Effects of carbon content on the photocatalytic activity of C/BiVO4 composites under visible light irradiation

Duk Kyu Lee; In Sun Cho; Sangwook Lee; Shin Tae Bae; Jun Hong Noh; Dong Wan Kim; Kug Sun Hong

doi:10.1016/j.matchemphys.2009.08.028

Effects of carbon content on the photocatalytic activity of C/BiVO₄ composites under visible light irradiation

Duk Kyu Lee
, In Sun Cho
, Sangwook Lee
, Shin Tae Bae
, Jun Hong Noh
, Dong Wan Kim
, Kug Sun Hong^*

^*Corresponding author for this work

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

63 Citations (Scopus)

Abstract

Carbon-loaded BiVO₄ composite photocatalysts were prepared using an impregnation method, and their ability to photocatalytically degrade Rhodamine B dye solution under visible light irradiation was investigated. The prepared composite photocatalysts were characterized by X-ray diffraction (XRD), field-emission electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller (BET) surface area measurements, and UV-vis diffuse reflectance spectra. We found that the carbon was well-dispersed on the surface of BiVO₄. The photocatalytic activity of the composite photocatalysts for the degradation of Rhodamine B (RhB) in aqueous solution under visible light irradiation (>420 nm) was higher than that of pure BiVO₄. Moreover, the degradation efficiency increased as the carbon content increased up to 3 wt%. The mechanism of enhanced photocatalytic activity is discussed with reference to surface area, optical absorption properties, and charge separation.

Original language	English
Pages (from-to)	106-111
Number of pages	6
Journal	Materials Chemistry and Physics
Volume	119
Issue number	1-2
DOIs	https://doi.org/10.1016/j.matchemphys.2009.08.028
Publication status	Published - 2010 Jan 15
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korean government (MOST) (R01-2007-000-11075-0).

Keywords

BiVO
Carbon
Charge separation
Composites
Photocatalysts
Surface area

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

Access to Document

10.1016/j.matchemphys.2009.08.028

Cite this

@article{75c56a59ada44bfa9cd8d800bffa9a7a,

title = "Effects of carbon content on the photocatalytic activity of C/BiVO4 composites under visible light irradiation",

abstract = "Carbon-loaded BiVO4 composite photocatalysts were prepared using an impregnation method, and their ability to photocatalytically degrade Rhodamine B dye solution under visible light irradiation was investigated. The prepared composite photocatalysts were characterized by X-ray diffraction (XRD), field-emission electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller (BET) surface area measurements, and UV-vis diffuse reflectance spectra. We found that the carbon was well-dispersed on the surface of BiVO4. The photocatalytic activity of the composite photocatalysts for the degradation of Rhodamine B (RhB) in aqueous solution under visible light irradiation (>420 nm) was higher than that of pure BiVO4. Moreover, the degradation efficiency increased as the carbon content increased up to 3 wt\%. The mechanism of enhanced photocatalytic activity is discussed with reference to surface area, optical absorption properties, and charge separation.",

keywords = "BiVO, Carbon, Charge separation, Composites, Photocatalysts, Surface area",

author = "Lee, \{Duk Kyu\} and Cho, \{In Sun\} and Sangwook Lee and Bae, \{Shin Tae\} and Noh, \{Jun Hong\} and Kim, \{Dong Wan\} and Hong, \{Kug Sun\}",

note = "Funding Information: This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korean government (MOST) (R01-2007-000-11075-0).",

year = "2010",

month = jan,

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doi = "10.1016/j.matchemphys.2009.08.028",

language = "English",

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AU - Lee, Duk Kyu

AU - Cho, In Sun

AU - Lee, Sangwook

AU - Bae, Shin Tae

AU - Noh, Jun Hong

AU - Kim, Dong Wan

AU - Hong, Kug Sun

N1 - Funding Information: This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korean government (MOST) (R01-2007-000-11075-0).

PY - 2010/1/15

Y1 - 2010/1/15

N2 - Carbon-loaded BiVO4 composite photocatalysts were prepared using an impregnation method, and their ability to photocatalytically degrade Rhodamine B dye solution under visible light irradiation was investigated. The prepared composite photocatalysts were characterized by X-ray diffraction (XRD), field-emission electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller (BET) surface area measurements, and UV-vis diffuse reflectance spectra. We found that the carbon was well-dispersed on the surface of BiVO4. The photocatalytic activity of the composite photocatalysts for the degradation of Rhodamine B (RhB) in aqueous solution under visible light irradiation (>420 nm) was higher than that of pure BiVO4. Moreover, the degradation efficiency increased as the carbon content increased up to 3 wt%. The mechanism of enhanced photocatalytic activity is discussed with reference to surface area, optical absorption properties, and charge separation.

AB - Carbon-loaded BiVO4 composite photocatalysts were prepared using an impregnation method, and their ability to photocatalytically degrade Rhodamine B dye solution under visible light irradiation was investigated. The prepared composite photocatalysts were characterized by X-ray diffraction (XRD), field-emission electron microscopy (FESEM), high-resolution transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller (BET) surface area measurements, and UV-vis diffuse reflectance spectra. We found that the carbon was well-dispersed on the surface of BiVO4. The photocatalytic activity of the composite photocatalysts for the degradation of Rhodamine B (RhB) in aqueous solution under visible light irradiation (>420 nm) was higher than that of pure BiVO4. Moreover, the degradation efficiency increased as the carbon content increased up to 3 wt%. The mechanism of enhanced photocatalytic activity is discussed with reference to surface area, optical absorption properties, and charge separation.

KW - BiVO

KW - Carbon

KW - Charge separation

KW - Composites

KW - Photocatalysts

KW - Surface area

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M3 - Article

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