Direct synthesis of hollow vaterite nanospheres from amorphous calcium carbonate nanoparticles via phase transformation

被引：66

作者：

Cai, Anhua ^{[1
,3
]}

Xu, Xurong ^{[1
,3
]}

Pan, Haihua ^{[1
,3
]}

Tao, Jinhui ^{[1
,3
]}

Liu, Rui ^{[1
,3
]}

Tang, Ruikang ^{[1
,3
]}

Cho, Kilwon ^{[2
]}

机构：

[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China

[2] Pohang Univ Sci & Technol, Polymer Res Inst, Dept Chem Engn, Pohang 790784, South Korea

[3] Zhejiang Univ, Ctr Biomat & Biopathways, Hangzhou 310027, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 30期

关键词：

D O I：

10.1021/jp801408k

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：

A new and simple method for preparation of hollow calcium carbonate nanospheres under mild conditions is developed. Hollow vaterite nanospheres are achieved by water-induced phase transformation of poly(4-sodium styrene sulfonate)-stabilized amorphous calcium carbonate (PSS-ACC) in water-ethanol solution at room temperature. It is found that the sizes of the resulting hollow-structured nanospheres can be easily regulated by the content of PSS and the phase transformation can be greatly affected by the ratio of water to ethanol in the mixed solvent. A combination effect of PSS and water is emphasized in this formation process. It is important to control the amounts of PSS and water in the experiments so that a large scale of hollow vaterite nanospheres with different sizes can be achieved. We suggest that the PSS-ACC particles use themselves as the templates to form the new crystallized shells, and its mechanism is also discussed.

引用

页码：11324 / 11330

页数：7

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