This article is cited in 4 papers

Communications

Effect of the formation of open microcapsules with Mn₃O₄ walls during hydrolysis of the MnSO₄ salt solution droplets deposited on the alkaline solution surface

V. P. Tolstoy, D. V. Danilov, A. A. Meleshko

Institute of Chemistry, St. Petersburg State University, St. Petersburg, Russian Federation

Abstract: It was shown for the first time that open microcapsules 1–5 µm in size with Mn₃O₄ walls and unique morphology are formed as a result of spraying an aqueous MnSO₄ solution onto the surface of an alkali solution. The walls have a thickness of 80–120 nm and consist of an array of Mn₃O₄ nanosheets with a thickness of 2–3 nm, oriented predominantly in the radial direction towards the center of the microcapsule. There is a special rim with a height of 100–200 nm around the hole of the most microcapsules, which can be a kind of ‘ground’ when fixing such microcapsules on the surface of a substrate in the process of application by the Langmuir–Schaefer technique.

Keywords: Mn₃O₄, hausmannite, microcapsules, spray, air–solution interface.

Language: English

DOI: 10.1016/j.mencom.2024.04.038

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