Layer Control of Tubular Graphene for Corrosion Inhibition of Nickel Wires
Journal
ACS Applied Materials and Interfaces
Journal Volume
9
Journal Issue
27
Pages
22911-22917
Date Issued
2017
Author(s)
Abstract
Corrosion protection of complex surface is an active area of research due to its importance to commercial applications such as electrochemical fabrication. However, conventional coatings exhibit limited conductivity, thermal stability, and durability and are thus not suitable. Recent work has shown the potential of graphene, a two-dimensional carbon allotrope, for corrosion protection. The studies, however, limited themselves to simple planar geometries that provide limited insight in the applicability to relevant morphologies such as mesh electrodes and roughened surfaces. We here study the corrosion protection ability of tubular graphene (TG) on Ni-wires as a model system for such complex geometries. TG-covered Ni wires of approximately 50 μm diameters were produced by the annealing of cellulose acetate (CA) on Ni. The high quality of the TG coating was confirmed by Raman spectroscopy, scanning electron microscopy, and electrical measurements. We show that the graphene layer number could be controlled by adjusting the CA membrane quantity. We found a direct relation between the degree of corrosion inhibition with the variation of graphene layer number. The increase of graphene layers on a Ni surface could enhance its corrosion inhibition in acidic, basic, and marine environments, which shows the potential of our approach for future applications. © 2017 American Chemical Society.
Subjects
anticorrosion; graphene layer; graphene tube; nickel wire; thermal annealing
SDGs
Other Subjects
Coatings; Corrosion inhibitors; Graphene; Interfaces (materials); Marine applications; Nickel; Scanning electron microscopy; Seawater corrosion; Wire; Anti-corrosion; Commercial applications; Conventional coatings; Electrical measurement; Electrochemical fabrication; Graphene layers; Nickel wires; Thermal-annealing; Corrosion protection; Annealing; Coatings; Corrosion Prevention; Electrochemistry; Nickel Compounds; Wire
Type
journal article