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Preparation of ZnO quantum dots@SiO2/PVA for multifunctional coating on PET

Abstract

ZnO quantum dots@SiO2 (ZnO QDs@SiO2) was synthesized by a modified sol-gel method, and then it was added to polyvinyl alcohol (PVA) to form an ink-absorbing coating with ultraviolet shielding performance on poly(ethylene terephthalate) (PET) film. A layer of silica encapsulated on the surface of ZnO QDs not only reduces the photocatalytic activity significantly, but also prevents the agglomeration of ZnO QDs in aqueous solution. The UV-vis transmittance spectrum of the as-prepared ink-absorbing coating displayed excellent shielding performance in the ultraviolet region (<355 nm) and high transmittance in the visible region. Even exposed to 30 W ultraviolet for 100 h, no obvious changes were observed in its UV-vis transmittance spectra, showing long-term durability. Notably, the ink absorption of ink-absorbing coating prepared by ZnO QDs@SiO2 is higher than that of ink-absorbing coating prepared by commercially available silica. Therefore, a durable, highly transparent and ultraviolet shielded inkjet printing coating on PET can be prepared with ZnO QDs@SiO2 nanoparticles.

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Supplementary files

Article information


Submitted
20 Nov 2019
Accepted
23 Dec 2019
First published
02 Jan 2020

New J. Chem., 2020, Accepted Manuscript
Article type
Paper

Preparation of ZnO quantum dots@SiO2/PVA for multifunctional coating on PET

L. Ding, Y. Chen, Z. Hua, L. Liu, H. Chen, Z. Zhong, Y. Du and Y. Huang, New J. Chem., 2020, Accepted Manuscript , DOI: 10.1039/C9NJ05774A

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