A Novel Lubricant Based on Covalent Functionalized Graphene Oxide Quantum Dots

A. Wolk, M. Rosenthal, S. Neuhaus, K. Huber, K. Brassat, J. Lindner, R. Grothe, G. Grundmeier, W. Bremser, R. Wilhelm, Scientific Reports 8 (2018).

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Abstract
Dodecyl amine edge functionalized few-layer graphene oxide quantum dots were synthesized in good yields. The covalent functionalization was demonstrated with NMR and AFM-IR. The resulting structure and particle size was measured with AFM and HRTEM. The thermal stability of the compound was investigated and showed a stability of up to 220 °C. The modified graphene oxide quantum dots showed excellent solubility in various organic solvents, including ethers, methanol, toluene, n-hexane, heptane, xylene, dichloromethane and toluene. The stability of a resulting toluene solution was also proven by static light scattering measurements over several days. The excellent solubility gives the possibility of an efficient and fast spray application of the functionalized graphene oxide quantum dots to steel surfaces. Hence, the macroscopic friction behavior was investigated with a Thwing-Albert FP-2250 friction tester. A thin film of the dodecyl amine functionalized graphene oxide quantum dots on steel lowered the friction coefficient from 0.17 to 0.11 and revealed a significant corrosion inhibition effect.
Publishing Year
Journal Title
Scientific Reports
Volume
8
Issue
1
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Wolk A, Rosenthal M, Neuhaus S, et al. A Novel Lubricant Based on Covalent Functionalized Graphene Oxide Quantum Dots. Scientific Reports. 2018;8(1). doi:10.1038/s41598-018-24062-2
Wolk, A., Rosenthal, M., Neuhaus, S., Huber, K., Brassat, K., Lindner, J., … Wilhelm, R. (2018). A Novel Lubricant Based on Covalent Functionalized Graphene Oxide Quantum Dots. Scientific Reports, 8(1). https://doi.org/10.1038/s41598-018-24062-2
@article{Wolk_Rosenthal_Neuhaus_Huber_Brassat_Lindner_Grothe_Grundmeier_Bremser_Wilhelm_2018, title={A Novel Lubricant Based on Covalent Functionalized Graphene Oxide Quantum Dots}, volume={8}, DOI={10.1038/s41598-018-24062-2}, number={1}, journal={Scientific Reports}, publisher={Springer Nature}, author={Wolk, Andreas and Rosenthal, Marta and Neuhaus, Stephan and Huber, Klaus and Brassat, Katharina and Lindner, Jörg and Grothe, Richard and Grundmeier, Guido and Bremser, Wolfgang and Wilhelm, René}, year={2018} }
Wolk, Andreas, Marta Rosenthal, Stephan Neuhaus, Klaus Huber, Katharina Brassat, Jörg Lindner, Richard Grothe, Guido Grundmeier, Wolfgang Bremser, and René Wilhelm. “A Novel Lubricant Based on Covalent Functionalized Graphene Oxide Quantum Dots.” Scientific Reports 8, no. 1 (2018). https://doi.org/10.1038/s41598-018-24062-2.
A. Wolk et al., “A Novel Lubricant Based on Covalent Functionalized Graphene Oxide Quantum Dots,” Scientific Reports, vol. 8, no. 1, 2018.
Wolk, Andreas, et al. “A Novel Lubricant Based on Covalent Functionalized Graphene Oxide Quantum Dots.” Scientific Reports, vol. 8, no. 1, Springer Nature, 2018, doi:10.1038/s41598-018-24062-2.
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