Enhanced photocatalytic performance of graphene-ZnO nanoplatelet composite thin films prepared by electrostatic spray deposition

Bhavana N. Joshi, Hyun Yoon, Seung Heon Na, Jae Young Choi, Suk Goo Yoon

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Graphene-ZnO (G-ZnO) composite thin films were produced using the electrostatic spray deposition technique (ESD). The effects of the concentration of graphene and annealing temperature on the structural and photocatalytic properties of the G-ZnO films were studied by X-ray diffraction, scanning electron microscopy, atomic force microscopy, Raman spectroscopy, and UV-visible spectroscopy. We demonstrated that the G-ZnO films exhibit enhanced activities towards the photodegradation of methylene blue dye. A G-ZnO film with 0.1 wt% graphene that was annealed at 300 C showed the highest photo-degradation activity. We found that the incorporation of graphene reduced electron-hole recombination in the ZnO film.

Original languageEnglish
Pages (from-to)3647-3654
Number of pages8
JournalCeramics International
Volume40
Issue number2
DOIs
Publication statusPublished - 2014 Mar 1

Fingerprint

Graphite
Composite films
Graphene
Electrostatics
Thin films
Photodegradation
Methylene Blue
Raman spectroscopy
Atomic force microscopy
Coloring Agents
Dyes
Spectroscopy
Annealing
X ray diffraction
Scanning electron microscopy
Electrons

Keywords

  • D. ZnO
  • Graphene-ZnO
  • Methylene Blue
  • Photocatalyst

ASJC Scopus subject areas

  • Ceramics and Composites
  • Process Chemistry and Technology
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Enhanced photocatalytic performance of graphene-ZnO nanoplatelet composite thin films prepared by electrostatic spray deposition. / Joshi, Bhavana N.; Yoon, Hyun; Na, Seung Heon; Choi, Jae Young; Yoon, Suk Goo.

In: Ceramics International, Vol. 40, No. 2, 01.03.2014, p. 3647-3654.

Research output: Contribution to journalArticle

Joshi, Bhavana N. ; Yoon, Hyun ; Na, Seung Heon ; Choi, Jae Young ; Yoon, Suk Goo. / Enhanced photocatalytic performance of graphene-ZnO nanoplatelet composite thin films prepared by electrostatic spray deposition. In: Ceramics International. 2014 ; Vol. 40, No. 2. pp. 3647-3654.
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