poly (vinyl alcohol) (PVA), ethyl cellulose and nanomaterial TiO2 as a photocatalyst material.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Characterization of Electrospun Composite Fiber of Polymer-TiO<sub>2</sub>

Yudoyono

Sudarsono

Anggoro

2019

MSF

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Nanocrystal TiO2 has been synthesized from TiCl3 as a precursor using the co-precipitation method. Synthesis parameters are chosen to produce the anatase phase of TiO2 nanomaterials. Polymer-TiO2 composite was made from a mixture of TiO2 nanomaterials and poly(vinyl alcohol) (PVA) and ethyl cellulose polymer materials. PVA solvents were used by water (H2O) while for ethyl cellulose used terpineol solvents. Composite fiber was made using electrospinning method with sedimentation parameters: between the syringe and Al foil collector applied the voltage at 10 kV, between the needle tip and the collector, the distance was 10 cm, the syringe pump was set at a constant flow rate of 1 ml/h, the collector rotation speed was 100 rpm , and humidity inside electrospinning machine was 40%. Samples were characterized using scanning electron microscopy (SEM) and x-ray diffraction (XRD). XRD results showed TiO2 crystal diffraction peaks when the composition of TiO2 was quite large, whereas for only a small TiO2 composition, the diffraction peaks did not appear and were only dominated by amorphous PVA. Deposition results showed that composite fibers have been formed for PVA polymers whereas fiber ethyl cellulose was not formed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Electrospun Composite Fiber of Polymer-TiO<sub>2</sub>

Yudoyono

Sudarsono

Anggoro

2019

MSF

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“…In the late '70s, photocatalysis took a turn when researchers discovered the TiO 2 ability to degrade stable organic compounds as they were studying the water photoelectrolysis [1][2][3]. Since then, there has been a great interest to improve the degradation efficiency of organic pollutants using TiO 2 [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

C-, N-, S-, and F-Doped Anatase TiO₂ (101) with Oxygen Vacancies: Photocatalysts Active in the Visible Region

González-Torres

Poulain

Domínguez-Soria

et al. 2018

International Journal of Photoenergy

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Anatase TiO2 presents a large bandgap of 3.2 eV, which inhibits the use of visible light radiation (λ > 387 nm) for generating charge carriers. We studied the activation of TiO2 (101) anatase with visible light by doping with C, N, S, and F atoms. For this purpose, density functional theory and the Hubbard U approach are used. We identify two ways for activating the TiO2 with visible light. The first mechanism is broadening the valence or conduction band; for example, in the S-doped TiO2 (101) system, the valence band is broadened. A similar process can occur in the conduction band when the undercoordinated Ti atoms are exposed on the TiO2 (101) surface. The second mechanism, and more efficient for activating the anatase, is to generate localized states in the gap: N-doping creates localized empty states in the bandgap. For C-doping, the surface TiO2 (101) presents a “cleaner” gap than the bulk TiO2, resulting in fewer recombination centers. The dopant valence electrons determine the number and position of the localized states in the bandgap. The formation of charge carriers with visible light is highly favored by the oxygen vacancies on TiO2 (101). The catalytic activity of C-doping using visible radiation can be explained by its high absorption intensity generated by oxygen vacancies on the surface. The intensity of the visible absorption spectrum of doped TiO2 (101) follows the order: C > N > F > S dopant.

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Robust fabrication of superhydrophobic and photocatalytic self-cleaning cotton textile based on TiO2 and fluoroalkylsilane

et al. 2018

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Surface-deposited nanofibrous TiO2 for photocatalytic degradation of organic pollutants

Cited by 8 publications

References 56 publications

Preparation and Characterization of Electrospun Composite Fiber of Polymer-TiO<sub>2</sub>

Preparation and Characterization of Electrospun Composite Fiber of Polymer-TiO<sub>2</sub>

C-, N-, S-, and F-Doped Anatase TiO₂ (101) with Oxygen Vacancies: Photocatalysts Active in the Visible Region

Robust fabrication of superhydrophobic and photocatalytic self-cleaning cotton textile based on TiO2 and fluoroalkylsilane

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Surface-deposited nanofibrous TiO2 for photocatalytic degradation of organic pollutants

Cited by 8 publications

References 56 publications

Preparation and Characterization of Electrospun Composite Fiber of Polymer-TiO<sub>2</sub>

Preparation and Characterization of Electrospun Composite Fiber of Polymer-TiO<sub>2</sub>

C-, N-, S-, and F-Doped Anatase TiO2 (101) with Oxygen Vacancies: Photocatalysts Active in the Visible Region

Robust fabrication of superhydrophobic and photocatalytic self-cleaning cotton textile based on TiO2 and fluoroalkylsilane

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Product

Resources

About

C-, N-, S-, and F-Doped Anatase TiO₂ (101) with Oxygen Vacancies: Photocatalysts Active in the Visible Region