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Correction: Lu, D., et al. MoO3-Doped MnCo2O4 Microspheres Consisting of Nanosheets: An Inexpensive Nanostructured Catalyst to Hydrolyze Ammonia Borane for Hydrogen Generation. Nanomaterials 2019, 9, 21
Open AccessArticle

Simple Method to Improve Electrical Conductivity of Films Made from Single-Walled Carbon Nanotubes

Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100 Gliwice, Poland
Faculty of Mechanical Engineering, Silesian University of Technology, Konarskiego 18, 44-100 Gliwice, Poland
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(8), 1113;
Received: 15 July 2019 / Revised: 1 August 2019 / Accepted: 1 August 2019 / Published: 2 August 2019
PDF [7700 KB, uploaded 2 August 2019]


Despite the widespread use of sonication for individualization of nanomaterials, its destructive nature is rarely acknowledged. In this study, we demonstrated how exposure of the material to a hostile sound wave environment can be limited by the application of another preprocessing step. Single-walled carbon nanotubes (CNTs) were initially ground in a household coffee grinder, which enabled facile deagglomeration thereof. Such a simple approach enabled us to obtain high-quality CNT dispersion at reduced sonication time. Most importantly, electrical conductivity of free-standing films prepared from these dispersion was improved almost fourfold as compared with unground material eventually reaching 1067 ± 34 S/cm. This work presents a new approach as to how electrical properties of nanocarbon ensembles may be enhanced without the application of doping agents, the presence of which is often ephemeral. View Full-Text
Keywords: carbon nanotubes; electrical conductivity; thermal conductivity carbon nanotubes; electrical conductivity; thermal conductivity

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Kumanek, B.; Wasiak, T.; Stando, G.; Stando, P.; Łukowiec, D.; Janas, D. Simple Method to Improve Electrical Conductivity of Films Made from Single-Walled Carbon Nanotubes. Nanomaterials 2019, 9, 1113.

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