scholarly journals Microwave Synthesis of Zinc Oxide/Reduced Graphene Oxide Hybrid for Adsorption-Photocatalysis Application

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Fatin Saiha Omar ◽  
Huang Nay Ming ◽  
Syed Muhamad Hafiz ◽  
Lim Hong Ngee
Keyword(s):  
Zinc Oxide ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Average Length ◽  
Hexagonal Phase ◽  
Zno Nanorods ◽  
Transmission Electron ◽  
Reduced Graphene ◽  
Enhanced Adsorption ◽  
Xrd Patterns

This work reports on synthesis of zinc oxide/reduced graphene oxide (ZnO/rGO) nanocomposites in the presence of diethylenetriamine (DETA) via a facile microwave method. The X-ray diffraction (XRD) patterns of the nanocomposites correspond to the ZnO hexagonal phase wurtzite structure. The high-resolution transmission electron microscopy (HRTEM) images revealed that the ZnO nanorods, with an average length : diameter ratio of 10, were successfully deposited on the rGO sheets. Under the irradiation of sunlight, the nanocomposites showed enhanced adsorption-photocatalysis by more than twofold and photocurrent response by sixfold compared to the ZnO. The excellent photoactivity performance of the nanocomposites is contributed by smaller ZnO nanorod and the presence of rGO that acts as a photosensitizer by transferring electrons to the conduction band of ZnO within the nanocomposite during sunlight illumination.

Photocatalytic Activity of One-Pot Synthesized Reduced Graphene Oxide – Zinc Oxide Nanocomposites

2015 ◽  
Vol 37 ◽  
pp. 74-84 ◽  
Author(s):  
Kh. Mohammadi ◽  
S. Safa ◽  
S. Safalou Moghaddam ◽  
M. Rabbani ◽  
Rouhollah Azimirad
Keyword(s):  
Zinc Oxide ◽  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Zno Nanorods ◽  
Diffuse Reflection Spectroscopy ◽  
One Pot ◽  
Preferential Growth ◽  
Reduced Graphene ◽  
Electronic Microscope

In this research, reduced graphene oxide/zinc oxide nanocomposites (rGO/ZnO) were synthesized at different pHs (9, 10, 11 and 12) by using one-pot hydrothermal bath method., The obtained nanocomposites characterized by using X-ray diffractometer, Fourier transform infrared, Raman, scanning electronic microscope and diffuse reflection spectroscopy techniques. Photocatalytic activity of nanocomposites were evaluated by monitoring the photodegradation of 4-nitrophenol (4-NP) in water exposed to ultraviolet and visible light irradiation. The morphological and structural results have been shown that at pHs of 9 and 10, the ZnO nearly aggregated nanoparticle are crystalized, while at higher pHs (11 and 12), the preferential growth of ZnO in the form of nanorods is seen. Comparative studies on photocatalytic performance of the nanocomposites shows that ZnO nanorods have better photocatalytic activities than the others.

scholarly journals Surface plasmon enhanced photoluminescence of ZnO nanorods by capping reduced graphene oxide sheets

2014 ◽  
Vol 22 (10) ◽  
pp. 11436 ◽  
Author(s):  
Feng Han ◽  
Shuming Yang ◽  
Weixuan Jing ◽  
Kyle Jiang ◽  
Zhuangde Jiang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Surface Plasmon ◽  
Zno Nanorods ◽  
Enhanced Photoluminescence ◽  
Reduced Graphene ◽  
Graphene Oxide Sheets
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