Fabrication and Anticorrosion Performance of the Composite Coating Based on PANI and ZIFs Fillers

doi:10.11901/1005.3093.2026.144

Chinese Journal of Materials Research

2026, Vol. 40

Issue (9): 685-696 DOI: 10.11901/1005.3093.2026.144

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Fabrication and Anticorrosion Performance of the Composite Coating Based on PANI and ZIFs Fillers

XU Chun, LIAO Zhongyi, ZHANG Han, XU Meng, YUAN Yan, JIANG Li(

)

School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou 215009, China

Cite this article:

XU Chun, LIAO Zhongyi, ZHANG Han, XU Meng, YUAN Yan, JIANG Li. Fabrication and Anticorrosion Performance of the Composite Coating Based on PANI and ZIFs Fillers. Chinese Journal of Materials Research, 2026, 40(9): 685-696.

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Abstract

To enhance the corrosion resistance of stainless steel, this study developed a composite nanofiller, ZIF-8/GO/Phen, composed of a zeolite imidazolate framework (ZIF-8), graphene oxide (GO), and the corrosion inhibitor 1,10-phenanthroline (Phen). This filler was incorporated into an epoxy acrylate resin (EA) matrix to fabricate a ZIF-8/GO/Phen-EA anti-corrosion coating. Furthermore, polyaniline (PANI) was subsequently electrodeposited to construct a dual-layer coating system (PANI/ZIF-8/GO/Phen-EA) with synergistic protective functions, including physical barrier, anodic protection, and inhibitor release capabilities. The composition, structure, and morphology of the synthesized materials were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). The acidic corrosive environment was simulated using 0.1 mol/L hydrochloric acid solution, and the anticorrosion performance and service stability of the coating were systematically assessed using electrochemical techniques. The results indicated that the incorporation of ZIF-8/GO/Phen markedly improved the compactness of the coating, imparted active protection functionality, and strengthened its barrier effect against corrosive media. At a filler content of 1.5%, the ZIF-8/GO/Phen-EA inner-layer coating exhibited optimal corrosion resistance. After the introduction of the PANI outer layer, the self-corrosion current density of the composite coating further decreased, accompanied by a significant increase in impedance modulus. This resulting PANI/ZIF-8/GO/Phen-EA composite coating demonstrated good self-healing capability, effectively inhibiting the corrosion process of stainless steel in acidic environments.

Key words: surface and interface in the materials ZIF-8 graphene oxide Inhibitor PANI active protection

Received: 18 March 2026

ZTFLH:

TG174.4

Fund: National Natural Science Foundation of China(22202142)

Corresponding Authors: JIANG Li, Tel: 15150517328, E-mail: jl@mail.usts.edu.cn

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	XU Chun
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	JIANG Li

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https://www.cjmr.org/EN/10.11901/1005.3093.2026.144 OR https://www.cjmr.org/EN/Y2026/V40/I9/685

Fig.1 Infrared spectra of ZIF-8 system nanoparticles and Phen

Fig.2 XPS spectra of ZIF-8/GO/Phen nanoparticles

Fig.3 SEM images of ZIF-8/GO (a, b) and ZIF-8/GO/Phen (c, d)

Fig.4 SEM images of PANI/ZIF-8/GO/Phen-EA (a, b) and ZIF-8/GO/Phen-EA (c, d) coatings

Fig.5 Nyquist plots of ZIF-8/GO/Phen-EA composite coatings with different ratios

Fig.6 Nyquist plots of 1.5%ZIF-8/GO/Phen-EA composite coating during long-term service

Fig.7 Equivalent circuit diagrams for the ZIF-8/GO/Phen-EA (a) and PANI/ZIF-8/GO/Phen-EA (b) coating systems

Table1 The fitted EIS parameters of 1.5%ZIF-8/GO/Phen-EA coating during long-term service

Fig.8 Nyquist plots of 1.5%PANI/ZIF-8/GO/Phen-EA composite coating during long-term service

Table2 Fitted EIS parameters of 1.5%PANI/ZIF-8/GO/Phen-EA composite coating during long-term service

Fig.9 Potentiodynamic polarization curves of PANI/ZIF-8/GO/Phen-EA composite coatings and four ZIF-8/GO/Phen-EA coatings with different ZIF-8/GO/Phen ratios

Table3 The fitted potentiodynamic parameters of ZIF-8/GO/Phen-EA coatings with different ZIF-8/GO/Phen ratios and PANI/ZIF-8/GO/Phen-EA composite coating

Fig.10 SEM images of PANI/ZIF-8/GO/Phen-EA (a, b) and ZIF-8/GO/Phen-EA (c, d) coatings after long-term service

Fig.11 Nyquist plots, Bode plots and OCP curves versus time of scratched 1.5%ZIF-8/GO/Phen-EA composite coatings (a1-c1) and 1.5%PANI/ZIF-8/GO/Phen-EA coatings (a2-c2)

Table 4 Fitted EIS parameters of the scratched 1.5%ZIF-8/GO/Phen-EA coating during one-week service

Table 5 Fitted EIS parameters of the scratched PANI/ZIF-8/GO/Phen-EA composite coating during one-week service

Fig.12 Schematic diagram of the anticorrosion mechanism of PANI/ZIF-8/GO/Phen-EA composite coating

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