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. 2020 Jun 12;10(6):1160.
doi: 10.3390/nano10061160.

Thermal Conductivity Performance of 2D hBN/MoS2/Hybrid Nanostructures Used on Natural and Synthetic Esters

Jaime Taha-Tijerina  1 , Hélio Ribeiro  2   3 , Karla Aviña  1 , Juan Manuel Martínez  1 , Anna Paula Godoy  2 , Josué Marciano de Oliveira Cremonezzi  2 , Milene Adriane Luciano  3 , Marcos Antônio Gimenes Benega  2 , Ricardo Jorge Espanhol Andrade  2 , Guilhermino José Macedo Fechine  2 , Ganguli Babu  4 , Samuel Castro  4
Affiliations

Thermal Conductivity Performance of 2D hBN/MoS2/Hybrid Nanostructures Used on Natural and Synthetic Esters

Jaime Taha-Tijerina et al. Nanomaterials (Basel). .

Abstract

In this paper, the thermal conductivity behavior of synthetic and natural esters reinforced with 2D nanostructures-single hexagonal boron nitride (h-BN), single molybdenum disulfide (MoS2), and hybrid h-BN/MOS2-were studied and compared to each other. As a basis for the synthesis of nanofluids, three biodegradable insulating lubricants were used: FR3TM and VG-100 were used as natural esters and MIDEL 7131 as a synthetic ester. Two-dimensional nanosheets of h-BN, MoS2, and their hybrid nanofillers (50/50 ratio percent) were incorporated into matrix lubricants without surfactants or additives. Nanofluids were prepared at 0.01, 0.05, 0.10, 0.15, and 0.25 weight percent of filler fraction. The experimental results revealed improvements in thermal conductivity in the range of 20-32% at 323 K with the addition of 2D nanostructures, and a synergistic behavior was observed for the hybrid h-BN/MoS2 nanostructures.

Keywords: 2D structures; boron nitride; esters; hybrid; molybdenum disulfide; nanolubricants; thermal conductivity.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
SEM images of h-BN (a), MoS2 (b), and h-BN/MoS2 nanosheets (c,d). AFM image of the h-BN/MoS2 mixture and its height profile (e,f).
Figure 2
Figure 2
SEM image of h-BN/MoS2 system (a) and its resulting EDS mapping of the elements B, N, Mo, and S on SiO2 grid (b–f).
Figure 3
Figure 3
(a) Raman and XRD spectra of h-BN, (b) MoS2 and the h-BN/MoS2 mixture.
Figure 4
Figure 4
Conductivity performance of Midel 7131: (a) h-BN, (b) MoS2, and (c) h-BN/MoS2 nanofluids under temperature-dependence evaluation (percentage of filler amount is mentioned).
Figure 5
Figure 5
Conductivity performance of FR3: (a) h-BN, (b) MoS2, and (c) h-BN/MoS2 nanofluids under temperature-dependence evaluation (percentage of filler amount is mentioned).
Figure 6
Figure 6
Conductivity performance of VG-100: (a) h-BN, (b) MoS2, and (c) h-BN/MoS2 nanofluids under temperature-dependence evaluation (percentage of filler amount is mentioned).
See this image and copyright information in PMC

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