Photocatalytic degradation of a mixture of two anionic dyes: Procion Red MX-5B and Remazol Black 5 (RB5)

Sahel, K.; Perol, N.; Dappozze, F.; Bouhent, M.; Derriche, Z.; Guillard, C.

doi:10.1016/j.jphotochem.2010.03.019

Cited by 53 publications

(26 citation statements)

References 29 publications

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“…Degrading a mixture of dye from solution can become a complicated process as it can lead to wide variety of new compounds which are not present in the degradation of a single dye. The significance and complexity of the problem have drawn the attention of various researchers [13][14][15][16]. In this study, (UV/H 2 O 2 ) processes was applied to study the degradation of a mixture of a binary dye solution consisting of Thiazole Yellow G (TYG) and Malachite Green (MG) which belongs to the azo and triaryl methane family, respectively.…”

Section: Introductionmentioning

confidence: 99%

Comparative degradation studies of Malachite Green and Thiazole Yellow G and their binary mixture using UV/H2O2

Rauf

Ali

Sadig

et al. 2016

Desalination and Water Treatment

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A B S T R A C TWastewater effluents of many industries are usually composed of dye mixtures and their removal poses a significant challenge. The present study reports on the use of an advanced oxidation process namely UV/H 2 O 2 to degrade Malachite Green (MG) (k = 0.0518 min −1 ) and Thiazole Yellow G (TYG) (k = 0.0367 min −1 ), and their binary mixture in aqueous solutions. Interestingly, it was seen that the photolytic degradation of dyes in binary solution was slower (by 10% for MG and by 46% for TYG) than that in neat solutions under comparable conditions. The total organic carbon analysis (TOC) was also carried out in both the neat dyes (38.5% decrease for MG and 13% decrease for TYG), and in mixture the TOC change was 40%. HPLC analyses confirmed the formation of intermediates in both individual dye solutions, which were however not seen in binary mixtures. The present work shows that dye mixtures behave very differently than neat dyes, and highlights the importance of studying complex dye mixtures and the possible deleterious interactions between dye intermediates during the remediation process.

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Section: Introductionmentioning

confidence: 99%

Comparative degradation studies of Malachite Green and Thiazole Yellow G and their binary mixture using UV/H2O2

Rauf

Ali

Sadig

et al. 2016

Desalination and Water Treatment

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“…On the other hand, advanced oxidation processes (AOPs) are proven to be capable of destroying various types of recalcitrant water pollutants. Among AOPs, UV-based processes are shown to be effective in decolorization of textile dye effluents [3][4][5][6][7][8][9][10]. Although relatively ineffective in mineralization of organic loading of dye effluents, direct UV-photolysis might be considered as a treatment method aimed to remove coloration without addition of auxiliary chemicals (i.e.…”

Section: Introductionmentioning

confidence: 99%

Environmental aspects on the photodegradation of reactive triazine dyes in aqueous media

Kušić

Koprivanac

Božić

2013

Journal of Photochemistry and Photobiology A: Chemistry

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“…In the current work, the pH value of the initial solution of the binary dye mixture was, 7.02 while the pH pzc of the TiO 2 layer is 6.5 [60]. lamp (self-degradation of dyes), there was no obvious degradation and the degradation percentage was less than 5% for both dyes after 5 h. In addition, it was found that when using the UV lamp (photoinduction) without a photocatalyst, the decolourisation percentage reached 17% and 19% for MO and MB, respectively, which may result in a low degree of photodegradation percentage for both dyes.…”

Section: Photocatalytic Study Of the Core-shell Nanospheresmentioning

confidence: 83%

Photodegradation of Binary Azo Dyes Using Core-Shell Fe3O4/SiO2/TiO2 Nanospheres

Alzahrani¹

2017

AJAC

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Photodegradation has emerged as an environmentally friendly method of decomposing harmful dyes in wastewater. In this study, core-shell Fe 3 O 4 /SiO 2 / TiO 2 nanospheres with magnetic cores were obtained from synthesised magnetic Fe 3 O 4 nanoparticles through the precipitation method, the surface of the magnetic Fe 3 O 4 nanoparticles was coated with a silica (SiO 2 ) layer by hydrolysis of tetramethoxysilane (TMOS) as a silica source, and finally, Fe 3 O 4 /SiO 2 nanospheres were coated with titanium (TiO 2 ) layer using tetrabutyltitanate (TBT) as a precursor through the sol-gel process. The morphology and structure of the prepared materials were characterised by X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), X-ray energy dispersive spectrometry (EDAX), Fourier transform infrared spectroscopy (FT-IR), and atomic force microscopy (AFM). The photocatalytic activities of the prepared core-shell nanospheres were studied using binary azo dyes, namely methyl orange (anionic dye, MO) and methylene blue (cationic dye, MB) in aqueous solution under UV light irradiation (365 nm), and UV-Vis spectrophotometer was utilised to monitor the amount of each dye in the mixture. It was found that 90.2% and 100% of binary MO and MB were removed for 5 h, respectively. The results revealed that the efficiency of the photocatalytic degradation of the core-shell nanospheres was not degreased after five runs that can be used as recyclable photocatalysts. The results show that the performance of the prepared core-shell nanospheres was better than that of commercial TiO 2 nanoparticles. Moreover, the magnetic separation properties of the core-shell Fe 3 O 4 /SiO 2 /TiO 2 nanospheres can enable the prepared materials to have wider application prospects.

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Photocatalytic degradation of a mixture of two anionic dyes: Procion Red MX-5B and Remazol Black 5 (RB5)

Cited by 53 publications

References 29 publications

Comparative degradation studies of Malachite Green and Thiazole Yellow G and their binary mixture using UV/H2O2

Comparative degradation studies of Malachite Green and Thiazole Yellow G and their binary mixture using UV/H2O2

Environmental aspects on the photodegradation of reactive triazine dyes in aqueous media

Photodegradation of Binary Azo Dyes Using Core-Shell Fe<sub>3</sub>O<sub>4</sub>/SiO<sub>2</sub>/TiO<sub>2</sub> Nanospheres

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Photocatalytic degradation of a mixture of two anionic dyes: Procion Red MX-5B and Remazol Black 5 (RB5)

Cited by 53 publications

References 29 publications

Comparative degradation studies of Malachite Green and Thiazole Yellow G and their binary mixture using UV/H2O2

Comparative degradation studies of Malachite Green and Thiazole Yellow G and their binary mixture using UV/H2O2

Environmental aspects on the photodegradation of reactive triazine dyes in aqueous media

Photodegradation of Binary Azo Dyes Using Core-Shell Fe&lt;sub&gt;3&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt;/SiO&lt;sub&gt;2&lt;/sub&gt;/TiO&lt;sub&gt;2&lt;/sub&gt; Nanospheres

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Photodegradation of Binary Azo Dyes Using Core-Shell Fe<sub>3</sub>O<sub>4</sub>/SiO<sub>2</sub>/TiO<sub>2</sub> Nanospheres