Experimental study on thermo-physical and rheological properties of stable and green reduced graphene oxide nanofluids: Hydrothermal assisted technique
In this study a dehydration hydrothermal technique has been used to introduce a simple, environmentally friendly and facile method for manufacturing highly dispersed reduced graphene oxide for improving the thermo-physical and rheological properties of heat transfer liquids. The hydrothermal reducti...
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| Format: | Article |
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Taylor & Francis
2017
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| _version_ | 1796947182082850816 |
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| author | Sadri, R. Zangeneh Kamali, K. Hosseini, M. Zubir, M.N.M. Kazi, S.N. Ahmadi, G. Dahari, M. Huang, N.M. Golsheikh, A.M. |
| author_facet | Sadri, R. Zangeneh Kamali, K. Hosseini, M. Zubir, M.N.M. Kazi, S.N. Ahmadi, G. Dahari, M. Huang, N.M. Golsheikh, A.M. |
| author_sort | Sadri, R. |
| collection | UM |
| description | In this study a dehydration hydrothermal technique has been used to introduce a simple, environmentally friendly and facile method for manufacturing highly dispersed reduced graphene oxide for improving the thermo-physical and rheological properties of heat transfer liquids. The hydrothermal reduction of graphene oxide was verified by various characterizations methods such as UV–visible absorption spectroscopy, Zeta potential, Raman spectroscopy, X-ray photoemission spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and transmission electron microscopy. A thorough investigation was conducted on the thermo-physical properties of reduced graphene oxide at concentrations of 0.02, 0.04, 0.06, and 0.08 wt% under different temperatures. Significant improvements in electrical and thermal conductivity were obtained by adding a small amount of hydrothermal-assisted reduced graphene oxide (h-rGO) in the suspension. The viscosity and density remained relatively unchanged with the increase of concentrations where the pH was maintained within the desirable value, despite the fact that no additive was used during the reduction process. It is noteworthy to highlight that the h-rGO aqueous suspensions have shown Newtonian behavior. Results indicated that the h-rGO could be employed as a promising additive for conventional heat transfer liquids for different thermal applications. |
| first_indexed | 2024-03-06T05:43:02Z |
| format | Article |
| id | um.eprints-17617 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:43:02Z |
| publishDate | 2017 |
| publisher | Taylor & Francis |
| record_format | dspace |
| spelling | um.eprints-176172017-08-04T02:06:10Z http://eprints.um.edu.my/17617/ Experimental study on thermo-physical and rheological properties of stable and green reduced graphene oxide nanofluids: Hydrothermal assisted technique Sadri, R. Zangeneh Kamali, K. Hosseini, M. Zubir, M.N.M. Kazi, S.N. Ahmadi, G. Dahari, M. Huang, N.M. Golsheikh, A.M. QC Physics TJ Mechanical engineering and machinery In this study a dehydration hydrothermal technique has been used to introduce a simple, environmentally friendly and facile method for manufacturing highly dispersed reduced graphene oxide for improving the thermo-physical and rheological properties of heat transfer liquids. The hydrothermal reduction of graphene oxide was verified by various characterizations methods such as UV–visible absorption spectroscopy, Zeta potential, Raman spectroscopy, X-ray photoemission spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and transmission electron microscopy. A thorough investigation was conducted on the thermo-physical properties of reduced graphene oxide at concentrations of 0.02, 0.04, 0.06, and 0.08 wt% under different temperatures. Significant improvements in electrical and thermal conductivity were obtained by adding a small amount of hydrothermal-assisted reduced graphene oxide (h-rGO) in the suspension. The viscosity and density remained relatively unchanged with the increase of concentrations where the pH was maintained within the desirable value, despite the fact that no additive was used during the reduction process. It is noteworthy to highlight that the h-rGO aqueous suspensions have shown Newtonian behavior. Results indicated that the h-rGO could be employed as a promising additive for conventional heat transfer liquids for different thermal applications. Taylor & Francis 2017 Article PeerReviewed Sadri, R. and Zangeneh Kamali, K. and Hosseini, M. and Zubir, M.N.M. and Kazi, S.N. and Ahmadi, G. and Dahari, M. and Huang, N.M. and Golsheikh, A.M. (2017) Experimental study on thermo-physical and rheological properties of stable and green reduced graphene oxide nanofluids: Hydrothermal assisted technique. Journal of Dispersion Science and Technology, 38 (9). pp. 1302-1310. ISSN 0193-2691, DOI https://doi.org/10.1080/01932691.2016.1234387 <https://doi.org/10.1080/01932691.2016.1234387>. http://dx.doi.org/10.1080/01932691.2016.1234387 doi:10.1080/01932691.2016.1234387 |
| spellingShingle | QC Physics TJ Mechanical engineering and machinery Sadri, R. Zangeneh Kamali, K. Hosseini, M. Zubir, M.N.M. Kazi, S.N. Ahmadi, G. Dahari, M. Huang, N.M. Golsheikh, A.M. Experimental study on thermo-physical and rheological properties of stable and green reduced graphene oxide nanofluids: Hydrothermal assisted technique |
| title | Experimental study on thermo-physical and rheological properties of stable and green reduced graphene oxide nanofluids: Hydrothermal assisted technique |
| title_full | Experimental study on thermo-physical and rheological properties of stable and green reduced graphene oxide nanofluids: Hydrothermal assisted technique |
| title_fullStr | Experimental study on thermo-physical and rheological properties of stable and green reduced graphene oxide nanofluids: Hydrothermal assisted technique |
| title_full_unstemmed | Experimental study on thermo-physical and rheological properties of stable and green reduced graphene oxide nanofluids: Hydrothermal assisted technique |
| title_short | Experimental study on thermo-physical and rheological properties of stable and green reduced graphene oxide nanofluids: Hydrothermal assisted technique |
| title_sort | experimental study on thermo physical and rheological properties of stable and green reduced graphene oxide nanofluids hydrothermal assisted technique |
| topic | QC Physics TJ Mechanical engineering and machinery |
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