Enhanced photocatalytic activity of C, F-codoped TiO2 loaded with AgCl

Hongjian Yan; Saji Thomas Kochuveedu; Li Na Quan; Sang Soo Lee; Dong Ha Kim

doi:10.1016/j.jallcom.2013.01.155

Enhanced photocatalytic activity of C, F-codoped TiO₂ loaded with AgCl

Hongjian Yan, Saji Thomas Kochuveedu, Li Na Quan, Sang Soo Lee, Dong Ha Kim

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

53 Scopus citations

Abstract

A protocol is reported for the development of a unique type of a co-doped TiO₂ with two kinds of non-metal atoms, carbon (C) and fluorine (F), as a visible-light active photocatalyst system. C, F-codoped TiO₂ nanoobjects with anatase phase were synthesized by calcination of a mixture of TiOF₂ and sulfuric-acid-treated melamine. The C, F co-doping resulted in a red-shift of the absorption edge to 510 nm from the 390-nm value obtained for a control TiO₂ photocatalyst. The C, F-codoped TiO₂ shows photocatalytic activity under visible light irradiation. Furthermore, the loading of AgCl into the parent co-doped TiO₂ enhanced its activity for degradation of methylene blue dye by about 3.5 times in the first hour irradiation. A brief mechanism responsible for the enhancement is proposed in terms of the transfer of holes from C, F-codoped TiO₂ to the AgCl phase.

Original language	English
Pages (from-to)	20-26
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	560
DOIs	https://doi.org/10.1016/j.jallcom.2013.01.155
State	Published - 25 May 2013

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (2011-0029409; 2012-0009649). H. Yan was supported by the RP-Grant 2012 of Ewha Womans University.

Keywords

AgCl
C, F-doping
Co-doped TiO
Photocatalysis
Visible light activity

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10.1016/j.jallcom.2013.01.155

Cite this

@article{844f219480c946e997645e302dbdb7f6,

title = "Enhanced photocatalytic activity of C, F-codoped TiO2 loaded with AgCl",

abstract = "A protocol is reported for the development of a unique type of a co-doped TiO2 with two kinds of non-metal atoms, carbon (C) and fluorine (F), as a visible-light active photocatalyst system. C, F-codoped TiO2 nanoobjects with anatase phase were synthesized by calcination of a mixture of TiOF2 and sulfuric-acid-treated melamine. The C, F co-doping resulted in a red-shift of the absorption edge to 510 nm from the 390-nm value obtained for a control TiO2 photocatalyst. The C, F-codoped TiO2 shows photocatalytic activity under visible light irradiation. Furthermore, the loading of AgCl into the parent co-doped TiO2 enhanced its activity for degradation of methylene blue dye by about 3.5 times in the first hour irradiation. A brief mechanism responsible for the enhancement is proposed in terms of the transfer of holes from C, F-codoped TiO2 to the AgCl phase.",

keywords = "AgCl, C, F-doping, Co-doped TiO, Photocatalysis, Visible light activity",

author = "Hongjian Yan and Kochuveedu, {Saji Thomas} and Quan, {Li Na} and Lee, {Sang Soo} and Kim, {Dong Ha}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (2011-0029409; 2012-0009649). H. Yan was supported by the RP-Grant 2012 of Ewha Womans University. ",

year = "2013",

month = may,

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doi = "10.1016/j.jallcom.2013.01.155",

language = "English",

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T1 - Enhanced photocatalytic activity of C, F-codoped TiO2 loaded with AgCl

AU - Yan, Hongjian

AU - Kochuveedu, Saji Thomas

AU - Quan, Li Na

AU - Lee, Sang Soo

AU - Kim, Dong Ha

N1 - Funding Information: This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (2011-0029409; 2012-0009649). H. Yan was supported by the RP-Grant 2012 of Ewha Womans University.

PY - 2013/5/25

Y1 - 2013/5/25

N2 - A protocol is reported for the development of a unique type of a co-doped TiO2 with two kinds of non-metal atoms, carbon (C) and fluorine (F), as a visible-light active photocatalyst system. C, F-codoped TiO2 nanoobjects with anatase phase were synthesized by calcination of a mixture of TiOF2 and sulfuric-acid-treated melamine. The C, F co-doping resulted in a red-shift of the absorption edge to 510 nm from the 390-nm value obtained for a control TiO2 photocatalyst. The C, F-codoped TiO2 shows photocatalytic activity under visible light irradiation. Furthermore, the loading of AgCl into the parent co-doped TiO2 enhanced its activity for degradation of methylene blue dye by about 3.5 times in the first hour irradiation. A brief mechanism responsible for the enhancement is proposed in terms of the transfer of holes from C, F-codoped TiO2 to the AgCl phase.

AB - A protocol is reported for the development of a unique type of a co-doped TiO2 with two kinds of non-metal atoms, carbon (C) and fluorine (F), as a visible-light active photocatalyst system. C, F-codoped TiO2 nanoobjects with anatase phase were synthesized by calcination of a mixture of TiOF2 and sulfuric-acid-treated melamine. The C, F co-doping resulted in a red-shift of the absorption edge to 510 nm from the 390-nm value obtained for a control TiO2 photocatalyst. The C, F-codoped TiO2 shows photocatalytic activity under visible light irradiation. Furthermore, the loading of AgCl into the parent co-doped TiO2 enhanced its activity for degradation of methylene blue dye by about 3.5 times in the first hour irradiation. A brief mechanism responsible for the enhancement is proposed in terms of the transfer of holes from C, F-codoped TiO2 to the AgCl phase.

KW - AgCl

KW - C, F-doping

KW - Co-doped TiO

KW - Photocatalysis

KW - Visible light activity

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