Journal ArticleDOI
Investigation of thermal and electrical conductivity of graphene based nanofluids
TLDR
In this paper, the synthesis of highly stable exfoliated graphene based nanofluids with water and ethylene glycol as base fluids with out any surfactant and subsequent studies on their thermal and electrical conductivities.Abstract:
We report for the first time, the synthesis of highly stable exfoliated graphene based nanofluids with water and ethylene glycol as base fluids with out any surfactant and the subsequent studies on their thermal and electrical conductivities. Graphene was synthesized by thermal exfoliation of graphene oxide at 1050 °C in Ar atmosphere. The as-synthesized graphene has been suitably functionalized and further dispersed it in the base fluids without any surfactant. Thermal and electrical conductivities of these nanofluids were measured for varying volume fractions and at different temperatures. An enhancement in thermal conductivity by about 14% has been achieved at 25 °C with deionized water (DI) as base fluid at a very low volume fraction of 0.056% which increases to about 64% at 50 °C. Electrical conductivity measurements for these nanofluids indicate an enormous enhancement at 25 °C for a volume fraction of 0.03%in DI water.read more
Citations
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Journal ArticleDOI
Investigation of thermal conductivity and rheological properties of nanofluids containing graphene nanoplatelets
Mohammad Mehrali,Emad Sadeghinezhad,Sara Tahan Latibari,Salim Newaz Kazi,Mehdi Mehrali,Mohd Nashrul Mohd Zubir,Hendrik Simon Cornelis Metselaar +6 more
TL;DR: In this article, stable homogeneous graphene nanoplatelet (GNP) nanofluids were prepared without any surfactant by high-power ultrasonic (probe) dispersion of GNPs in distilled water.
Journal ArticleDOI
A review of recent advances in thermophysical properties at the nanoscale: From solid state to colloids
Lin Qiu,Lin Qiu,Ning Zhu,Yanhui Feng,Efstathios E. Michaelides,Gaweł Żyła,Dengwei Jing,Xinxin Zhang,Pamela M. Norris,Christos N. Markides,Omid Mahian +10 more
TL;DR: In this paper, a review of recent advances in the measurement and modeling of thermophysical properties at the nanoscale (from the solid state to colloids) is presented, including thermal conductivity, dynamic viscosity, specific heat capacity, and density.
Journal ArticleDOI
A manufacturing perspective on graphene dispersions
TL;DR: In this paper, the effect of shear, solvent and chemical modification on the dispersion of graphene (including graphene oxide and reduced graphene oxide) is discussed in the context of manufacturing and commercialisation.
Journal ArticleDOI
Glucose sensing, photocatalytic and antibacterial properties of graphene–ZnO nanoparticle hybrids
TL;DR: In this article, a simple and efficient approach was developed to uniformly decorate graphene nanosheets with zinc oxide (ZnO) nanoparticles, which showed significant antibacterial activity against E. coli, gram negative bacteria.
Journal ArticleDOI
Thermal properties of nanofluids.
John Philip,P. D. Shima +1 more
TL;DR: An overview of recent advances in the field of nanofluids, especially the important material properties that affect the thermal properties of nan ofluids and novel approaches to achieve extremely high thermal conductivities are provided.
References
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Journal ArticleDOI
Superior Thermal Conductivity of Single-Layer Graphene
Alexander A. Balandin,Suchismita Ghosh,Wenzhong Bao,Irene Calizo,Desalegne Teweldebrhan,Feng Miao,Chun Ning Lau +6 more
TL;DR: The extremely high value of the thermal conductivity suggests that graphene can outperform carbon nanotubes in heat conduction and establishes graphene as an excellent material for thermal management.
Journal ArticleDOI
Processable aqueous dispersions of graphene nanosheets
TL;DR: It is reported that chemically converted graphene sheets obtained from graphite can readily form stable aqueous colloids through electrostatic stabilization, making it possible to process graphene materials using low-cost solution processing techniques, opening up enormous opportunities to use this unique carbon nanostructure for many technological applications.
Book
Physical properties of carbon nanotubes
TL;DR: In this paper, an introductory textbook for graduate students and researchers from various fields of science who wish to learn about carbon nanotubes is presented, focusing on the basic principles behind the physical properties and giving the background necessary to understand the recent developments.
Journal ArticleDOI
Raman Spectra of Graphite Oxide and Functionalized Graphene Sheets
Konstantin N. Kudin,Bulent Ozbas,Hannes C. Schniepp,Robert K. Prud'homme,Ilhan A. Aksay,Roberto Car +5 more
TL;DR: Only the alternating pattern of single-double carbon bonds within the sp2 carbon ribbons provides a satisfactory explanation for the experimentally observed blue shift of the G band of the Raman spectra relative to graphite.