Graphite-Supported TiO2 for 4-Nitrophenol Degradation in a Photoelectrocatalytic Reactor

Vittorio Loddo, Giovanni Palmisano, Vincenzo Augugliaro, Sedat Yurdakal, Giovanni Palmisano, Rosaria Ciriminna, Mario Pagliaro, Hossam Hamed El Nazer

Risultato della ricerca: Articlepeer review

45 Citazioni (Scopus)

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 originaleEnglish
pagine (da-a)339-346
Numero di pagine8
RivistaChemical Engineering Journal
Volume155
Stato di pubblicazionePublished - 2009

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.2300.2304???
  • ???subjectarea.asjc.1500.1500???
  • ???subjectarea.asjc.2200.2209???

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