Facile fabrication of functional cellulose paper with high-capacity immobilization of Ag nanoparticles for catalytic applications for tannery wastewater / Ruiquan Yu in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 2 (Année 2020)  

[article]  inJOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 2 (Année 2020) . - 11 p. Titre : Facile fabrication of functional cellulose paper with high-capacity immobilization of Ag nanoparticles for catalytic applications for tannery wastewater Type de document : texte imprimé Auteurs : Ruiquan Yu, Auteur ; Tianxiang Lan, Auteur ; Jing Jiang, Auteur ; Hao Peng, Auteur ; Ruifeng Liang, Auteur ; Gongyan Liu, Auteur Année de publication : 2020 Article en page(s) : 11 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Argent Catalyseurs Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules. Eaux usées Nanoparticules Papier Tannage -- Déchets Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : It has been a research goal to develop macroscopic materials with an optimized surface structure to affix silver nanoparticles which could contaminate water and maximize their practical functions. Cellulose paper is a versatile biomass material valued for its abundance, low cost, biocompatibility, and natural composition. Until now, its potential application in water purification has not been adequately explored. In this study, gallic acid-modified silver nanoparticles (GA@AgNPs) were loaded onto commercial cellulose filter paper using a simple lipoic acid modification process (GA@AgNPs-LA-CP). Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD) were used to characterize the GA@AgNPs-LA-CP. The catalytic activity of the GA@AgNPs-LA-CP was evaluated by the reduction reaction of methylene blue (MB), Rhodamine B (RhB), and 4-nitrophenol (4-NP) with sodium borohydride (NaBH4). The GA@AgNPs-LA-CP exhibited excellent catalytic activity toward MB, RhB, and 4-NP, taking advantage of its high specific surface area generated by the cellulose fiber network structure. Interestingly, due to the electrostatic interactions between the cationic dyes and the GA@AgNPs, the as-prepared catalytic composite material serves as a better catalyst for MB and RhB, suggesting dual applications of the composite materials for organic wastewater treatment and the removal of harmful dyes. This implies that the immobilization of AgNPs on cellulose papers is an effective method and can be applied to efficient wastewater treatment applications. Note de contenu : - EXPERIMENTAL SECTION : Materials - Preparation of lipoic acid-modified cellulose paper (LA-CP) - Preparation of GA@AgNPs immobilized cellulose paper by lipoic acid modification (GA@AgNPs-LA-CP) - Characterizations - Measurement of Ag content on GA@AgNPs-LA-CP - Catalytic reduction of 4-NP, MB and RhB - RESULTS AND DISCUSSION : Preparation and characterization of GA@AgNPs-LA-CP - CATALYTIC PROPERTIES OF GA@AgNPs-LA-CP DOI : https://doi.org/10.1186/s42825-020-00019-y En ligne : https://link.springer.com/content/pdf/10.1186/s42825-020-00019-y.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37330 [article]

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