Single crystalline CeO2 nanotubes

被引：18
作者：
Cao, Fangxian [1 ]
Zhang, Mingkai [1 ]
Yang, Kaili [1 ]
Tian, Zhimin [1 ]
Li, Jing [2 ]
Qu, Yongquan [1 ,3 ]
机构：
[1] Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, Xian 710049, Peoples R China
[2] Liaocheng Univ, Coll Chem & Chem Engn, Liaocheng 252059, Shandong, Peoples R China
[3] Northwestern Polytech Univ, Key Lab Special Funct & Smart Polymer Mat, Minist Ind & Informat Technol, Sch Chem & Chem Engn, Xian 710072, Peoples R China
来源：
NANO RESEARCH | 2021年 / 14卷 / 03期
基金：
中国国家自然科学基金;
关键词：
CeO2; nanorod; hydrothemal transformation; nanotube; etching-dissolution-deposition mechanism; haloperoxidase-like activity; NANORODS; SURFACES; DEFECTS; CERIA;
D O I：
10.1007/s12274-020-3103-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Here, we report a facile synthetic methodology to prepare uniform single crystalline CeO(2)nanotubes through a hydrothermal transformation of CeO(2)nanorods in aqueous Ce(NO3)(3)solution. A chemically driven etching-dissolution-deposition mechanism is proposed, involving the surface Ce(3+)hydrolysis and dissolution at tips of nanorods and subsequent redeposition and crystallization on the outer sides of nanorods. Compared to CeO(2)nanorods, CeO(2)nanotubes exhibited the richer structural defects, higher reducibility and larger surface area, leading to a higher haloperoxidase-like activity.
引用
收藏
页码：715 / 719
页数：5
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