PMID- 33992004 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210702 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 417 DP - 2021 Sep 5 TI - GO-Ti(3)C(2) two-dimensional heterojunction nanomaterial for anticorrosion enhancement of epoxy zinc-rich coatings. PG - 126048 LID - S0304-3894(21)01012-8 [pii] LID - 10.1016/j.jhazmat.2021.126048 [doi] AB - MXenes are a unique family of two-dimensional (2D) transition metal carbides and/or nitrides, which have been proven useful for energy storage, water purification, and biomedical applications. Herein, a kind of heterojunction structure was designed by grafting highly conductive MXene (Ti(3)C(2)) on the graphene oxide (GO) nanosheets, which was confirmed by Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectronic spectroscopy (XPS) and Raman results. Open circuit potential (OCP), electrochemical impedance spectroscopy (EIS) and salt spray measurements corroborated that inclusion of 0.5 wt% Ti(3)C(2) or GO-Ti(3)C(2) into epoxy zinc-rich coating (ZRC) effectively enhance the cathodic protection capability. Additionally, superior corrosion resistance was achieved by incorporation of GO-Ti(3)C(2) into ZRC since GO-Ti(3)C(2) in the coating improved the utilization rate of zinc particles and GO provided barrier protection for inhibiting the diffusion of corrosive agents. At the end of immersion, R(c) value of ZRC/GO-Ti(3)C(2) coating was 3.047 x 10(4) Omega.cm(2), which was one order of magnitude higher than that of ZRC coating. Scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS) measurements demonstrated that ZRC/GO-Ti(3)C(2) coating exhibited lower speed of zinc particles oxidation and intact steel substrate. Hence, ZRC/GO-Ti(3)C(2) coating exhibited the optimal corrosion resistance among the four kinds of coatings. CI - Copyright (c) 2021 Elsevier B.V. All rights reserved. FAU - Shen, Lu AU - Shen L AD - School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China. FAU - Zhao, Wenjie AU - Zhao W AD - Key Laboratory of Marine Materials and Related Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China. Electronic address: zhaowj@nimte.ac.cn. FAU - Wang, Kui AU - Wang K AD - School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China. FAU - Xu, Jianguang AU - Xu J AD - School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China. LA - eng PT - Journal Article DEP - 20210507 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 SB - IM OTO - NOTNLM OT - Epoxy zinc-rich coating OT - GO-Ti(3)C(2) OT - Heterojunction nanomaterial OT - Synergistic enhancement EDAT- 2021/05/16 06:00 MHDA- 2021/05/16 06:01 CRDT- 2021/05/15 20:27 PHST- 2021/02/01 00:00 [received] PHST- 2021/05/01 00:00 [revised] PHST- 2021/05/03 00:00 [accepted] PHST- 2021/05/16 06:00 [pubmed] PHST- 2021/05/16 06:01 [medline] PHST- 2021/05/15 20:27 [entrez] AID - S0304-3894(21)01012-8 [pii] AID - 10.1016/j.jhazmat.2021.126048 [doi] PST - ppublish SO - J Hazard Mater. 2021 Sep 5;417:126048. doi: 10.1016/j.jhazmat.2021.126048. Epub 2021 May 7.