Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 21, Issue 33, Pages 12352-12357Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1jm11728a
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Funding
- National Natural Science Foundation of China [50972101, 51072131]
- Specialized Research Fund for the Doctoral Program of Higher Education [20090032110014]
- Guangdong-CAS [2009B091300007]
- SRF for ROCS, SEM
- Program of Introducing Talents of Discipline to Universities, China [B06006]
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The innate character of graphene, defined as the basic unit of sp(2) carbon materials, provides opportunities for the design and construction of carbon nanostructures with tuned properties. Here, we report a novel three-dimensional graphene macroassembly with a core-shell structure starting from reduced graphene oxides (RGO) by a one-pot self-assembly process under very mild conditions. In the presence of KMnO(4), such an assembly process is initiated by low-temperature heating below 100 degrees C at atmospheric pressure and is totally free from a severe hydrothermal process. Such a core-shell structure is characterized by a porous core and layered membrane shell, and the macro-morphology and infrastructure of the macroassembly are well controllable and tunable. The macroassembly presented here and its self-assembly preparation directly from graphene nanosheets present the first example of the simultaneous formation of a coaxial hybrid infrastructure in a graphene-based nanostructured material, and such a core-shell structured macroassembly shows potential for use in energy storage and other applications.
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