Composite of Graphene Oxide/Cerium-based Metal Organic Frameworks for Preparing Protective Coatings with High Stability and Long-term Corrosion Resistance

doi:10.11902/1005.4537.2025.315

Journal of Chinese Society for Corrosion and protection

2026, Vol. 46

Issue (4): 1095-1106 DOI: 10.11902/1005.4537.2025.315

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Composite of Graphene Oxide/Cerium-based Metal Organic Frameworks for Preparing Protective Coatings with High Stability and Long-term Corrosion Resistance

KE Dingfang¹^,², WU Fangfang¹^,², ZHU Zhaobin¹^,²(

), XIE Shengyi¹^,², HONG Jing¹^,², CHEN Yue¹^,², LI Liang¹^,², LI Hao³, CAO Fahe³

^1.Zhejiang Huadian Equipment Testing and Research Institute Co. Ltd., Hangzhou 310007, China
^2.SGCC-Testing Technology Laboratory of Electrical Equipment Safety Performance, Hangzhou 310007, China
^3.School of Materials, Sun Yat-sen University, Shenzhen 518107, China

Cite this article:

KE Dingfang, WU Fangfang, ZHU Zhaobin, XIE Shengyi, HONG Jing, CHEN Yue, LI Liang, LI Hao, CAO Fahe. Composite of Graphene Oxide/Cerium-based Metal Organic Frameworks for Preparing Protective Coatings with High Stability and Long-term Corrosion Resistance. Journal of Chinese Society for Corrosion and protection, 2026, 46(4): 1095-1106.

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Abstract

Incorporating functionalized graphene oxide (GO) composites as fillers can enhance the service life of organic coatings in marine environments. However, their synthesis methods typically involve the use of toxic reagents and high energy consumption, which increase production costs and restrict practical applicability. To address this, a novel composite of GO-CeMOF were prepared via in situ growth of cerium-based metal-organic frameworks (CeMOFs) on GO surface in aqueous solution at ambient temperature. Then particulates of the composite as fillers were blended with epoxy paint to prepare the GO-CeMOF-EP composite coating on carbon steel Q235. It follows that the CeMOFs were uniformly distributed on GO nanosheets, thus of which the agglomeration and stacking could be effectively suppressed. Cross-sectional analysis revealed that the GO-CeMOF particulates were uniformly distributed within the formed GO-CeMOF-EP coating and the coating is compact with optimal interfacial adhesion strength (4.56 MPa) and minimal water adsorption (0.73%). After immersion test in simulated seawater for 60 d, the Z_{f = 0.01 Hz} value of GO-CeMOF-EP coating (1.0 × 10⁹ Ω·cm²) represented 20.8-fold and 10.0-fold improvements corresponding over the plain EP (4.8 × 10⁷ Ω·cm²) and GO-EP (1.0 × 10⁸ Ω·cm²) coatings, respectively. After peeling off the GO-CeMOF-EP coating, no apparent corrosion was observed on the Q235 steel substrate, further verifying the long-term and reliable corrosion protection performance of the coating. Therefore, this innovative, efficient, and simple design strategy is expected to improve the protective performance of coatings and prolong the service life of metallic equipment in harsh marine environments.

Key words: graphene oxide metal-organic framework marine coating corrosion protection electrochemistry

Received: 12 October 2025 32134.14.1005.4537.2025.315

ZTFLH:

TG172

Fund: Project of Hangzhou Science and Technology Development Program(20241203A22)

Corresponding Authors: ZHU Zhaobin, E-mail: 3515636807@qq.com

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	Articles by authors
	KE Dingfang
	WU Fangfang
	ZHU Zhaobin
	XIE Shengyi
	HONG Jing
	CHEN Yue
	LI Liang
	LI Hao
	CAO Fahe

URL:

https://www.jcscp.org/EN/10.11902/1005.4537.2025.315 OR https://www.jcscp.org/EN/Y2026/V46/I4/1095

Fig.1 Schematic diagram of the preparation of GO-CeMOF composites

Fig.2 SEM (a, b) and TEM (c, d) images of GO (a, c) and GO-CeMOF (b,d), and C, O, and Ce elements distribution of GO-CeMOF (e)

Fig.3 XRD (a), FT-IR (b) and TGA (c) spectra of GO and GO-CeMOF

Fig.4 Survey spectra (a), and C 1s (b), O 1s (c) and Ce 3d (d) high-resolution spectra of GO-CeMOF

Fig.5 Cross-sectional morphologies of various coatings: (a) EP, (b) GO-EP, and (c) GO-CeMOF-EP coatings

Fig.6 Water adsorption rate (a) and adhesion force (b) of EP, GO-EP, and GO-CeMOF-EP coatings

Fig.7 Nyquist (a1-c1) and Bode (a2-c2, a3-c3) plots of EP (a1-a3), GO-EP (b1-b3), and GO-CeMOF-EP (c1-c3) coatings during the immersion in 3.5%NaCl solution for 60 d

Fig.8 Equivalent circuit used to fit all electrochemical data

Fig.9 Electrochemical parameters of different coatings: (a) low-frequency impedance modulus lg|Z_{f = 0.01 Hz}|, (b) coating capacitance value lgC_c and (c) charge transfer resistance value R_ct

Fig.10 Corrosion morphology and element distribution of the metal substrate beneath various coating protections: (a1-a3) EP, (b1-b3) GO-EP, and (c1-c3) GO-CeMOF-EP

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