Simultaneous Cr(VI) reduction and naphthalene oxidation in aqueous solutions by UV/TiO2

Ricardo Gutierrez; Sergio O. Flores; Omar Rios; Mìguel Valenzuela

Simultaneous Cr(VI) reduction and naphthalene oxidation in aqueous solutions by UV/TiO2

Ricardo Gutierrez, Sergio O. Flores, Omar Rios, Mìguel Valenzuela

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

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.

Original language	English
Title of host publication	Materials Science of Water Purification - 2007
Pages	1-5
Number of pages	5
State	Published - 2008
Externally published	Yes
Event	2007 MRS Fall Meeting - Boston, MA, United States Duration: 26 Nov 2007 → 30 Nov 2007

Publication series

Name	Materials Research Society Symposium Proceedings
Volume	1045
ISSN (Print)	0272-9172

Conference

Conference	2007 MRS Fall Meeting
Country/Territory	United States
City	Boston, MA
Period	26/11/07 → 30/11/07

Cite this

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title = "Simultaneous Cr(VI) reduction and naphthalene oxidation in aqueous solutions by UV/TiO2",

abstract = "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.",

author = "Ricardo Gutierrez and Flores, {Sergio O.} and Omar Rios and M{\`i}guel Valenzuela",

year = "2008",

language = "Ingl{\'e}s",

isbn = "9781605608419",

series = "Materials Research Society Symposium Proceedings",

pages = "1--5",

booktitle = "Materials Science of Water Purification - 2007",

note = "2007 MRS Fall Meeting ; Conference date: 26-11-2007 Through 30-11-2007",

}

Simultaneous Cr(VI) reduction and naphthalene oxidation in aqueous solutions by UV/TiO2. / Gutierrez, Ricardo; Flores, Sergio O.; Rios, Omar et al.
Materials Science of Water Purification - 2007. 2008. p. 1-5 (Materials Research Society Symposium Proceedings; Vol. 1045).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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.

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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 -

Simultaneous Cr(VI) reduction and naphthalene oxidation in aqueous solutions by UV/TiO2

Abstract

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