Shape-controlled synthesis and characterization of cobalt oxides hollow spheres and octahedra

被引：55

作者：

Shi, Rongrong ^{[1
,2
,3
]}

Chen, Gen ^{[1
]}

Ma, Wei ^{[1
]}

Zhang, Dan ^{[1
]}

Qiu, Guanzhou ^{[1
]}

Liu, Xiaohe ^{[1
,2
]}

机构：

[1] Cent S Univ, Dept Inorgan Mat, Changsha 410083, Hunan, Peoples R China

[2] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

[3] Lanzhou Univ, Inst Mat Sci & Engn, Lanzhou 730000, Peoples R China

来源：

DALTON TRANSACTIONS | 2012年 / 41卷 / 19期

基金：

中国国家自然科学基金;

关键词：

CO3O4; THIN-FILMS; THERMAL-DECOMPOSITION; COO; NANOCRYSTALS; NICKEL; FABRICATION; NANOFIBERS; SPECTRA; GROWTH;

D O I：

10.1039/c2dt12403c

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

We demonstrated that single-crystalline cobalt monoxide (CoO) hollow spheres and octahedra could be selectively synthesized via thermal decomposition of cobalt(II) acetylacetonate in 1-octadecene solvent in the presence of oleic acid and oleylamine. The morphologies and sizes of as-prepared CoO nanocrystals could be controlled by adjusting the reaction parameters. Cobalt oxide (Co3O4) hollow spheres and octahedra could also be selectively obtained via calcination method using corresponding CoO hollow spheres and octahedra as precursors. The morphology, size and structure of the final products were investigated in detail by XRD, SEM, TEM, HRTEM, DSC, TG, and XPS. The results revealed that the electrochemical performance of cobalt oxide hollow spheres is much better than that of cobalt oxide octahedra, which may be related to the degree of crystallinity, size, and morphology of cobalt oxides.

引用

页码：5981 / 5987

页数：7

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