Journal
CHEMOSPHERE
Volume 269, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2020.129311
Keywords
Cellulose nanofiber; Reverse core shell particles; Ultraviolet absorbance and photocatalysis activity
Categories
Funding
- Human Resources Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Korea government Ministry of Trade, industry Energy (MOTIE) [20184030202260]
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2019R1F1A1063622]
- R&D Program for Forest Science Technology by Korean Forest Service (Korean Forestry Promotion Institute) [FTIS2020214D10-2022-AC01]
- National Research Foundation of Korea [2019R1F1A1063622] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Research has shown that zinc oxide nanostructures in the cosmetic industry can better protect the skin from UV damage and reduce photocatalytic activity. Structures synthesized with silica as core-shell or reverse core-shell show better performance in neutralizing free radicals and maintaining nanoscale dimensions.
The protection of skin cells against intense ultra-violet (UV) rays is of greater concern and needs immediate attention. Sustainable efforts and strategies are in progress to minimize the factors that adversely affect skin cells. Herein, we synthesized zinc oxide (ZnO) in the form of core-shell (Core@Shell) or reverse core-shell (RCore@Shell) structure where silica was synthesized as a shell or core, respectively on the surface of cellulose nanofiber (CNF). Both cases exhibited much higher UV-blocking performance as well as alleviate the whitening effect because these particles retain their nanoscale dimensions as favored by the cosmetic industry. Significantly, these nanostructures shows the less photocatalysis activity than that of pristine ZnO nanoparticles. And we found that the photocatalytic activity of ZnO in RCore@Shell/CNF was more suppressed that Core@Shell/CNF, showing that it is a proper structure to neutralize or scavenge free radicals prior to their exit from the particles. Our results suggest that, reduction in photocatalysis induced by Core@Shell/CNF and RCore@Shell/CNF nanostructures is a promising strategy for skincare products in cosmetic industry. (C) 2020 Elsevier Ltd. All rights reserved.
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