Enhanced visible - light photoelectrocatalytic degradation of organic contaminants at iodine - doped titanium dioxide film electrode / Dongting Wang in Industrial & engineering chemistry research, Vol. 51 N° 1 (Janvier 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 1 (Janvier 2012) . - pp. 218-224 Titre : Enhanced visible - light photoelectrocatalytic degradation of organic contaminants at iodine - doped titanium dioxide film electrode Type de document : texte imprimé Auteurs : Dongting Wang, Auteur ; Xin Li, Auteur ; Jianfeng Chen, Auteur Année de publication : 2012 Article en page(s) : pp. 218-224 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Electrodes Pollution Photocatalysis Electrocatalysis Visible radiation Résumé : For the sake of effectively utilizing visible light of the solar spectrum in photoelectrocatalytic (PEC) degradation of organic contaminants, iodine-doped TiO2 nanocrystallites (I-TNCs) film electrodes with extended response to visible light and mesoporous nanocrystalline framework were fabricated and subsequently characterized by scanning electronic microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and diffuse reflectance spectrum (DRS). The PEC activity of the film electrodes was evaluated by the degradation of rhodamine B (RhB) and 1-naphthol (1-NP) in aqueous solution at ambient conditions under visible irradiation. Under an optimized I/Ti doping ratio of 2.5 mol %, the PEC performance of the film electrode based on I-TNCs is significantly better, with the RhB degradation efficiency of 92%, which was nearly 2-fold faster than that of the film electrode based on undoped TNCs. In comparison with photocatalytic (PC) process and electrochemical (EC) process, a significant synergetic effect was observed in the PEC degradation oforganic contaminants. The main degraded products of 1-NP were further analyzed by GC-MS and ca. 70% of TOC removal was obtained. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25476464 [article] Enhanced visible - light photoelectrocatalytic degradation of organic contaminants at iodine - doped titanium dioxide film electrode [texte imprimé] / Dongting Wang, Auteur ; Xin Li, Auteur ; Jianfeng Chen, Auteur . - 2012 . - pp. 218-224. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 1 (Janvier 2012) . - pp. 218-224 Mots-clés : Electrodes Pollution Photocatalysis Electrocatalysis Visible radiation Résumé : For the sake of effectively utilizing visible light of the solar spectrum in photoelectrocatalytic (PEC) degradation of organic contaminants, iodine-doped TiO2 nanocrystallites (I-TNCs) film electrodes with extended response to visible light and mesoporous nanocrystalline framework were fabricated and subsequently characterized by scanning electronic microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and diffuse reflectance spectrum (DRS). The PEC activity of the film electrodes was evaluated by the degradation of rhodamine B (RhB) and 1-naphthol (1-NP) in aqueous solution at ambient conditions under visible irradiation. Under an optimized I/Ti doping ratio of 2.5 mol %, the PEC performance of the film electrode based on I-TNCs is significantly better, with the RhB degradation efficiency of 92%, which was nearly 2-fold faster than that of the film electrode based on undoped TNCs. In comparison with photocatalytic (PC) process and electrochemical (EC) process, a significant synergetic effect was observed in the PEC degradation oforganic contaminants. The main degraded products of 1-NP were further analyzed by GC-MS and ca. 70% of TOC removal was obtained. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25476464

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