In-situ low-temperature sol-gel growth of nano-cerium oxide ternary composite films for ultraviolet blocking

作者：Lu, Lulu; Dai, Guolun; Yan, Liuliu; Wang, Lijin; Wang, Lingnan; Wang, Zefeng^*; Wei, Kun^*

来源：Optical Materials, 2020, 101: 109724.

DOI：10.1016/j.optmat.2020.109724

• In-situ low-temperature sol-gel growth
• Nano-cerium oxide
• Composite films
• Ultraviolet blocking

Zein was used as the substrate to provide in situ growth sites the nano-cerium oxide (CeO2), a hydrophilic polymer polyvinyl pyrrolidone (PVP) served as stabilizer for nano-ceria, novel zein/PVP/CeO2 ternary composite films have been successfully designed by the in situ low-temperature (ISLT) sol-gel growth. Different from the simple conventional low-temperature (CLT) sol-gel method, nano-cerium oxide shows controllable shape, narrow size distribution and good dispersivity. In addition, the CeO2-embedded hybrid films exhibit superior ultraviolet (UV) blocking properties, high transparency and hygroscopic capacity, which broaden the practical application range of nano-cerium oxide.

• 单位
  中国科学院研究生院