Photodegradation mechanisms and kinetics of Eosin-Y in oxic and anoxic conditions

Álvarez‐Martín, Alba; Trashin, Stanislav; Cuykx, Matthias; Covaci, Adrian; Wael, Karolien De; Janssens, Koen

doi:10.1016/j.dyepig.2017.06.031

Cited by 75 publications

(91 citation statements)

References 35 publications

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“…45380 are compared favorably with those reported in the literature (19). Moreover, in accordance with previous studies (19,20), no peaks traceable to the light-induced decomposition of C.I. 45380 were observed under the HPLC conditions used, which indicated that the photoproducts absorbed at different wavelengths and exhibited different chromatographic retention as compared to the parent dye compound.…”

Section: Photodegradation Studiessupporting

confidence: 92%

Incorporation in Lipid Microparticles of Acid Red 87, a Colorant Used in Tattoo Inks: Effect on Photodegradation Under Simulated Sunlight and Laser Radiation

Scalia

Dozzo

Magli

et al. 2020

Photochem & Photobiology

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Tattoo colorants decompose under solar radiation and when exposed to laser light for their removal, leading to the accumulation in the dermis of toxic products. Aim of this study was to develop lipid microparticles (LMs) loaded with the colorant, Acid Red 87 (C.I. 45380) used in tattoo inks, and to investigate the effect of this system on the photostability of the colorant under simulated sunlight or laser irradiation. LMs loaded with C.I. 45380 were prepared by melt emulsification using tristearin and phosphatidylcholine as excipients. They were characterized by optical microscopy, laser diffraction, X‐ray diffraction and release studies. Free C.I. 45380 and the colorant‐loaded LMs were irradiated with a solar simulator or a Q‐switched laser. Irradiation with a solar simulator demonstrated that photodecomposition of C.I. 45380 was markedly reduced by incorporation of the dye in the LMs, from 20.5 ± 4.6% to 1.3 ± 1.8%. Conversely, the laser‐induced degradation of the colorant (30.1 ± 6.6%) was not significantly influenced by encapsulation in the LMs (the encapsulated C.I. 45380 loss was 27.4 ± 5.5%). Incorporation of C.I. 45380 in lipid microparticles enhances the photostability under sunlight of tattoo inks containing this colorant, without affecting its laser‐induced degradation and hence laser removal efficiency.

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Section: Photodegradation Studiessupporting

confidence: 92%

Incorporation in Lipid Microparticles of Acid Red 87, a Colorant Used in Tattoo Inks: Effect on Photodegradation Under Simulated Sunlight and Laser Radiation

Scalia

Dozzo

Magli

et al. 2020

Photochem & Photobiology

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“…Eosin was discovered in 1873 by Henry Caro by the bromination of fluorescein and it was commercialized as a textile dye in the same year (Geldof ). When precipitated with aluminum, lead or potassium salts, the soluble Eosin‐Y is converted to an insoluble form, named geranium lake, and is widely used as a red pigment in ancient Western artefacts (Alvarez‐Martin ).…”

Section: Resultsmentioning

confidence: 99%

Characterizations of palace lantern tassels preserved in The Palace Museum, Beijing, by UPLC‐ESI‐Q‐TOF

et al. 2020

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Palace lanterns were important and highly visible decorations in the imperial palace in Beijing, China, during the Qing dynasty (1636-1912. Most lanterns had colourful tassels made of fibres. The study performed a comprehensive investigation of the materials and dyes used for palace lantern tassels preserved in The Palace Museum, Beijing. Eight samples with different colours, including yellow, green and red, from five palace lanterns were analysed. By using ultra-performance liquid chromatography combined with time-of-flight mass spectrometry, the compositions of the dyes were identified quickly, and thus the dyes' origins were explored. A Xray fluorescence spectrometer assisted in the detection of whether a mordant was used during the dyeing process. As a result, the tassels were all made of silk, discovered through the use of microscopic observation and micro-Fourier transform infrared spectrometry analysis. Different dyeing techniques were found in these tassels: yellow tassels were dyed by cork tree or turmeric by a direct dyeing method; greens were dyed by pagoda bud with an iron mordant, or by the combination of cork tree and indigo using multi-dyeing method; and red tassels were coloured with different acid red industrial dyes. These results provide valuable data for the conservation of ancient textile tassels and contribute to the investigation of other hanging tags.

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“…ascribed to the initial red color of EY's chromophore. The shoulder peak at 485 nm shows the dimeric substance of EY and the less intense peak at 259 nm corresponds to the π → π * transitions in the aromatic rings [47]. As can be observed from UV bands during the dye degradation process, the UV absorption bands at λ = 516 nm and 485 nm in the visible region gradually decrease and become invisible after 20 min, indicating the chromophoric part of the molecules has been destructed.…”

Section: Electrocatalytic Performancementioning

confidence: 89%

“…Eosin Y (EY), also named as Acid Red 87, is a xanthene red dye that defined as a conjugated π system [47]. The EY dye is broadly used in dyeing, printing, leather, and fluorescent pigment, and painting industries because of its low prices and bright color.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Fe73.5Si13.5B9Cu1Nb3 metallic glass: Rapid activation of peroxymonosulfate towards ultrafast Eosin Y degradation

et al. 2018

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L. (2018). Fe73.5Si13.5B9Cu1Nb3 metallic glass: Rapid activation of peroxymonosulfate towards ultrafast Eosin Y degradation. AbstractDiscovering functional applications of metallic glasses (MGs) as heterogeneous catalysts is a fundamental and essential topic. This work reports the rapid production of sulfate radicals (SO 4 • − ) from peroxymonosulfate (PMS) using Fe 73.5 Si 13.5 B 9 Cu 1 Nb 3 glassy ribbons as catalysts for Eosin Y (EY) dye wastewater treatment. The reaction rates (k) from the experimental data reveal that the EY degradation is well fitted with the pseudo-first-order kinetic model. The strong electron transfer ability is characterized by electrochemical methods, presenting an advanced catalytic performance for EY degradation. Various experimental parameters, including dye concentration, catalyst dosage, PMS concentration, light intensity, pH and reaction temperature as well as the saline and natural inorganic effects, are fully investigated. The results show that the color removal of EY dye could achieve nearly 100% within 20 min. The quenching experiments are performed to verify the production of reactive species, suggesting that both •OH and SO 4 • − are produced from PMS that play significant roles for EY degradation. This critical study reveals that using Fe 73.5 Si 13.5 B 9 Cu 1 Nb 3 MGs as catalysts exhibit a superior reactivity on PMS activation in wastewater treatment. The discoveries shed lights into the study of electron transfer ability for MGs, presenting extensive prospects in the application of dye wastewater treatment.

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Photodegradation mechanisms and kinetics of Eosin-Y in oxic and anoxic conditions

Cited by 75 publications

References 35 publications

Incorporation in Lipid Microparticles of Acid Red 87, a Colorant Used in Tattoo Inks: Effect on Photodegradation Under Simulated Sunlight and Laser Radiation

Incorporation in Lipid Microparticles of Acid Red 87, a Colorant Used in Tattoo Inks: Effect on Photodegradation Under Simulated Sunlight and Laser Radiation

Characterizations of palace lantern tassels preserved in The Palace Museum, Beijing, by UPLC‐ESI‐Q‐TOF

Fe73.5Si13.5B9Cu1Nb3 metallic glass: Rapid activation of peroxymonosulfate towards ultrafast Eosin Y degradation

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