Application of Biochar Nanoparticles in Zinc Epoxy Coatings

Ziyou Li, Huichao (Teresa) Bi*, Claus Erik Weinell, Kim Dam-Johansen

*Corresponding author for this work

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

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Woody biomass-derived biochar nanoparticles were successfully produced and incorporated into zinc epoxy coating formulations with zinc loading in the range of 10 vol.% to 30 vol.%. The anticorrosive performance of modified coatings was evaluated and compared to the unmodified coatings.

Barrier protection was enhanced by the modification, especially on formulations with lower zinc content (10 vol.% and 22 vol.%). Galvanic protection was remarkably extended on coatings modified by partly gasified biochar nanoparticles with 30 vol.% zinc loading, and the efficient galvanic protection period was increased from around 100 h to more than 600 h when being immersed in 3.5 wt.% solutions. The post-exposure characterizations revealed that the zinc utilization rate was upgraded.

The improvement was attributed to the filling of micropores and the extra electrical connections provided by biochar nanoparticles. This study imparts a sustainable solution for enhancing the anticorrosive performance of zinc epoxy coatings.
Original languageEnglish
Publication date2023
Number of pages1
Publication statusPublished - 2023
EventEUROCORR 2023: European Corrosion Congress - Brussels, Belgium
Duration: 27 Aug 202331 Aug 2023


ConferenceEUROCORR 2023: European Corrosion Congress


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