Single crystalline CeO2 nanotubes

• 作者: Fangxian Cao Mingkai Zhang Kaili Yang Zhimin Tian Jing Li Yongquan Qu
• 来源期刊: 纳米研究（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: Research Articles
• 页码范围: 715-719
• 页数: 5页
• 语种: 英文

摘要

Here,we report a facile synthetic methodology to prepare uniform single crystalline CeO2 nanotubes through a hydrothermal transformation of CeO2 nanorods in aqueous Ce(NO3)3 solution.A chemically driven etching-dissolution-deposition mechanism is proposed,involving the surface Ce3+ hydrolysis and dissolution at tips of nanorods and subsequent redeposition and crystallization on the outer sides of nanorods.Compared to CeO2 nanorods,CeO2 nanotubes exhibited the richer structural defects,higher reducibility and larger surface area,leading to a higher haloperoxidase-like activity.