Photocatalytic properties of PVDF membranes modified with g-C3N4 in the process of Rhodamines decomposition

Kolesnyk, Iryna; Kujawa, Joanna; Bubela, Halyna; Konovalova, V. V.; Бурбан, Анатолій; Cyganiuk, Aleksandra; Kujawski, Wojciech

doi:10.1016/j.seppur.2020.117231

Cited by 65 publications

(21 citation statements)

References 41 publications

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“…A comparison with literature data is limited to rare examples, which e.g. show that a CN material, immobilized on a PVDF membrane, enabled RhB degradation of 80% within 24 h [54]. Bi 2 O 3 fibers obtained after calcination at 500 °C were shown to degrade ca.…”

Section: Photocatalytic Degradation Of Organic Pollutantsmentioning

confidence: 99%

Photocatalytic water purification under visible light using carbon nitride materials and β-Bi2O3 immobilized on electrospun polyvinyl acetate fibers

Köwitsch¹,

Schäfer²,

Hornig³

et al. 2022

SN Appl. Sci.

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We report on the immobilization of carbon nitride (CN) materials and β-Bi2O3 on electrospun polyvinyl acetate (PVAc) fiber substrates using a dispersion based dip coating process. The spinning process was optimized by variation of several parameters to finally obtain continuous droplet-free fibers at 15 kV and a flow rate of 50 µL min−1 using a needle with 1.2 mm diameter. The polymer substrates were coated with the β-Bi2O3 and CN materials, which were characterized using SEM and applied in the photocatalytic degradation of organic pollutants such as Rhodamine B (RhB), ethinyl estradiol (EE2) and triclosan using visible light irradiation. The pollutants were degraded with up to 50% of the initial concentration within 8 h. Different amounts of CN material were deposited to evaluate the photocatalytic activity per mass. Immobilized CN materials were shown to be of higher activity (2.0 × 10−10 mol mg−1 min−1) than β-Bi2O3 (1.3 × 10−10 mol mg−1 min−1) and the mixture CN/β-Bi2O3 (1.6 × 10−10 mol mg−1 min−1). Reference samples with CN particles partially embedded in the polymer fleece showed minor degradaton rates (18% RhB degradation within 8 h) as compared to coated fiber substrates (47% RhB degradation within 8 h). Minor leaching of the carbon nitride material and no leaching of β-Bi2O3 occurs as shown by NPOC (non purgeable organic carbon) and ICP-MS measurements.

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Section: Photocatalytic Degradation Of Organic Pollutantsmentioning

confidence: 99%

Photocatalytic water purification under visible light using carbon nitride materials and β-Bi2O3 immobilized on electrospun polyvinyl acetate fibers

Köwitsch¹,

Schäfer²,

Hornig³

et al. 2022

SN Appl. Sci.

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“…Also, the percentage of rejection of DB14 with PVDF / g-C3N4 membrane remained almost constant)69.98%( because the increase of g-C3N4 on PVDF had no significantly effect on the enhancement of PVDF hydrophilicity property. It can be explained by adsorption phenomenon [22].…”

Section: Antifouling Property Of Membranesmentioning

confidence: 99%

“…g-C3N4 is a one of the carbon nitride compounds in which carbon and nitrogen atoms are joined together by n-conjugated bonds and form tri-s-triazine structural units [21]. Up to now, there have been several reports on the synthesis and application of the PVDF/g-C3N4 membrane and results revealed that dispersion of g-C3N4 in PVDF leads to enhanced of strength and thermal stability of the membrane (due to physical and chemical interactions between PVDF and functional groups at the surface of g-C3N4) [22][23]. But did not affect hydrophilic or antifouling properties of PVDF.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of PVDF/g-C3N4/chitosan Nanocomposite Membrane for the Removal of Direct Blue 14 Dye

Hasanzade

Gharbani

Derakhshan

et al. 2021

Preprint

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Polyvinylidene fluoride (PVDF)/g-C3N4/Chitosan thin film membranes were prepared for removal of Direct Blue 14 dye (an anionic dye) from aqueous solutions. PVDF/g-C3N4/Chitosan membranes were prepared by immersing of PVDF/g-C3N4 membrane in solution containing various concentrations of chitosan. The resulting membranes were characterized by XRD, FESEM, TEM and AFM. Also, pure water flux, salt rejection, water content, antifouling properties of prepared membranes were investigated. The resulting demonstrate that pure water flux was decreased by increasing of chitosan concentration, while water content, antifouling properties and salt rejection were increased. It is found that chitosan has major impact on the membrane structural properties due to transform of the PVDF membrane into hydrophilic ones. It is reported that maximum 93% rejection of Direct Blue 14 was obtained by PVDF/g-C3N4/Chitosan membrane. Compared to the PVDF/g-C3N4 membrane, the experimental results showed that PVDF/g-C3N4/Chitosan membranes demonstrated high potential mainly due to greater hydrophilicity and further minimizing membrane fouling.

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“…However, the wide band gap (3.2 eV) property of TiO 2 made it only reactive to ultraviolet light, limiting its application. Some recent studies have reported the outperformance of MOFs (Metal-Organic Frameworks) materials in adsorption and photocatalysis (Liu et al 2014;Kolesnyk et al 2020;Zhang et al 2020). Among many MOFs, UiO-66 is a newly developed photocatalyst material that can be used for the catalytic degradation of organic pollutants under ultraviolet and visible light.…”

Section: Introductionmentioning

confidence: 99%

“…Tran et al (Tran & Chun-Cehieh 2020) designed a PVDF-g-PAA-TGO membrane by grafting TiO 2 -GO onto PVDF membrane and discovered that the membrane exhibited high photocatalytic activity, mainly because of the decreased recombination rate of electron-hole pairs under UV illumination. Kolesnyk et al (2020) synthesized C 3 N 4 -modified membranes and revealed their anti-fouling property to various types of foulants. Being inspired by those findings, we proposed a complementary strategy-combining MOFs with TiO 2 could facilitate photo-generated electron transfer, enhance the photocatalytic activity and ultimately promote catalytic degradation of organics (Ma et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Designing of a novel polyvinylidene fluoride/TiO2/UiO-66-NH2 membrane with photocatalytic antifouling properties using modified zirconium-based metal-organic framework

Chen

Liu

et al. 2021

Water Science and Technology

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Novel polyvinylidene fluoride/TiO2/UiO-66-NH2 (PVDF/TiUN) membranes were produced by the delay phase separation method via introducing the TiO2/UiO-66-NH2 (TiUN) nanocomposite into PVDF casting solution. Interconnection of TiO2 and UiO-66-NH2 improved photocatalysis capacity and endowed PVDF/TiUN membranes with self-cleaning capability. Quantitative measurements showed that, firstly, PVDF/TiUN membranes exhibited improved photodegradation kinetics and efficiency (up to 88.1%) to Rhodamine B (RhB). Secondly, the performances of bovine serum albumin (BSA) rejection and permeation of PVDF/TiUN membranes outperformed those of other check samples, indicating enhanced hydrophilicity. Thirdly, rejection rate of BSA reached to breathtaking 98.14% and flux recovery ratio (FRR) of BSA reached breathtaking 95.37%. Thus, given their excellent anti-contamination property and separation performance, the PVDF/TiUN membrane is very likely to be a novel water treatment membrane.

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Photocatalytic properties of PVDF membranes modified with g-C3N4 in the process of Rhodamines decomposition

Cited by 65 publications

References 41 publications

Photocatalytic water purification under visible light using carbon nitride materials and β-Bi2O3 immobilized on electrospun polyvinyl acetate fibers

Photocatalytic water purification under visible light using carbon nitride materials and β-Bi2O3 immobilized on electrospun polyvinyl acetate fibers

Preparation and Characterization of PVDF/g-C3N4/chitosan Nanocomposite Membrane for the Removal of Direct Blue 14 Dye

Designing of a novel polyvinylidene fluoride/TiO2/UiO-66-NH2 membrane with photocatalytic antifouling properties using modified zirconium-based metal-organic framework

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