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Materials (Basel). 2020 Jan 13;13(2). pii: E365. doi: 10.3390/ma13020365.

Graphene Oxide-Assisted Morphology and Structure of Electrodeposited ZnO Nanostructures.

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Department of Materials and Mechanical Engineering, Universitat Politècnica de València, 46022 Valencia, Spain.
Department of Materials, Escuela Politécnica Nacional, Quito 170571, Ecuador.
Center for Surface Science and Nanotechnology, Polytechnic University of Bucharest, 060042 Bucharest, Romania.
Institute of Materials Technology, Universitat Politècnica de València, 46022 Valencia, Spain.
Gemmate Technologies, 10043 Torino, Italy.
Centro Richerche Fiat, 10043 Torino, Italy.


In this paper, ZnO electrodeposition was studied with the presence of graphene oxide (GO) exploited as a possible structure-directing agent. The effect of deposition potential and duration on the morphology and structure of ZnO was analyzed. The morphology and structure of the hybrids was analyzed by Raman spectroscopy, X-ray diffraction (XRD), and Scanning Electron Microscopy (SEM). The Raman results indicate a successful modification of ZnO with GO sheets and a hybridization threshold of 10 mg L-1 by the evolution of the defect related band of ZnO at 580 cm-1. The morphology results show that a low GO content only slightly influences the morphology and orientation of ZnO nanostructures while a high content as 10 mg L-1 changes the morphology in nanoplates and growth orientation to lateral. The results show that while GO participated in the deposition reaction, it has a two-fold role, also by structure-controlling ZnO, indicating that the approach is valid for the use of GO as a structure-directing agent for the fabrication of ZnO nanostructures by electrodeposition with varying morphologies and orientations.


ZnO; electrodeposition; graphene oxide; structure-directing agent

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