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doi:10.22028/D291-29128
Title: | Mechanochemical synthesis of porous carbon at room temperature with a highly ordered sp2 microstructure |
Author(s): | Casco, Mirian Elizabeth Badaczewski, Felix M. Grätz, Sven Tolosa, Aura Presser, Volker Smarsly, Bernd M. Borchardt, Lars |
Language: | English |
Title: | Carbon : an international journal sponsored by the American Carbon Society |
Volume: | 139 |
Startpage: | 325 |
Endpage: | 333 |
Publisher/Platform: | Elsevier |
Year of Publication: | 2018 |
Publikation type: | Journal Article |
Abstract: | Carbon nanostructures with a well-developed turbostratic sp2 structure and high porosity are synthesized at room temperature inside a planetary ball mill. The obtained carbons were analyzed in-depth by means of gas adsorption, wide-angle X-ray scattering (WAXS), Raman spectroscopy, and transmission electron microscopy (TEM). Our approach involves the solvent-free reaction between calcium carbide (CaC2) and hexachlorobenzene (C6Cl6) conducted under mechanochemical conditions. After certain mechanical activation time, the exothermic nature of the reaction (−492 kcal) provokes a combustion-like event that results in innocuous salt (CaCl2) and a carbonaceous material. Carbon with a high degree of structural order in the constituting graphene and the graphene stacks, possessing almost no internal surface, can be obtained after 5 min of milling time with a mass ratio CaC2/C6Cl6 of 0.9, while carbon exhibiting a surface area as high as 915 m2/g can be obtained after 2 h of milling time with a mass ratio CaC2/C6Cl6 of 5.1. WAXS results and TEM observations reveal a mixture of amorphous carbon and non-graphitic phases. Among the last one, spherical-shaped carbons and curved nanosized strips can be easily distinguished. |
DOI of the first publication: | 10.1016/j.carbon.2018.06.068 |
Link to this record: | hdl:20.500.11880/28021 http://dx.doi.org/10.22028/D291-29128 |
ISSN: | 0008-6223 |
Date of registration: | 8-Oct-2019 |
Faculty: | NT - Naturwissenschaftlich- Technische Fakultät |
Department: | NT - Materialwissenschaft und Werkstofftechnik |
Professorship: | NT - Prof. Dr. Volker Presser |
Collections: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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