Abstract
Water-dispersible and anticorrosion nanocomposites have attracted extensive attention. In this study, tea polyphenol (TP)/graphene (GE) was fabricated with a one-step route. The preparation and modification of graphene nanosheets was carried out by graphene employing tea polyphenols as reduction and functionalization reagents. Our study adopted a nontoxic reductant without an extra functionalization reagent. This method is convenient, inexpensive, and environmentally friendly. The final functionalized graphene nanosheets had a single-layer structure. For evaluating performance, Raman spectroscopy was adapted for evaluating π–π interactions between TP and graphene. Elemental and structural composition was analyzed using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Sample morphology was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Results indicated that the TP could effectively augment the dispersive performance of graphene in the solution. The durable anticorrosion capacity of the epoxy matrix noticeably increased after adding the appropriate amount of tea polyphenols–graphene (TPG) (0.3 wt.%). Electrochemical impedance spectroscopy (EIS) studies showed that the impedance of artificial defects was enhanced. The anticorrosion property was attributed to the uniform dispersion of graphene by adding TP.
Highlights
Graphene is a novel material that has a single layer of carbon atoms
The anticorrosion performance of metallized materials could be significantly increased with the reduction of defects and layers of graphene, which is supported by several reports [3,4]
In order to solve the problems mentioned above, we present a method for preparing graphene with improved durability and surface functionalization via a one-step process
Summary
Graphene is a novel material that has a single layer of carbon atoms. It has been used extensively in various technological applications [1] that employ a variety of complex methods to adjust to each circumstance. Prasai et al prepared a graphene layer on a Cu substrate via the chemical-vapor deposition method and observed that the corrosion medium was effectively impeded by the graphene coating [6]. In view of its antioxidant abilities, water solubility, structural characteristics, and other applications in the affordable synthesis of graphene nanosheets, tea polyphenols that are used for the functionalization of graphene nanosheets impart outstanding water dispersibility and excellent corrosion-medium resistance performance. Results indicated that graphene nanosheets that are synthesized via this method have satisfactory water-dispersibility properties by avoiding stacking, and excellent corrosion resistance in hostile environments. Coatings 2019, 9, x FOR PEER REVIEW graphene nanosheets that are synthesized via this method have satisfactory water-dispersibility properties by avoiding stacking, and excellent corrosion resistance in hostile environments
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
