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xiejf

专家顾问 (文学泰斗)

气溶胶---合成与应用

最新一期的Chem. Soc. Rev.刊发了题为Three dimensional macroporous architectures and aerogels built of carbon nanotubes and/or graphene: synthesis and applications 的综述，详细的介绍了由碳纳米管或石墨烯组成的三维多孔结构/气凝胶的合成与应用方面的研究进展，碳材料因其高导电性和大比表面积在能源领域有广泛的应用，构成三维多孔结构后可以有效的提高材料的电化学活性面积，达到更好的性能。文章35页，引文211篇。

Carbon nanotubes and graphene are some of the most intensively explored carbon allotropes in materials science. This interest mainly resides in their unique properties with electrical conductivities as high as 104 S cm−1, thermal conductivities as high as 5000 W m−1 K and superior mechanical properties with elastic moduli on the order of 1 TPa for both of them. The possibility to translate the individual properties of these monodimensional (e.g. carbon nanotubes) and bidimensional (e.g. graphene) building units into two-dimensional free-standing thick and thin films has paved the way for using these allotropes in a number of applications (including photocatalysis, electrochemistry, electronics and optoelectronics, among others) as well as for the preparation of biological and chemical sensors. More recently and while recognizing the tremendous interest of these two-dimensional structures, researchers are noticing that the performance of certain devices can experience a significant enhancement by the use of three-dimensional architectures and/or aerogels because of the increase of active material per projected area. This is obviously the case as long as the nanometre-sized building units remain accessible so that the concept of hierarchical three-dimensional organization is critical to guarantee the mass transport and, as consequence, performance enhancement. Thus, this review aims to describe the different synthetic processes used for preparation of these three-dimensional architectures and/or aerogels containing either any or both allotropes, and the different fields of application in which the particular structure of these materials provided a significant enhancement in the efficacy as compared to their two-dimensional analogues or even opened the path to novel applications. The unprecedented compilation of information from both CNT- and graphene-based three-dimensional architectures and/or aerogels in a single revision is also of interest because it allows a straightforward comparison between the particular features provided by each allotrope.
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附件 1 : Threedimensionalmacroporousarchitecturesandaerogelsbuiltofcarbonnanotubesandorgraphene：synthesisandapplications.pdf

2012-11-18 13:10:44, 9.06 M