Electrospun TiO<sub>2</sub>/ZnO/PAN hybrid nanofiber membranes with efficient photocatalytic activity

Yar, Adem; Haspulat, Bircan; Üstün, Tugay; Eskizeybek, Volkan; Avcı, Ahmet; Kamış, Handan; Achour, S.

doi:10.1039/c7ra03699j

Cited by 94 publications

(67 citation statements)

References 45 publications

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“…The strong anatase peaks of ZnO appeared at 2θ angles of 31°, 34°, and 36° corresponding to the (100), (002), and (101) crystallographic planes, respectively. Moreover, the diffractions of the (102), (110), (103), and (201) planes were observed at 2θ angles of 48°, 57°, 63°, and 67°, respectively …”

Section: Resultsmentioning

confidence: 89%

“…The incorporation of ZnO nanoparticles slightly increased the surface roughness (see Figure ) and the diameter of the composite PAN/ZnO nanofibers to 240 ± 45 nm. This change was related to the presence of ZnO and the increase in the solution viscosity as reported in prior studies . Furthermore, the fiber diameter distribution of the PAN/ZnO composite nanofiber mats was less homogenous compared to that of pristine PAN with few bead defects.…”

Section: Resultsmentioning

confidence: 99%

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Enhancement of heavy metal ion adsorption using electrospun polyacrylonitrile nanofibers loaded with ZnO nanoparticles

Haddad

Alharbi

2018

J of Applied Polymer Sci

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This article describes the adsorption and tensile behavior of electrospun polyacrylonitrile (PAN) nanofiber mats loaded with different amounts of ZnO [0.5, 1.0, 2.0, and 5.0 wt%] nanoparticles. X‐ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transforminfrared (FTIR) spectroscopy, and thermal gravimetric analysis (TGA) were utilized to characterize the resulting composite nanofibers. Microscopic investigations revealed that the increase in surface roughness and diameter of the electrospun PAN nanofibers was due to the addition of ZnO nanoparticles. Adsorption results indicated that the fabricated PAN/ZnO (2.0 wt%) composite nanofiber mats showed the best adsorption performance with 261% and 167% increase in adsorption capacities for Pb(II) and Cd(II) from aqueous solutions, respectively, compared to pristine PAN nanofibers. The adsorption equilibrium was reached within 60 min, and the process could be described using the nonlinear pseudo‐second‐order kinetic model. The adsorption isotherm study was better represented by the Langmuir model, which suggested a homogeneous distribution of the monolayer adsorptive sites on the surface of the composite nanofibers. Mechanical testing revealed that the decrease in tensile strength and elongation at breakof the PAN/ZnO composite nanofiber mats was due to the formation of some bead defects and agglomerates within the structure of the PAN nanofibers. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47209.

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Section: Resultsmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Enhancement of heavy metal ion adsorption using electrospun polyacrylonitrile nanofibers loaded with ZnO nanoparticles

Haddad

Alharbi

2018

J of Applied Polymer Sci

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“…A characteristic peak of PVDF occurs at 1475.9 cm −1 , indicating the ‐CH 2 ‐wagging vibration . For the FT‐IR spectra of PAN‐T membranes, the typical absorption band at 2250 cm −1 is in accordance with the ‐CN group stretching vibration whereas the absorption bands at 2947 cm −1 and 1460 cm −1 are attributed to the asymmetrical and symmetrical bending of C‐H, respectively . The bonds at 458 cm −1 in the FTIR spectrum demonstrates the Ti‐O stretching of TiO 2.…”

Section: Resultsmentioning

confidence: 83%

“…After the solution is centrifuged, the concentration of the rhodamine B dye is evaluated using the UV‐vis spectroscopy method. The degradation efficiency of dye in different catalysts under irradiation in the given times is calculated with the following equation …”

Section: Methodsmentioning

confidence: 99%

“…Polyacrylonitrile (PAN) is a polymer that is also commonly used in electrospinning due to its hydrophilicity, flexibility, and density, and PAN is used as a fixing photocatalytic model polymer with an attempt to separate oil from water and purify water . In addition, the combination of PAN and TiO 2 or other photocatalytic materials can be synthesized to make nanofibrous membranes with photocatalysis . PAN electrostatic spraying can produce lotus leaves‐like membranes with oil‐water separation …”

Section: Introductionmentioning

confidence: 99%

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Core‐sheath structured TiO₂@PVDF/PAN electrospun membranes for photocatalysis and oil‐water separation

et al. 2019

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This study uses PVDF, PAN, and coaxial electrospinning technique to build a core‐sheath structure for TiO2@PVDF/PAN electrospun membranes. The resulting electrospun membranes are compared with traditional electrospun membranes in terms of photocatalysis and oil‐water separation, which examines the influences of electrospinning fibrous structure. The test results show that the core‐sheath structure provides TiO2@PVDF/PAN electrospun membranes with a large diameter, high strength, a rough surface, a high photocatalysis, and good oil‐water separation. With PVDF as the sheath and PAN as the core, TiO2@PVDF/PAN electrospun membranes have a maximum strength of 8.96 MPa and exhibit 97% of rhodamine B pollutant after the exposure to the UV light. Moreover, the oil‐water separation rate is 99% and an oil flux is 40 163.79 L·m2·h−1, and the membrane maintains a high flux after 10 cycles, which makes TiO2@PVDF/PAN electrospun membranes an important candidate for treating wastewater produced in industry and daily life.

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Multifunctional Trimetallic Colloidal Plasmonic Nanohybrid: Highly Efficient Photocatalyst and Photothermal Agent

Kumar

Awasthi

Park

et al. 2018

Adv Materials Inter

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Herein, preparation of novel multimetallic core–satellite Pt‐nanodots decorated TiO2‐coated AuNPs (AuNPs@TiO2@Pt) plasmonic nanoparticles with well‐defined spherical dendritic morphology and excellent colloidal stability are reported. The coating of a TiO2 layer and PtNDs maximizes the surface plasmon resonance as there is a redshift from 525 to 550 nm and also increases surface area significantly. Prepared plasmonic nanohybrid is tested for multiple photosystems such as water pollutants (methylene blue, methyl orange, and methyl red) photodegradation at room temperature in visible light irradiation, and photothermal studies in near‐infrared (NIR, 808 nm) light. AuNPs@TiO2@Pt shows complete photocatalytic degradation of organic dyes (methylene blue = 40 min, methyl orange = 75 min, and methyl red = 60 min) at room temperature and the pseudo first‐order rate constant is found to be 0.1242, 0.047, and 0.068 min−1 for methylene blue, methyl orange, and methyl red degradation, respectively. Moreover, AuNPs@TiO2@Pt also shows a high photothermal effect in NIR light irradiation with an excellent morphological and photostability.

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Electrospun TiO₂/ZnO/PAN hybrid nanofiber membranes with efficient photocatalytic activity

Abstract: Electrospun polyacrylonitrile (PAN) nanofibers were decorated with TiO2, ZnO and TiO2/ZnO nanoparticles for the first time to prepare flexible multifunctional nanofibrous membranes.

Cited by 94 publications

References 45 publications

Enhancement of heavy metal ion adsorption using electrospun polyacrylonitrile nanofibers loaded with ZnO nanoparticles

Enhancement of heavy metal ion adsorption using electrospun polyacrylonitrile nanofibers loaded with ZnO nanoparticles

Core‐sheath structured TiO₂@PVDF/PAN electrospun membranes for photocatalysis and oil‐water separation

Multifunctional Trimetallic Colloidal Plasmonic Nanohybrid: Highly Efficient Photocatalyst and Photothermal Agent

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Electrospun TiO2/ZnO/PAN hybrid nanofiber membranes with efficient photocatalytic activity

Abstract: Electrospun polyacrylonitrile (PAN) nanofibers were decorated with TiO2, ZnO and TiO2/ZnO nanoparticles for the first time to prepare flexible multifunctional nanofibrous membranes.

Cited by 94 publications

References 45 publications

Enhancement of heavy metal ion adsorption using electrospun polyacrylonitrile nanofibers loaded with ZnO nanoparticles

Enhancement of heavy metal ion adsorption using electrospun polyacrylonitrile nanofibers loaded with ZnO nanoparticles

Core‐sheath structured TiO2@PVDF/PAN electrospun membranes for photocatalysis and oil‐water separation

Multifunctional Trimetallic Colloidal Plasmonic Nanohybrid: Highly Efficient Photocatalyst and Photothermal Agent

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Product

Resources

About

Electrospun TiO₂/ZnO/PAN hybrid nanofiber membranes with efficient photocatalytic activity

Core‐sheath structured TiO₂@PVDF/PAN electrospun membranes for photocatalysis and oil‐water separation