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Amorphous Mesoporous Magnesium Carbonate as a Functional Support for UV-Blocking Semiconductor Nanoparticles for Cosmetic Applications
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanotechnology and Functional Materials)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanoteknologi och funktionella material)ORCID iD: 0000-0002-4072-4324
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.ORCID iD: 0000-0002-5496-9664
2019 (English)In: ACS Omega, ISSN 2470-1343, Vol. 4, no 2, p. 4429-4436Article in journal (Refereed) Published
Abstract [en]

Highly porous amorphous mesoporous magnesium carbonate (MMC) with a Brunauer–Emmett–Teller (BET) surface area over 600 m2·g–1 was evaluated as a micrometer-sized support for TiO2 and ZnO semiconductor nanoparticles. The resulting MMC-TiO2-ZnO contained 25 wt % TiO2 and 25 wt % ZnO incorporated into an MMC structure without blocking the pores as revealed by nitrogen sorption isotherms, scanning electron microscopy, and transmission electron microscopy. In vitro ultraviolet (UV) light-blocking experiments showed that the MMC-TiO2-ZnO had comparable UV-blocking ability as a TiO2 and ZnO nanoparticle mixture containing the same amount of semiconductor particles without a support. Amaranth dye degradation studies revealed that MMC was able to diminish the catalytic activity of TiO2 and ZnO nanoparticles, possibly due to the presence of free carbonate ions in MMC as well as in the dye solution. In summary, this paper demonstrated for the first time that micrometer-sized particles of the recently emerged MMC materials can be used as a support for sun-blocking semiconductor nanoparticles without compromising their UV blocking ability and with significantly lowered photocatalytic activity. When used in a formulation as a support for semiconductor nanoparticles, MMC may also reduce the risk of nanoparticle exposure, and the high porosity of MMC-TiO2-ZnO may be utilized for the delivery of therapeutic agents to the skin.

Place, publisher, year, edition, pages
2019. Vol. 4, no 2, p. 4429-4436
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
URN: urn:nbn:se:uu:diva-379180DOI: 10.1021/acsomega.8b03498ISI: 000460237300215OAI: oai:DiVA.org:uu-379180DiVA, id: diva2:1295905
Funder
Swedish Research Council, 2014-3929Available from: 2019-03-13 Created: 2019-03-13 Last updated: 2019-03-25Bibliographically approved

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Åhlén, MichelleCheung, OceanStrömme, Maria

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