Synthesis of ZnO decorated graphene nanocomposite for enhanced photocatalytic properties

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4874877· OSTI ID:22273464

Gayathri, S.; Jayabal, P. ^[1]; Kottaisamy, M. ^[2]

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1. Department of Laser Studies, School of Physics, Madurai Kamaraj University, Madurai 625021, Tamilnadu (India)
2. Department of Chemistry, Thiagarajar College of Engineering, Madurai 625014, Tamilnadu (India)

Zinc oxide/Graphene (GZ) composites with different concentrations of ZnO were successfully synthesized through simple chemical precipitation method. The X-ray diffraction pattern and the micro-Raman spectroscopic technique revealed the formation of GZ composite, and the energy dispersive X-ray spectrometry analysis showed the purity of the prepared samples. The ZnO nanoparticles decorated graphene sheets were clearly visible in the field emission scanning electron micrograph. Raman mapping was employed to analyze the homogeneity of the prepared samples. The diffuse-reflectance spectra clearly indicated that the formation of GZ composites promoted the absorption in the visible region also. The photocatalytic activity of ZnO and GZ composites was studied by the photodegradation of Methylene blue dye. The results revealed that the GZ composites exhibited a higher photocatalytic activity than pristine ZnO. Hence, we proposed a simple wet chemical method to synthesize GZ composite and its application on photocatalysis was demonstrated.

• OSTI ID: 22273464
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 17 Vol. 115; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
CONCENTRATION RATIO
ELECTRON SCANNING
FIELD EMISSION
GRAPHENE
METHYLENE BLUE
NANOSTRUCTURES
PARTICLES
PHOTOCATALYSIS
PRECIPITATION
SPECTRAL REFLECTANCE
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY
ZINC OXIDES