Abstract
Amorphous TiO2, prepared at room temperature through a sol-gel method implementing hydrolysis of TiCl4, has been supported on graphite rods and then annealed at 673 K. In this way graphite was completely covered by a porous anatase TiO2 layer, with an external thickness of about 1 μm, with graphite pores completely filled by the semiconductor particles. The obtained electrode was structurally characterized by SEM microscopy coupled to EDAX mapping and by Raman spectroscopy. A Pyrex annular reactor was designed in order to test the prepared electrodes for the photoelectrocatalytic degradation of 4-nitrophenol, a target pollutant dissolved in aqueous conductive solution. The continuous reactor worked in total recirculation mode and the degradation runs were carried out by applying near UV-light, bias or both energy sources. The influence of flow rate, initial 4-nitrophenol concentration and applied potential on the degradation rate was studied.
Lingua originale | English |
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pagine (da-a) | 339-346 |
Numero di pagine | 8 |
Rivista | Chemical Engineering Journal |
Volume | 155 |
Stato di pubblicazione | Published - 2009 |
All Science Journal Classification (ASJC) codes
- ???subjectarea.asjc.1600.1600???
- ???subjectarea.asjc.2300.2304???
- ???subjectarea.asjc.1500.1500???
- ???subjectarea.asjc.2200.2209???