Hydrothermal Syntheses of Hollow Carbon Nano-materials by Ostwald Ripening

Chem. J. Chinese Universities

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Hydrothermal Syntheses of Hollow Carbon Nano-materials by Ostwald Ripening

CHEN Kai^1,2;MA Ding¹*;HUANG Wei-Xin²;BAO Xin-He¹

1. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
2. Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China

Received:2008-04-10 Revised:1900-01-01 Online:2008-08-10 Published:2008-08-10
Contact: MA Ding

Abstract

Abstract: A facile method to fabricate carbon nano-materials, with starch as a carbon precursor and ferrous salt as an additive, was reported. TEM studies indicated that the FeOOH nanorods were first generated as templates, on which carbon deposited, leading to the formation of FeOOH/carbon core-shell composite nanowires. With longer reaction time, the FeOOH cores can be dissolved spontaneously, leaving hollow carbon nanorods. The mechanism of this dissolution was attributed to Ostwald ripening. When glucose or CD was used as the precursor, hollow carbon spheres would be obtained, which could be attributed to the different surfactant effects of those precursors. This provides a very efficient method to prepare hollow carbon nanostructures via the one-pot synthesis approach. The new synthetic method has a potential to be extended to the preparation of various hollow nanostructures.

Key words: Hydrothermal synthesis, Ostwald ripening, Hollow structure, Carbon material, Starch

CLC Number:

O613

TrendMD:

CHEN Kai^1,2;MA Ding¹*;HUANG Wei-Xin²;BAO Xin-He¹. Hydrothermal Syntheses of Hollow Carbon Nano-materials by Ostwald Ripening[J]. Chem. J. Chinese Universities, doi: .

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Hydrothermal Syntheses of Hollow Carbon Nano-materials by Ostwald Ripening

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