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Facile preparation of nanocryptomelane and its application in the treatment of aqueous solutions containing basic fuchsin / Wei Xu in Industrial & engineering chemistry research, Vol. 51 N° 50 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 50 (Décembre 2012) . - pp. 16188-16195 Titre : Facile preparation of nanocryptomelane and its application in the treatment of aqueous solutions containing basic fuchsin Type de document : texte imprimé Auteurs : Wei Xu, Auteur ; Zifeng Deng, Auteur ; Guangming Li, Auteur Année de publication : 2013 Article en page(s) : pp. 16188-16195 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Aqueous  solution  Preparation Résumé : Cryptomelane nanomaterials were synthesized by a facile redox―reflux method. The physicochemical properties of these composites were studied in detail using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, laser Raman spectroscopy, thennogravimetric analysis (TGA), and N, adsorption-desorption techniques. The catalytic activities of nanocryptomelane were evaluated through treatment of aqueous solutions that contained basic fuchsin. In the case of basic fuchsin, the catalytic activity of synthetic nanocryptomelane was much higher than that of natural cryptomelane. Moreover, synthetic nanocryptomelane shows high stability and recyclability, has a high specific surface area, and is rich in mesopores. It could be anticipated that the specific surface area of the material had an obvious effect on the degradation of basic fuchsin. Kinetic studies indicated that the reaction follows the Langmuir―Hinshelwood model. The catalytic activities were found to be primarily correlated with the specific surface area. Overall, cryptomelane nanomaterials have great potential in the treatment of dye-containing wastewater. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26732145 [article] Facile preparation of nanocryptomelane and its application in the treatment of aqueous solutions containing basic fuchsin [texte imprimé] / Wei Xu, Auteur ; Zifeng Deng, Auteur ; Guangming Li, Auteur . - 2013 . - pp. 16188-16195. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 50 (Décembre 2012) . - pp. 16188-16195 Mots-clés : Aqueous  solution  Preparation Résumé : Cryptomelane nanomaterials were synthesized by a facile redox―reflux method. The physicochemical properties of these composites were studied in detail using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, laser Raman spectroscopy, thennogravimetric analysis (TGA), and N, adsorption-desorption techniques. The catalytic activities of nanocryptomelane were evaluated through treatment of aqueous solutions that contained basic fuchsin. In the case of basic fuchsin, the catalytic activity of synthetic nanocryptomelane was much higher than that of natural cryptomelane. Moreover, synthetic nanocryptomelane shows high stability and recyclability, has a high specific surface area, and is rich in mesopores. It could be anticipated that the specific surface area of the material had an obvious effect on the degradation of basic fuchsin. Kinetic studies indicated that the reaction follows the Langmuir―Hinshelwood model. The catalytic activities were found to be primarily correlated with the specific surface area. Overall, cryptomelane nanomaterials have great potential in the treatment of dye-containing wastewater. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26732145