The Encapsulation of Natural Organic Dyes on TiO₂ for Photochromism Control.

ABSTRACT: Titanium dioxide (TiO₂) plays a pivotal role in photocatalytic reactions and holds great promise for the cosmetic and paint industries due to its white color and high refractive index. However, the original color of TiO₂ changes gradually to blue or yellow with UV irradiation, which affects its color realization. We encapsulated TiO₂ with several natural organic dye compounds, including purpurin, curcumin, and safflower, to control its photochromism and realize a range of different colors. The chemical reaction between TiO₂ and dyes based on their functional group was investigated, and the light absorption was tested via FTIR and UV-Vis spectroscopy. The changes in morphology and size distribution additionally supported their successful encapsula

SUBMITTER: Lee HJ 

PROVIDER: S-EPMC10178252 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature