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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.

Author information

1
Department of Materials and Mechanical Engineering, Universitat Politècnica de València, 46022 Valencia, Spain.
2
Department of Materials, Escuela Politécnica Nacional, Quito 170571, Ecuador.
3
Center for Surface Science and Nanotechnology, Polytechnic University of Bucharest, 060042 Bucharest, Romania.
4
Institute of Materials Technology, Universitat Politècnica de València, 46022 Valencia, Spain.
5
Gemmate Technologies, 10043 Torino, Italy.
6
Centro Richerche Fiat, 10043 Torino, Italy.

Abstract

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.

KEYWORDS:

ZnO; electrodeposition; graphene oxide; structure-directing agent

PMID:
31941002
DOI:
10.3390/ma13020365
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