A core-shell composite pigment with rutile TiO2 intensification for UV inhibition
| Autor: | Haiping Zhang, Yuanyuan Shao, Jesse Zhu, Baowei Yan, Hui Zhang, Xiao Qing Lv |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Materials science
General Chemical Engineering Composite number Shell (structure) 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology medicine.disease_cause 01 natural sciences Fluorescence 0104 chemical sciences Core shell Pigment Chemical engineering Rutile visual_art visual_art.visual_art_medium medicine Shielding effect General Materials Science sense organs 0210 nano-technology Ultraviolet |
| Zdroj: | Particuology. 67:18-26 |
| ISSN: | 1674-2001 |
| DOI: | 10.1016/j.partic.2021.09.010 |
| Popis: | Organic pigments generally have bright colors but poor ultraviolet (UV) resistance. To improve the UV resistance and extend the applications, a core-shell composite pigment with rutile TiO2 intensification for UV inhibition is proposed by a facile sol-gel method in this work. A core-shell structure, with a homogeneous sol-gel TiO2 shell containing additional nanosized rutile TiO2 particles and with the pigment as the core, was established taking advantage of UV resistance of TiO2 and binding ability of sol-gel. While the sol-gel TiO2 shell alone has already shown obvious ultraviolet shielding effect, as tested over different sol-gel aging times and TiO2 loadings, the UV resistance of the fluorescent pigments was further enhanced by binding the nanosized rutile TiO2 in the sol-gel shell. At a sol-gel TiO2 to rutile TiO2 ratio of 2:1, the UV exposure time is extended about eight times compared with that of the original pigment and twice as that of the modified pigment with pure sol-gel TiO2 for the same color change. Therefore, the novel core-shell composite pigment intensified with nanosized rutile TiO2 particles is proved to be efficient in improving the UV resistance of organic pigments. |
| Databáze: | OpenAIRE |
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