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

Research output: Contribution to journalArticle

55 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 languageEnglish
Pages (from-to)106-111
Number of pages6
JournalMaterials Chemistry and Physics
Volume119
Issue number1-2
DOIs
Publication statusPublished - 2010 Jan 15
Externally publishedYes

Fingerprint

rhodamine B
Photocatalysts
Carbon
Irradiation
rhodamine
irradiation
composite materials
carbon
Composite materials
degradation
Degradation
polarization (charge separation)
High resolution transmission electron microscopy
Impregnation
Field emission
Light absorption
Electron microscopy
field emission
electron microscopy
optical absorption

Keywords

  • BiVO
  • Carbon
  • Charge separation
  • Composites
  • Photocatalysts
  • Surface area

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Effects of carbon content on the photocatalytic activity of C/BiVO4 composites under visible light irradiation. / Lee, Duk Kyu; Cho, In Sun; Lee, Sangwook; Bae, Shin Tae; Noh, Jun Hong; Kim, Dong-Wan; Hong, Kug Sun.

In: Materials Chemistry and Physics, Vol. 119, No. 1-2, 15.01.2010, p. 106-111.

Research output: Contribution to journalArticle

Lee, Duk Kyu ; Cho, In Sun ; Lee, Sangwook ; Bae, Shin Tae ; Noh, Jun Hong ; Kim, Dong-Wan ; Hong, Kug Sun. / Effects of carbon content on the photocatalytic activity of C/BiVO4 composites under visible light irradiation. In: Materials Chemistry and Physics. 2010 ; Vol. 119, No. 1-2. pp. 106-111.
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