Hollow single-crystal spinel nanocubes: the case of zinc cobalt oxide grown by a unique Kirkendall effect.
Small hollow nanocubes of the ternary spinel Zn x Co 1- x Co 2O 4 of ca. 18 nm dimension were prepared via a facile hydrothermal route. A growth mechanism is suggested in which solid single-crystal Co 3O 4 nanocubes are gradually converted to hollow single-crystal Zn x Co 1- x Co 2O 4 nanocubes with preservation of the spinel framework through differential diffusion of Zn (2+) and Co (2+) ions. With the cation exchange, the chemical composition and thus physical properties can be tailored.
State Key Laboratory of Optoelectronic Materials and Technology, School of Chemistry and Chemical Engineering, Instrumental Analysis and Research Center, Sun Yat-Sen (Zhongshan) University, Guangzhou, People's Republic of China.
Li
L
Tian
Xianfeng
X
Yang
Ping
P
Lu
Ian D
ID
Williams
Caihong
C
Wang
Shunying
S
Ou
Chaolun
C
Liang
Mingmei
M
Wu
D003035:Cobalt / Q000737:chemistry*; D003460:Crystallization; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D017967:Zinc Compounds / Q000737:chemistry*
D010087:Oxides; D017967:Zinc Compounds; D003035:Cobalt; C060728:cobalt oxide