Nanocoating on cotton fabric with nitrogen-doped graphene quantum dots/titanium dioxide/PVA: an erythemal UV protection and photoluminescent finishing

Felipe, Brenno Henrique Silva; Cabral, R. L. B.; Ladchumananandasivam, Rasiah; Zille, Andrea; Kim, Su Yeon; Fechine, Pierre Basílio Almeida; Nascimento, José Heriberto Oliveira do

doi:10.1016/j.jmrt.2022.03.078

Cited by 14 publications

(3 citation statements)

References 66 publications

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“…31 The functional groups present in linen fabric were studied by fourier-transform infrared spectroscopy (FTIR) using a VERTEX 70 v FT-IR spectrometer (BRUKER, Billerica, MA, USA) with a resolution of 4 cm −1 and a spectral range of 4000–400 cm −1 . 32 X-ray diffractometer (Shimadzu XRD-6000) was used to determine the crystallinity of the linen samples. The XRD patterns are obtained in the range of 2θ from 4° to 90° at room temperature.…”

Section: Methodsmentioning

confidence: 99%

A sustainable approach for linen dyeing and finishing with natural lac dye through chitosan bio-mordanting and microwave heating

Sayed

El-Bendary

Ahmed

2023

Journal of Engineered Fibers and Fabrics

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Sustainability has become a global requirement in all industries. In the textile sector sustainability can be achieved by developing innovative techniques, approaches, and machinery. The current study introduces a sustainable approach for linen dyeing with natural lac dye using microwave heating after the treatment with chitosan as a cationic bio-mordant. The chitosan treatment was carried out by a pad/dry-cure process with citric or acetic acid. Linen samples were characterized by scanning electron microscopy (SEM), and fourier transform infrared spectroscopy (FTIR). The results confirmed the deposition of chitosan on linen fabric with both citric and acetic acid. X-ray diffraction (XRD) was used to determine the change in the crystallinity of linen fabric after chitosan treatment and lac dyeing. The color strength results confirmed the successful application of chitosan as a bio-mordant and the efficiency of microwave heating in shortage the dyeing period in lac dyeing, where the K/S increased from 1.54 to reach 18.86 and 13 with acetic and citric acid, respectively in 7 min. Furthermore, the maximum color strength was achieved at pH 3 of lac dye and the presence of chitosan eliminated the usage of salt in the lac dyeing of linen fabrics. Fastness properties of the lac dyed linen fabrics to wash, light, and perspiration have been discussed. The functional properties (antibacterial activity and UV protection) of linen fabrics were assessed. The antibacterial activity was decreased after the chitosan-treated linen samples were dyed with lac dye. However, the UPF of linen samples was enhanced after lac dyeing.

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Section: Methodsmentioning

confidence: 99%

A sustainable approach for linen dyeing and finishing with natural lac dye through chitosan bio-mordanting and microwave heating

Sayed

El-Bendary

Ahmed

2023

Journal of Engineered Fibers and Fabrics

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“…c) Comparison of various properties of different nanofibrous membranes. [56][57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72] fluorescent particles (CFP, Figure S1, Supporting Information) has a remarkable shielding effect on UV light, but it has large particle size and insolubility in various polar solvents, such as acetone, chloroform, and tetrahydrofuran, which greatly limits its practical application. [16,18,19] Therefore, we proposed and designed by incorporating some inorganic nanoparticles (e.g., ZnO, Bi 2 O 3 ) to plug the protection gap caused by the CFP to build a protective composite with a dense and porous structure.…”

Section: Introductionmentioning

confidence: 99%

“…b) The PAN/CFP/ZnO-Bi 2 O 3nanofibrous membrane had the following excellent properties: UV-shielding and X-ray shielding, antibacterial activity, photocatalytic activity, bio-friendly, breathable and comfortable. c) Comparison of various properties of different nanofibrous membranes [56][57][58][59][60][61][62][63][64][65][66][67][68][69][70][71][72].…”

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confidence: 99%

Electrospun Multifunctional Radiation Shielding Nanofibrous Membrane for Daily Human Protection

Chen

Wang

Liao

et al. 2023

Adv Materials Technologies

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With the widespread utilization of many radiation instruments, people are inadvertently suffering from radiation damage. But nowadays, there is still a lack of a lightweight, comfortable, and efficient wearable radiation‐proof multifunctional composite fibrous membranes in people's lives. To solve this problem, a green and efficient radiation‐resistant nanofibrous membrane consisting of cellulose fluorescent particles (CFP), ZnO‐Bi2O3 nanoparticles, and polyacrylonitrile (PAN) solution is prepared by an electrospinning technology. The microscopic characterization shows that the nanoparticles are uniformly dispersed on the surface of the nanofibrous membrane, forming a dense fibrous structure. The PAN/CFP/ZnO‐Bi2O3 nanofibrous membrane exhibits not only an excellent ultraviolet(UV) interception with an ultraviolet protection factor value of 337.99 ± 83.67, but also a strong shielding effect on low‐energy X‐rays. Simultaneously, it can not only photocatalytically degrade 88.17% of methylene blue solution within 150 min, but also remove 94.16 ± 0.96% of Escherichia coli and 99.07 ± 0.59% of Staphylococcus aureus within 3 h under dark incubation and kill all bacteria within 3 h under light. The adhesion, growth, and proliferation of bone marrow mesenchymal stem cells on the PAN/CFP/ZnO‐Bi2O3 nanofibrous membranes confirm its low cytotoxicity and good biosafety. Thus, it could be expected to be used in daily life products such as UV and X‐rays radiation protective clothing.

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Distinguishable Recycling and Photodegradation Processes of Real Industrial Effluents and Blue Dianix Dye in the Presence of Different TQDs Size

Mohamed,

Saad,

Mohamed

et al. 2023

J Clust Sci

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Three titanium dioxide quantum dots (TQDs) samples were successfully synthesized at low calcination temperatures via a modified precipitation method at T1 = 330, T2 = 360, and T3 = 400 °C. The synthesized TQDs samples were characterized by: XRD, FE-SEM, HRTEM, and EDX to analyze the crystallinity, purity, and existence of asymmetric circle forms for the TQDs catalysts. Also, the surface area, band gap energy, and crystallite size at different calcination temperatures are 322.32 m2/g, 3.20 eV, and 4.9 nm at 300 °C, 292.39 m2/g, 3.14 eV, and 5.4 nm at 360 °C, and 254.66 m2/g, 3.07 eV, and 6.2 nm at 400 °C, respectively. A xenon photoreactor (70 W/cm2) was used to evaluate the photodegradation process of Blue Dianix dye and sunlight for real industrial effluent treatment. The photocatalytic activity decreases as the crystallite size increases in the TQD samples. Photocatalytic activity of TQDs due to their distinguishable crystalline domain size of less than 10 nm and their high surface area. The photodegradation rate of real industrial effluents was evaluated according to the COD limits permitted by Egyptian environmental law. Also, TOC and COD analyses evaluated 12 recycled samples of TQDs.

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Nanocoating on cotton fabric with nitrogen-doped graphene quantum dots/titanium dioxide/PVA: an erythemal UV protection and photoluminescent finishing

Cited by 14 publications

References 66 publications

A sustainable approach for linen dyeing and finishing with natural lac dye through chitosan bio-mordanting and microwave heating

A sustainable approach for linen dyeing and finishing with natural lac dye through chitosan bio-mordanting and microwave heating

Electrospun Multifunctional Radiation Shielding Nanofibrous Membrane for Daily Human Protection

Distinguishable Recycling and Photodegradation Processes of Real Industrial Effluents and Blue Dianix Dye in the Presence of Different TQDs Size

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