Premium
Dual Template Engaged Synthesis of Hollow Ball‐in‐Tube Asymmetrical Structured Ceria
Author(s) -
Wang Yong,
Gao Daowei,
Li Cuncheng,
Li Chunsheng,
Rosei Federico,
Ma Dongling,
Chen Guozhu
Publication year - 2018
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.201700367
Subject(s) - materials science , nanorod , catalysis , chemical engineering , nanotechnology , template method pattern , composite number , tube (container) , nanoparticle , ball (mathematics) , ball mill , composite material , chemistry , organic chemistry , geometry , engineering , mathematics
Hollow materials with different configurations are of interest due to their unique structural features, which induce interesting properties e.g. catalysis. Here, the synthesis of asymmetrical hollow ball‐in‐tube (HBT) structured CeO 2 is reported, which is achieved using a dual template engaged solid–liquid interfacial reaction. In this reaction, the SiO 2 sphere (hard template)‐embedded Ce(OH)CO 3 nanorod (sacrificial template) composite is first treated with NaOH solution, followed by an acid wash to obtain asymmetrical hollow structured CeO 2 . Such HBT structured CeO 2 is demonstrated to be a good support for Au nanoparticles toward CO oxidation as compared to simple hollow CeO 2 nanotubes, leading to significantly increase catalytic activity.