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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]  in Industrial & 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

A simple method for preparing the highly dispersed supported Co3O4 on silica support / Jianfeng Chen in Industrial & engineering chemistry research, Vol. 50 N° 7 (Avril 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 7 (Avril 2011) . - pp. 4212-4215 [ Titre : A simple method for preparing the highly dispersed supported Co3O4 on silica support Type de document : texte imprimé Auteurs : Jianfeng Chen, Auteur ; Yurui Zhang, Auteur ; Li Tan, Auteur Année de publication : 2011 Article en page(s) : pp. 4212-4215 [ Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : silica  Metal  catalyst Résumé : A novel, simple, and general method for preparing a highly dispersed supported metal catalyst was developed by modification of a silica surface with ethylene glycol (EG) before the impregnation of cobalt precursors. The modified surface of the silica support significantly improved the dispersion of supported cobalt oxide and formed more Co3+ species on the surface of Co3O4 particles, resulting in very high catalytic activity in CO oxidation. The obtained catalysts were characterized by XRD, TEM, and XPS. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie1022749 [article] A simple method for preparing the highly dispersed supported Co3O4 on silica support [texte imprimé] / Jianfeng Chen, Auteur ; Yurui Zhang, Auteur ; Li Tan, Auteur . - 2011 . - pp. 4212-4215 [. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 7 (Avril 2011) . - pp. 4212-4215 [ Mots-clés : silica  Metal  catalyst Résumé : A novel, simple, and general method for preparing a highly dispersed supported metal catalyst was developed by modification of a silica surface with ethylene glycol (EG) before the impregnation of cobalt precursors. The modified surface of the silica support significantly improved the dispersion of supported cobalt oxide and formed more Co3+ species on the surface of Co3O4 particles, resulting in very high catalytic activity in CO oxidation. The obtained catalysts were characterized by XRD, TEM, and XPS. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie1022749