| Titre : | Enhanced visible - light photoelectrocatalytic degradation of organic contaminants at iodine - doped titanium dioxide film electrode (2012) |
| Auteurs : | Dongting Wang, Auteur ; Xin Li, Auteur ; Jianfeng Chen, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 51 N° 1, Janvier 2012) |
| Article en page(s) : | pp. 218-224 |
| Note générale : | Chimie industrielle |
| Langues : | Anglais |
| Tags : | 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 |
