Graphene Oxide/Polyaniline Nanocomposites Used in Anticorrosive Coatings for Environmental Protection
In recent years, metal corrosion causes serious threats to the economy of the world and the living environment. Hence, it is very important to seek non-toxic and environmentally friendly materials with metal anti-corrosion properties for the sustainable development of society. The barrier properties...
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doaj-061f4a038de94070aad8bd315d0511272020-12-13T00:02:23ZengMDPI AGCoatings2079-64122020-12-01101215121510.3390/coatings10121215Graphene Oxide/Polyaniline Nanocomposites Used in Anticorrosive Coatings for Environmental ProtectionShuanqiang Yang0Shu Zhu1Ruoyu Hong2College of Chemical Engineering, Fuzhou University, Fuzhou 350108, ChinaCollege of Chemical Engineering, Fuzhou University, Fuzhou 350108, ChinaCollege of Chemical Engineering, Fuzhou University, Fuzhou 350108, ChinaIn recent years, metal corrosion causes serious threats to the economy of the world and the living environment. Hence, it is very important to seek non-toxic and environmentally friendly materials with metal anti-corrosion properties for the sustainable development of society. The barrier properties of graphene oxide (GO) and the special electrochemical property of polyaniline (PANI) can significantly improve the corrosion resistance of metals. Herein, we developed an in-situ polymerization method to prepare graphene oxide/polyaniline (GO/PANI) nanocomposites with unique anti-corrosion properties. The obtained GO/PANI nanocomposites were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermalgravimetric analysis, UV–vis spectroscopy and scanning electron microscopy. The as-prepared composite materials were uniformly dispersed in epoxy resin to prepare anticorrosive coatings and coated on the surface of steel. The anti-corrosion performance of the coatings was measured by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization technique. The EIS results showed that the total impedance of epoxy/GO/PANI coatings is greater than epoxy/PANII coatings, and the impedance module value can reach 8.67 × 10<sup>8</sup> Ω·cm<sup>2</sup>. In general, it is concluded that the anti-corrosion performance of GO/PANI coating is significantly higher than PANI coating and pure GO coating.https://www.mdpi.com/2079-6412/10/12/1215polyanilinegraphene oxideepoxy resincorrosion |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Shuanqiang Yang Shu Zhu Ruoyu Hong |
spellingShingle |
Shuanqiang Yang Shu Zhu Ruoyu Hong Graphene Oxide/Polyaniline Nanocomposites Used in Anticorrosive Coatings for Environmental Protection Coatings polyaniline graphene oxide epoxy resin corrosion |
author_facet |
Shuanqiang Yang Shu Zhu Ruoyu Hong |
author_sort |
Shuanqiang Yang |
title |
Graphene Oxide/Polyaniline Nanocomposites Used in Anticorrosive Coatings for Environmental Protection |
title_short |
Graphene Oxide/Polyaniline Nanocomposites Used in Anticorrosive Coatings for Environmental Protection |
title_full |
Graphene Oxide/Polyaniline Nanocomposites Used in Anticorrosive Coatings for Environmental Protection |
title_fullStr |
Graphene Oxide/Polyaniline Nanocomposites Used in Anticorrosive Coatings for Environmental Protection |
title_full_unstemmed |
Graphene Oxide/Polyaniline Nanocomposites Used in Anticorrosive Coatings for Environmental Protection |
title_sort |
graphene oxide/polyaniline nanocomposites used in anticorrosive coatings for environmental protection |
publisher |
MDPI AG |
series |
Coatings |
issn |
2079-6412 |
publishDate |
2020-12-01 |
description |
In recent years, metal corrosion causes serious threats to the economy of the world and the living environment. Hence, it is very important to seek non-toxic and environmentally friendly materials with metal anti-corrosion properties for the sustainable development of society. The barrier properties of graphene oxide (GO) and the special electrochemical property of polyaniline (PANI) can significantly improve the corrosion resistance of metals. Herein, we developed an in-situ polymerization method to prepare graphene oxide/polyaniline (GO/PANI) nanocomposites with unique anti-corrosion properties. The obtained GO/PANI nanocomposites were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermalgravimetric analysis, UV–vis spectroscopy and scanning electron microscopy. The as-prepared composite materials were uniformly dispersed in epoxy resin to prepare anticorrosive coatings and coated on the surface of steel. The anti-corrosion performance of the coatings was measured by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization technique. The EIS results showed that the total impedance of epoxy/GO/PANI coatings is greater than epoxy/PANII coatings, and the impedance module value can reach 8.67 × 10<sup>8</sup> Ω·cm<sup>2</sup>. In general, it is concluded that the anti-corrosion performance of GO/PANI coating is significantly higher than PANI coating and pure GO coating. |
topic |
polyaniline graphene oxide epoxy resin corrosion |
url |
https://www.mdpi.com/2079-6412/10/12/1215 |
work_keys_str_mv |
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