Facile synthesis, characterization and recyclable photocatalytic activity of Ag2WO4@g-C3N4

K. Vignesh, Misook Kang

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Silver tungstate (Ag2WO4) supported on graphite like carbon nitride (Ag2WO4@g-C3N4) was synthesized via sono-chemical impregnation method to improve the photo-stability. The photocatalytic performance was evaluated for the degradation of methylene blue (MB) dye under simulated solar light irradiation. The surface area, light absorption capacity and photocatalytic activity of Ag2WO4 were improved in the presence of g-C3N4 support. The photocatalyst of Ag2WO4@g-C3N4 (40%) exhibited the best performance (100%) for the degradation of MB within 120 min of irradiation time. The recycling experiments revealed that the photo-corrosion behavior of Ag2WO4 was strongly inhibited by g-C3N4. A possible mechanism was proposed to explain the electron-hole transfer process between Ag2WO4 and g-C3N4. The results of this research work testified that Ag2WO4@g-C3N4 could be used as a promising photocatalyst under solar light exposure.

Original languageEnglish
Pages (from-to)30-36
Number of pages7
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume199
DOIs
Publication statusPublished - 30 May 2015
Externally publishedYes

Fingerprint

Methylene Blue
methylene blue
Photocatalysts
Irradiation
degradation
Degradation
irradiation
tungstates
carbon nitrides
Graphite
Carbon nitride
synthesis
electromagnetic absorption
recycling
Silver
Catalyst supports
Impregnation
Light absorption
Recycling
corrosion

Keywords

  • Ag<inf>2</inf>WO<inf>4</inf>
  • g-C<inf>3</inf>N<inf>4</inf>
  • Methylene blue
  • Photocatalytic activity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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abstract = "Silver tungstate (Ag2WO4) supported on graphite like carbon nitride (Ag2WO4@g-C3N4) was synthesized via sono-chemical impregnation method to improve the photo-stability. The photocatalytic performance was evaluated for the degradation of methylene blue (MB) dye under simulated solar light irradiation. The surface area, light absorption capacity and photocatalytic activity of Ag2WO4 were improved in the presence of g-C3N4 support. The photocatalyst of Ag2WO4@g-C3N4 (40{\%}) exhibited the best performance (100{\%}) for the degradation of MB within 120 min of irradiation time. The recycling experiments revealed that the photo-corrosion behavior of Ag2WO4 was strongly inhibited by g-C3N4. A possible mechanism was proposed to explain the electron-hole transfer process between Ag2WO4 and g-C3N4. The results of this research work testified that Ag2WO4@g-C3N4 could be used as a promising photocatalyst under solar light exposure.",
keywords = "Ag<inf>2</inf>WO<inf>4</inf>, g-C<inf>3</inf>N<inf>4</inf>, Methylene blue, Photocatalytic activity",
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AU - Vignesh, K.

AU - Kang, Misook

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Y1 - 2015/5/30

N2 - Silver tungstate (Ag2WO4) supported on graphite like carbon nitride (Ag2WO4@g-C3N4) was synthesized via sono-chemical impregnation method to improve the photo-stability. The photocatalytic performance was evaluated for the degradation of methylene blue (MB) dye under simulated solar light irradiation. The surface area, light absorption capacity and photocatalytic activity of Ag2WO4 were improved in the presence of g-C3N4 support. The photocatalyst of Ag2WO4@g-C3N4 (40%) exhibited the best performance (100%) for the degradation of MB within 120 min of irradiation time. The recycling experiments revealed that the photo-corrosion behavior of Ag2WO4 was strongly inhibited by g-C3N4. A possible mechanism was proposed to explain the electron-hole transfer process between Ag2WO4 and g-C3N4. The results of this research work testified that Ag2WO4@g-C3N4 could be used as a promising photocatalyst under solar light exposure.

AB - Silver tungstate (Ag2WO4) supported on graphite like carbon nitride (Ag2WO4@g-C3N4) was synthesized via sono-chemical impregnation method to improve the photo-stability. The photocatalytic performance was evaluated for the degradation of methylene blue (MB) dye under simulated solar light irradiation. The surface area, light absorption capacity and photocatalytic activity of Ag2WO4 were improved in the presence of g-C3N4 support. The photocatalyst of Ag2WO4@g-C3N4 (40%) exhibited the best performance (100%) for the degradation of MB within 120 min of irradiation time. The recycling experiments revealed that the photo-corrosion behavior of Ag2WO4 was strongly inhibited by g-C3N4. A possible mechanism was proposed to explain the electron-hole transfer process between Ag2WO4 and g-C3N4. The results of this research work testified that Ag2WO4@g-C3N4 could be used as a promising photocatalyst under solar light exposure.

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