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Title: Increased Thermal Conductivity in Metal-Organic Heat Carrier Nanofluids

Abstract

Metal organic heat carriers (MOHCs) are recently developed nanofluids containing metal organic framework (MOF) nanoparticles dispersed in various base fluids including refrigerants (R245Fa) and methanol. MOHCs utilize the MOF properties to improve the thermo-physical properties of base fluids. Here, we report the synthesis and characterization of MOHCs containing nanoMIL-101(Cr) and graphene oxide (GO) in an effort to improve the thermo-physical properties of various base fluids. MOHC containing MIL-101(Cr)/GO nanocomposites showed enhanced surface area, porosity, and nitrogen adsorption compared with the intrinsic nano MIL-101(Cr) and the properties depend on the amount of GO added. Powder X-ray diffraction (PXRD) confirmed the preserved crystallinity of MIL-101(Cr) in all nanocomposites with the absence of any unreacted GO. Scanning electron microscopy images confirmed the presence of near spherical MIL-101(Cr) nanoparticles in the range of 40-80 nm in diameter. MOHC nanofluids containing MIL-101(Cr)/GO in methanol exhibited significant enhancement in the thermal conductivity (by approxi-mately 50%) relative to that of the intrinsic nano MIL-101(Cr) in methanol. The thermal conductivity of base fluid (methanol) was enhanced by about 20 %. The enhancement in the thermal conductivity of nanoMIL-101(Cr) MOHCs due to graphene oxide functionalization is explained using a classical Maxwell model.

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1259939
Report Number(s):
PNNL-SA-116018
Journal ID: ISSN 2045-2322; 48731; GT0200000
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Scientific Reports; Journal Volume: 6
Country of Publication:
United States
Language:
English
Subject:
Metal Organic Frameworks; Nanofluids; Thermal conductivity; NanoMIL-101; Nanocomposites; Environmental Molecular Sciences Laboratory

Citation Formats

Nandasiri, Manjula I., Liu, Jian, McGrail, B. Peter, Jenks, Jeromy WJ, Schaef, Herbert T., Shutthanandan, V., Nie, Zimin, Martin, Paul F., and Nune, Satish K.. Increased Thermal Conductivity in Metal-Organic Heat Carrier Nanofluids. United States: N. p., 2016. Web. doi:10.1038/srep27805.
Nandasiri, Manjula I., Liu, Jian, McGrail, B. Peter, Jenks, Jeromy WJ, Schaef, Herbert T., Shutthanandan, V., Nie, Zimin, Martin, Paul F., & Nune, Satish K.. Increased Thermal Conductivity in Metal-Organic Heat Carrier Nanofluids. United States. doi:10.1038/srep27805.
Nandasiri, Manjula I., Liu, Jian, McGrail, B. Peter, Jenks, Jeromy WJ, Schaef, Herbert T., Shutthanandan, V., Nie, Zimin, Martin, Paul F., and Nune, Satish K.. Wed . "Increased Thermal Conductivity in Metal-Organic Heat Carrier Nanofluids". United States. doi:10.1038/srep27805.
@article{osti_1259939,
title = {Increased Thermal Conductivity in Metal-Organic Heat Carrier Nanofluids},
author = {Nandasiri, Manjula I. and Liu, Jian and McGrail, B. Peter and Jenks, Jeromy WJ and Schaef, Herbert T. and Shutthanandan, V. and Nie, Zimin and Martin, Paul F. and Nune, Satish K.},
abstractNote = {Metal organic heat carriers (MOHCs) are recently developed nanofluids containing metal organic framework (MOF) nanoparticles dispersed in various base fluids including refrigerants (R245Fa) and methanol. MOHCs utilize the MOF properties to improve the thermo-physical properties of base fluids. Here, we report the synthesis and characterization of MOHCs containing nanoMIL-101(Cr) and graphene oxide (GO) in an effort to improve the thermo-physical properties of various base fluids. MOHC containing MIL-101(Cr)/GO nanocomposites showed enhanced surface area, porosity, and nitrogen adsorption compared with the intrinsic nano MIL-101(Cr) and the properties depend on the amount of GO added. Powder X-ray diffraction (PXRD) confirmed the preserved crystallinity of MIL-101(Cr) in all nanocomposites with the absence of any unreacted GO. Scanning electron microscopy images confirmed the presence of near spherical MIL-101(Cr) nanoparticles in the range of 40-80 nm in diameter. MOHC nanofluids containing MIL-101(Cr)/GO in methanol exhibited significant enhancement in the thermal conductivity (by approxi-mately 50%) relative to that of the intrinsic nano MIL-101(Cr) in methanol. The thermal conductivity of base fluid (methanol) was enhanced by about 20 %. The enhancement in the thermal conductivity of nanoMIL-101(Cr) MOHCs due to graphene oxide functionalization is explained using a classical Maxwell model.},
doi = {10.1038/srep27805},
journal = {Scientific Reports},
number = ,
volume = 6,
place = {United States},
year = {Wed Jun 15 00:00:00 EDT 2016},
month = {Wed Jun 15 00:00:00 EDT 2016}
}