6533b821fe1ef96bd127ae37

RESEARCH PRODUCT

Degradation of 4-nitrophenol (4-NP) using Fe–TiO2 as a heterogeneous photo-Fenton catalyst

Jun LiGiuseppe MeleIolanda PioBinxia ZhaoLeonardo PalmisanoGiuseppe Vasapollo

subject

TitaniumPhotolysisEnvironmental EngineeringUltraviolet RaysIronHealth Toxicology and MutagenesisInorganic chemistry4-NitrophenolHydrogen PeroxidePollutionCatalysisHeterogeneous photocatalysis 4-Nitrophenol Fe–TiO2 photocatalystsCatalysisTitanium oxideNitrophenolschemistry.chemical_compoundchemistryTitanium dioxidePhotocatalysisEnvironmental ChemistryDegradation (geology)Hydrogen peroxideWaste Management and DisposalChemical decomposition

description

Photocatalytic degradation of 4-nitrophenol was investigated using Fe-doped (1, 3, 5 and 8 wt.% Fe) TiO(2) catalysts under UV light irradiation in aqueous dispersions in the presence of H(2)O(2). Photocatalysts with the lowest Fe content (1%) showed a considerably better behavior with respect to the unloaded TiO(2) and the catalysts with higher Fe contents. Photocatalytic degradation was studied under different conditions such as amounts of 1% Fe-TiO(2) catalyst, H(2)O(2) dose and initial pH of 4-NP solution. The results indicated that about 67.53% total organic carbon of a solution containing 20 mg L(-1) 4-NP was removed at pH 6.17 by using 4.9 mM of H(2)O(2) and 0.4 g L(-1) of the catalyst in a 2-L batch photo-reactor, the complete degradation of 4-NP occurring after 60 min. It was also observed that catalytic behavior could be reproduced in consecutive experiments without a considerable decrease of the UV/Fe-TiO(2)/H(2)O(2) process efficiency.

yearjournalcountryeditionlanguage
2010-04-15Journal of Hazardous Materials
https://doi.org/10.1016/j.jhazmat.2009.11.066