TY - GEN
T1 - Simultaneous Cr(VI) reduction and naphthalene oxidation in aqueous solutions by UV/TiO2
AU - Gutierrez, Ricardo
AU - Flores, Sergio O.
AU - Rios, Omar
AU - Valenzuela, Mìguel
PY - 2008
Y1 - 2008
N2 - The photocatalytic reduction of Cr (VI) and oxidation of naphthalene using UV light and TiO2 were investigated with variations in the pH and Cr (VI)/naphthalene ratio. The photochemical reduction of Cr (VI) single system was not observed, whereas the photochemical oxidation of naphthalene was significantly high. However, the reduction reaction rates of Cr (VI) and oxidation of naphthalene were improved in the system UV/TiO2. The removal of Cr (VI) decreased dramatically with increasing pH, in contrast, the naphthalene removal was not influenced by the pH. The presence of naphthalene functioned as a hole scavenger enhancing the photocatalytic reduction of Cr (VI) by the photogenerated electrons, while the removal of naphthalene was decreasing at increasing Cr (VI) content.
AB - The photocatalytic reduction of Cr (VI) and oxidation of naphthalene using UV light and TiO2 were investigated with variations in the pH and Cr (VI)/naphthalene ratio. The photochemical reduction of Cr (VI) single system was not observed, whereas the photochemical oxidation of naphthalene was significantly high. However, the reduction reaction rates of Cr (VI) and oxidation of naphthalene were improved in the system UV/TiO2. The removal of Cr (VI) decreased dramatically with increasing pH, in contrast, the naphthalene removal was not influenced by the pH. The presence of naphthalene functioned as a hole scavenger enhancing the photocatalytic reduction of Cr (VI) by the photogenerated electrons, while the removal of naphthalene was decreasing at increasing Cr (VI) content.
UR - http://www.scopus.com/inward/record.url?scp=70350328748&partnerID=8YFLogxK
M3 - Contribución a la conferencia
AN - SCOPUS:70350328748
SN - 9781605608419
T3 - Materials Research Society Symposium Proceedings
SP - 1
EP - 5
BT - Materials Science of Water Purification - 2007
T2 - 2007 MRS Fall Meeting
Y2 - 26 November 2007 through 30 November 2007
ER -