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The fabrication of ZnO microrods on monolayer graphene and their photocatalytic application

Jincheng Fan, Tengfei Li, Hang Heng, Berislav Markovic, Igor Djerdj

Abstract


Zinc oxide (ZnO) microrods were fabricated on graphene/SiO2/Si substrate by a simple hydrothermal route. The obtained products were characterized using X-ray powder diffraction, scanning electron microscopy, energy dispersive X-ray spectrometry, photoluminescence and UV–visible spectrometry. Microrods exhibits hexagonal wurzite structure. Some ZnO clusters and twinned ZnO structures were found spread on the microrod array layer. The formation mechanism of ZnO microrods is discussed, emphasizing the formation mechanism of isolated clusters and twinned ZnO structures. Furthermore, microrods demonstrated a good photocatalytic performance towards rhodamine B degradation as ascribed to oxygen vacancies and interstitials considered as the photocatalytical active sites.


Keywords


ZnO microrods;Monolayer graphene;Photocatalytic application

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DOI: http://dx.doi.org/10.17344/acsi.2015.1670

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Copyright (c) 2015 Jincheng Fan, Tengfei Li, Hang Heng, Berislav Markovic, Igor Djerdj

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