Facile synthesis route for bulk production of complex fullerene-like MoS$_2$ nanostructures with enhanced tribological properties

Drnovšek, Aljaž (author), Vengust, Damjan (author), Šumandl, Patrik (author), Korbar, Domen (author), Mrzel, Aleš (author), Vilfan, Mojca (author)

Molybdenum-based nanoparticles are often used as oil additives to enhance a material’s tribological performance. Here, we present a highly efficient synthetic route for the bulk production of two types of MoS$_2$ nanostructures: multi-wall nanotubes and fullerene-like nanostructures. The presented two-step synthesis involves the transformation of ammonium heptamolybdate tetrahydrate and aniline into precursor nanowires, which are later transformed into MoS$_2$ through heating in a H$_2$S, H$_2$, and argon atmosphere to approximately 800 °C. Depending on the heating rate, we successfully grew MoS$_2$ layered compounds in various shapes and sizes. The resulting structures and compositions were characterised by X-ray powder diffraction, Raman spectroscopy, energy-dispersive X-ray spectroscopy, and electron microscopy. To assess the application potential of these MoS$_2$ compounds, they were dispersed in polyalphaolefin (PAO 6) oil. Improved tribological properties were observed compared to typically used transition metal dichalcogenides.

• Language: English
• Keywords: nanotubes, nanoparticles, synthesis, molybdenum, synthesis design
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: NTF - Faculty of Natural Sciences and Engineering; FMF - Faculty of Mathematics and Physics
• Publication status: Published
• Publication version: Version of Record
• Year: 2025
• Number of pages: 8 str.
• Numbering: Vol. 90, iss. 1, art. e202400480
• PID: 20.500.12556/RUL-166603
• UDC: 620.1/.2
• ISSN on article: 2192-6506
• DOI: 10.1002/cplu.202400480
• COBISS.SI-ID: 214232835
• Publication date in RUL: 17.01.2025

Record is a part of a journal

• Title: ChemPlusChem
• Shortened title: ChemPlusChem
• Publisher: Wiley, Chemistry Europe
• ISSN: 2192-6506
• COBISS.SI-ID: 2732539

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

• Language: Slovenian
• Keywords: nanocevke, sinteza, nanodelci, molibden