Novel heterogeneous photocatalysts prepared with waste wool and Fe3+ or Cu2+ ions for degradation of CI Reactive Red 195: a comparative study / Guixin Cui in COLORATION TECHNOLOGY, Vol. 133, N° 3 (06/2017)  

[article]  inCOLORATION TECHNOLOGY > Vol. 133, N° 3 (06/2017) . - p. 200-208 Titre : Novel heterogeneous photocatalysts prepared with waste wool and Fe3+ or Cu2+ ions for degradation of CI Reactive Red 195: a comparative study Type de document : texte imprimé Auteurs : Guixin Cui, Auteur ; Yongchun Dong, Auteur ; Yingchao Li, Auteur ; Weifeng Shen, Auteur ; Zhenlei Chen, Auteur Année de publication : 2017 Article en page(s) : p. 200-208 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Catalyseurs métalliques Colorants -- Détérioration Ions métalliques Laine Photocatalyse Recyclage (déchets, etc.) Textiles et tissus -- Recyclage Index. décimale : 667.3 Teinture et impression des tissus Résumé : In order to reuse waste wool, two transition metal ions, Fe3+ and Cu2+, were coordinated to with it to prepare a series of metal–wool complexes as new heterogeneous Fenton photocatalysts for the degradation of a typical azo dye, CI Reactive Red 195, in aqueous solution. The effect of the initial metal ion concentration and temperature on the reaction was investigated. Furthermore, the catalytic performance of the resulting metal–wool complexes was evaluated with respect to the dye decoloration efficiency at different pH levels under visible irradiation. The results demonstrated that increasing the initial metal ion concentration and temperature enhanced ion coordination to produce complexes of increased metal content. The obtained Fe–wool showed a higher metal content than the Cu–wool. The light adsorption performance in the UV and visible regions of Cu–Fe–wool is stronger than that of Fe–wool or Cu–wool. Furthermore, Cu–Fe–Wool was found to have a higher catalytic activity than the other two complexes under visible irradiation, especially in the alkaline pH range. Note de contenu : - METHODS : Materials and reagents - Coordination of wool fibre with metal ions - Morphology and structural characterisation - Catalytic evaluation - RESULTS AND DISCUSSION : Preparation of wool-metal complexes - Characterisation of metal-wool complexes - Catalytic study - Effect of the solution pH DOI : 10.1111/cote.12268 En ligne : https://drive.google.com/file/d/1qZcSDQCgILgJtgWDb-9fHxcMIzg8z-5O/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28644 [article]

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