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Highly hydrophilic TiO2 nanoparticles as stabilizers of Pickering emulsions with photosensitive lipophilic compounds: synthesis and applicationстатья
- Авторы: Chikanova Ekaterina, Lomakina Maria, Shtansky Dmitry, Барилюк Д.В.
- Журнал: Journal of Physical Chemistry B
- Том: 128
- Номер: 32
- Год издания: 2024
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 7903
- Последняя страница: 7911
- DOI: 10.1021/acs.jpcb.4c03315
- Аннотация: Pickering emulsions are a very promising system for encapsulating andphotoprotecting active ingredients. The highest photoprotection efficiency can be achievedwhen bare TiO2 nanoparticles are used as stabilizers. However, the main problem when usinghighly hydrophilic TiO2 nanoparticles is their inability to adsorb at the oil−water interface. Here,we developed emulsions stabilized by bare, highly hydrophilic TiO2 nanoparticles for theencapsulation and photoprotection of active lipophilic compounds. Emulsion stabilization occursdue to the formation of hydrogen bonds between hydroxyl groups on the particle surface and thecarbonyl groups of the oil molecules. The stability and rheological properties of emulsions areexplained by the properties of the initial hydrosols. The resulting Pickering emulsionsdemonstrated effective UV protection of α-lipoic acid. Our results pave the way for theformulation of Pickering emulsions with a widely used cosmetic oil and show for the first timethe possibility of photoprotection of a lipophilic active substance using unmodified TiO2nanoparticles.
- Добавил в систему: Ломакина Мария Андреевна