论文列表
论文列表
Synthesis of Yolk-shell Fe3O4@void@CeO2 Nanoparticles and Their Application in SERS
来源: | 作者:刘志国 | 发布时间: 2021-02-06 | 82 次浏览 | 分享到:
Xinlu Zheng, Weiwei Zhang, Jinlong Zhang* and Lingzhi Wang*
Applied Surface Science Volume 541, 1 March 2021, 148422
https://doi.org/10.1016/j.apsusc.2020.148422

Yolk-shell (YS) Fe3O4@void@CeO2 was alkaline-etched from Fe3O4@SiO2@CeO2 and applied as a magnetically recyclable SERS substrate. Using methylene blue (MB) as the analyte model, high SERS sensitivity was revealed with an enhanced factor of 1.1×104. The enhanced light-scattering ability of the YS structure plays a vital role in the high SERS activity. Moreover, the improved molecule adsorption benefitting from the more exposed surface partly contributes to the improved Raman signal. The composite can be conveniently recycled through magnetic separation and light irradiation due to the photocatalytic degradation of MB molecules by CeO2.