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Suslova EV, Osipov NI, Mashigina EV, Viktorova AS, Kupreenko SY, Isaikina OY, Savilov SV. Energy characteristics of carbon spheres. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.01.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Suslova EV, Arkhipova EA, Kalashnik AV, Ivanov AS, Savilov SV, Xia H, Lunin VV. Effect of the Functionalization of Nitrogen-Doped Carbon Nanotubes on Electrical Conductivity. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2019. [DOI: 10.1134/s0036024419100303] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Mera G, Kroll P, Ponomarev I, Chen J, Morita K, Liesegang M, Ionescu E, Navrotsky A. Metal-catalyst-free access to multiwalled carbon nanotubes/silica nanocomposites (MWCNT/SiO 2) from a single-source precursor. Dalton Trans 2019; 48:11018-11033. [PMID: 31232398 DOI: 10.1039/c9dt01783f] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The present study introduces a facile single-source precursor preparative access to bamboo-like multiwalled carbon nanotubes (MWCNTs) highly dispersed within a mesoporous silica-rich matrix. The metal-free single-source precursor was synthesized via a one-pot sol-gel process using tetramethyl orthosilicate (TMOS) and 4,4'-dihydroxybiphenyl (DHBP) and converted subsequently via pyrolysis under an argon atmosphere into MWCNT/silica nanocomposites. The in situ segregation of the highly defective bamboo-like MWCNTs was carefully investigated and has been shown to occur within the mesopores of the silica-rich matrix at relatively low temperatures and without the use of a metal catalyst. The experimental results have been supported by extensive computational simulations, which correlate the molecular architecture of the single-source precursor with the structural features of the carbon phase segregating from the silica matrix. Furthermore, the role of hydrogen in the stability of the prepared nanocomposites as well as in the high-temperature evolution and morphology of the segregated MWCNTs has been discussed based on vibrational spectroscopy, calorimetric studies and empirical potential calculations. The results obtained within the present study may allow for designing highly-defined nanocarbon-containing composites with tailored structural features and property profiles.
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Affiliation(s)
- Gabriela Mera
- Technische Universität Darmstadt, Institut für Materialwissenschaft, Otto-Berndt-Str. 3, D-64287 Darmstadt, Germany.
| | - Peter Kroll
- The University of Texas at Arlington, Department of Chemistry and Biochemistry, 700 Planetarium Place, Arlington, TX 76019, USA
| | - Ilia Ponomarev
- The University of Texas at Arlington, Department of Chemistry and Biochemistry, 700 Planetarium Place, Arlington, TX 76019, USA
| | - Jiewei Chen
- National Institute for Materials Science, Research Center for Functional Materials, Tsukuba, Ibaraki 305-0047, Japan
| | - Koji Morita
- University of California at Davis, Peter A. Rock Thermochemistry Laboratory and NEAT ORU, Davis, CA 95616, USA
| | - Moritz Liesegang
- Technische Universität Darmstadt, Institut für Materialwissenschaft, Otto-Berndt-Str. 3, D-64287 Darmstadt, Germany.
| | - Emanuel Ionescu
- Technische Universität Darmstadt, Institut für Materialwissenschaft, Otto-Berndt-Str. 3, D-64287 Darmstadt, Germany.
| | - Alexandra Navrotsky
- National Institute for Materials Science, Research Center for Functional Materials, Tsukuba, Ibaraki 305-0047, Japan
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