A Facile Approach for the Synthesis of Uniform Hollow Carbon Nanospheres
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- 作者：Guangda Li ; Chunli Guo ; Changhui Sun ; Zhicheng Ju ; Lishan Yang ; Liqiang Xu ; Yitai Qian
- 刊名：Journal of Physical Chemistry C
- 出版年：2008
- 出版时间：February 14, 2008
- 年：2008
- 卷：112
- 期：6
- 页码：1896 - 1900
- 全文大小：290K
- 年卷期：v.112,no.6(February 14, 2008)
- ISSN：1932-7455
文摘
Hollow carbon nanospheres (abbreviated as "HCSs") with a yield of about 90% under transmission electronmicroscope and scanning electron microscopy observations have been synthesized through a facile approachusing acetone and sodium azide as reactants at 400 
C in a sealed autoclave. These HCSs have an outerdiameter of 100-500 nm and a shell thickness of ~20 nm. Their total surface area values evaluated from theanalyzes of N2 adsorption isotherm data was 13.1 m2/g. The effects of reaction temperature, the dosage of thereagent, and the capacity of autoclave on the formation of the final products have been studied. Throughtuning the experimental parameters, olivary carbon particles or carbon rods also have been selectively prepared.In addition, when acetone was replaced by polyethylene glycol or glucose, HCSs were obtained at 400 Cwith a yield of ~90 and ~30%, respectively. On the basis of the experimental results, a possible formationmechanism of the hollow carbon nanospheres was discussed.
C in a sealed autoclave. These HCSs have an outerdiameter of 100-500 nm and a shell thickness of ~20 nm. Their total surface area values evaluated from theanalyzes of N2 adsorption isotherm data was 13.1 m2/g. The effects of reaction temperature, the dosage of thereagent, and the capacity of autoclave on the formation of the final products have been studied. Throughtuning the experimental parameters, olivary carbon particles or carbon rods also have been selectively prepared.In addition, when acetone was replaced by polyethylene glycol or glucose, HCSs were obtained at 400 Cwith a yield of ~90 and ~30%, respectively. On the basis of the experimental results, a possible formationmechanism of the hollow carbon nanospheres was discussed.