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; Sam S. Yoon

doi:10.1016/j.ceramint.2013.09.060

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, Sam S. Yoon

School of Mechanical Engineering

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

61 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 language	English
Pages (from-to)	3647-3654
Number of pages	8
Journal	Ceramics International
Volume	40
Issue number	2
DOIs	https://doi.org/10.1016/j.ceramint.2013.09.060
Publication status	Published - 2014 Mar

Keywords

D. ZnO
Graphene-ZnO
Methylene Blue
Photocatalyst

ASJC Scopus subject areas

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

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10.1016/j.ceramint.2013.09.060

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@article{69d2a0aefd4649de9baab93bca6b8bca,

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

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.",

keywords = "D. ZnO, Graphene-ZnO, Methylene Blue, Photocatalyst",

author = "Joshi, {Bhavana N.} and Hyun Yoon and Na, {Seung Heon} and Choi, {Jae Young} and Yoon, {Sam S.}",

note = "Funding Information: This research was supported by the Converging Research Center Program through the Ministry of Education, Science and Technology ( 2013K000186 ) and B551179-08-03-00 . This work was also supported by the Center for Inorganic Photovoltaic Materials (No. 2012-0001169 ) grant funded by the Korea government (MSIP) .",

year = "2014",

month = mar,

doi = "10.1016/j.ceramint.2013.09.060",

language = "English",

volume = "40",

pages = "3647--3654",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Limited",

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TY - JOUR

T1 - Enhanced photocatalytic performance of graphene-ZnO nanoplatelet composite thin films prepared by electrostatic spray deposition

AU - Joshi, Bhavana N.

AU - Yoon, Hyun

AU - Na, Seung Heon

AU - Choi, Jae Young

AU - Yoon, Sam S.

N1 - Funding Information: This research was supported by the Converging Research Center Program through the Ministry of Education, Science and Technology ( 2013K000186 ) and B551179-08-03-00 . This work was also supported by the Center for Inorganic Photovoltaic Materials (No. 2012-0001169 ) grant funded by the Korea government (MSIP) .

PY - 2014/3

Y1 - 2014/3

N2 - 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.

AB - 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.

KW - D. ZnO

KW - Graphene-ZnO

KW - Methylene Blue

KW - Photocatalyst

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U2 - 10.1016/j.ceramint.2013.09.060

DO - 10.1016/j.ceramint.2013.09.060

M3 - Article

AN - SCOPUS:84889085214

SN - 0272-8842

VL - 40

SP - 3647

EP - 3654

JO - Ceramics International

JF - Ceramics International

IS - 2

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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