Metallic iron oxide nanoparticle-modified graphene oxide (GO) sheets were well applied for stabilizing oil-in-water (O/W) Pickering emulsion, because they were easy to fabricate via a redox reaction between metal salt and GO nanosheets. A systematical investigation was conducted on the impacts of metal salt concentration for preparing the nanoparticle-modified GO, GO aqueous dispersion concentrations and the mass ratios of GO/oil phase on the characteristics of Pickering emulsion. As revealed from the outcomes, the graphene oxide encapsulated GMA microcapsules (GMA@GOMCs) exhibited high loading capacity and thin shell thickness. Then, the microcapsules were embedded into water borne epoxy matrix and fabricated the coating which were capable of healing themselves over surface of hot-dip galvanized steels, as only supplementing a less amounts of microcapsules might achieve almost repaired completely. It’s expected that the GOMCs based on Pickering emulsions can be applicable in a wide range of applications, such as automotive field, weather and marine environments.

金属氧化铁纳米粒子改性的氧化石墨烯（GO）片材很容易用于稳定水包油（O / W）Pickering乳液，因为它们很容易通过金属盐和GO纳米片材之间的氧化还原反应制造。对金属盐浓度对制备纳米颗粒改性GO，GO水分散体浓度以及GO /油相质量比对Pickering乳液特性的影响进行了系统的研究。从结果中可以看出，氧化石墨烯封装的GMA微胶囊（GMA @ GOMC）表现出高负载能力和薄壳厚度。然后，将微胶囊嵌入水性环氧基质中，并制备能够在热浸镀锌钢表面上自我修复的涂层，因为仅补充少量的微胶囊就可以达到几乎完全修复的目的。预计基于Pickering乳液的GOMC可以广泛应用于各种领域，例如汽车领域，天气和海洋环境。