Synthesis and characterization of thermal conductivity of nanofluids based on Ag decorated-CNTs/graphene hybrid materials
In this work, we present a new nanofluid based on silver nanoparticles decorated on the functionalized carbon nanotubes-graphene sheet (hybrid) materials. Briefly, carbon nanotubes and graphene sheets were first functionalized with a hydroxyl group and carboxyl group respectively. The hybrid materi...
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| Format: | Article |
| Language: | English |
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Vietnam Ministry of Science and Technology
2017-12-01
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| Series: | Vietnam Journal of Science, Technology and Engineering |
| Subjects: | |
| Online Access: | https://vietnamscience.vjst.vn/index.php/vjste/article/view/276 |
| _version_ | 1797937745087168512 |
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| author | Ngoc Anh Nguyen Van Trinh Pham Hung Thang Bui Van Chuc Nguyen Tuan Hong Nguyen Ngoc Minh Phan Ngoc Hong Phan |
| author_facet | Ngoc Anh Nguyen Van Trinh Pham Hung Thang Bui Van Chuc Nguyen Tuan Hong Nguyen Ngoc Minh Phan Ngoc Hong Phan |
| author_sort | Ngoc Anh Nguyen |
| collection | DOAJ |
| description |
In this work, we present a new nanofluid based on silver nanoparticles decorated on the functionalized carbon nanotubes-graphene sheet (hybrid) materials. Briefly, carbon nanotubes and graphene sheets were first functionalized with a hydroxyl group and carboxyl group respectively. The hybrid material was decorated with silver nanoparticles via chemical reduction method with the assistance of sodium hydroxyl. Finally, the obtained Aghybrid material was dispersed in ethylene glycol solution (EG) to form the nanofluid without any surfactant. The thermal conductivity of nanofluid was measured for different weight concentrations at different temperatures. The results showed an increase in thermal conductivity of up to 86% for 0.045% weight concentration at 55oC. This enhancement was due to the high thermal conductivity of graphene, carbon nanotubes (CNTs), and Ag nanoparticles as well as the higher surface area of Ag nanoparticles decorated on graphene and CNTs structures. The results of Transmission Electron Microscope (TEM), X-rays diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) indicated that the silver nanoparticles were formed on the surface of carbon nanotubes and graphene sheets.
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| first_indexed | 2024-04-10T18:49:05Z |
| format | Article |
| id | doaj.art-4237fd9efa0b441fb27c6e4e3630a066 |
| institution | Directory Open Access Journal |
| issn | 2525-2461 2615-9937 |
| language | English |
| last_indexed | 2024-04-10T18:49:05Z |
| publishDate | 2017-12-01 |
| publisher | Vietnam Ministry of Science and Technology |
| record_format | Article |
| series | Vietnam Journal of Science, Technology and Engineering |
| spelling | doaj.art-4237fd9efa0b441fb27c6e4e3630a0662023-02-01T08:20:48ZengVietnam Ministry of Science and TechnologyVietnam Journal of Science, Technology and Engineering2525-24612615-99372017-12-0159410.31276/VJSTE.59(4).75Synthesis and characterization of thermal conductivity of nanofluids based on Ag decorated-CNTs/graphene hybrid materialsNgoc Anh Nguyen0Van Trinh Pham1Hung Thang Bui2Van Chuc Nguyen3Tuan Hong Nguyen4Ngoc Minh Phan5Ngoc Hong Phan6Institute of Materials Science, Vietnam Academy of Science and TechnologyInstitute of Materials Science, Vietnam Academy of Science and TechnologyInstitute of Materials Science, Vietnam Academy of Science and TechnologyInstitute of Materials Science, Vietnam Academy of Science and TechnologyCenter for High Technology Development, Vietnam Academy of Science and TechnologyInstitute of Materials Science, Vietnam Academy of Science and Technology; Center for High Technology Development, Vietnam Academy of Science and Technology; Graduate University of Science and Technology, Vietnam Academy of Science and TechnologyInstitute of Materials Science, Vietnam Academy of Science and Technology; Graduate University of Science and Technology, Vietnam Academy of Science and Technology In this work, we present a new nanofluid based on silver nanoparticles decorated on the functionalized carbon nanotubes-graphene sheet (hybrid) materials. Briefly, carbon nanotubes and graphene sheets were first functionalized with a hydroxyl group and carboxyl group respectively. The hybrid material was decorated with silver nanoparticles via chemical reduction method with the assistance of sodium hydroxyl. Finally, the obtained Aghybrid material was dispersed in ethylene glycol solution (EG) to form the nanofluid without any surfactant. The thermal conductivity of nanofluid was measured for different weight concentrations at different temperatures. The results showed an increase in thermal conductivity of up to 86% for 0.045% weight concentration at 55oC. This enhancement was due to the high thermal conductivity of graphene, carbon nanotubes (CNTs), and Ag nanoparticles as well as the higher surface area of Ag nanoparticles decorated on graphene and CNTs structures. The results of Transmission Electron Microscope (TEM), X-rays diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) indicated that the silver nanoparticles were formed on the surface of carbon nanotubes and graphene sheets. https://vietnamscience.vjst.vn/index.php/vjste/article/view/276CNTsgraphenenanofluidssilver nanoparticlesthermal conductivity |
| spellingShingle | Ngoc Anh Nguyen Van Trinh Pham Hung Thang Bui Van Chuc Nguyen Tuan Hong Nguyen Ngoc Minh Phan Ngoc Hong Phan Synthesis and characterization of thermal conductivity of nanofluids based on Ag decorated-CNTs/graphene hybrid materials Vietnam Journal of Science, Technology and Engineering CNTs graphene nanofluids silver nanoparticles thermal conductivity |
| title | Synthesis and characterization of thermal conductivity of nanofluids based on Ag decorated-CNTs/graphene hybrid materials |
| title_full | Synthesis and characterization of thermal conductivity of nanofluids based on Ag decorated-CNTs/graphene hybrid materials |
| title_fullStr | Synthesis and characterization of thermal conductivity of nanofluids based on Ag decorated-CNTs/graphene hybrid materials |
| title_full_unstemmed | Synthesis and characterization of thermal conductivity of nanofluids based on Ag decorated-CNTs/graphene hybrid materials |
| title_short | Synthesis and characterization of thermal conductivity of nanofluids based on Ag decorated-CNTs/graphene hybrid materials |
| title_sort | synthesis and characterization of thermal conductivity of nanofluids based on ag decorated cnts graphene hybrid materials |
| topic | CNTs graphene nanofluids silver nanoparticles thermal conductivity |
| url | https://vietnamscience.vjst.vn/index.php/vjste/article/view/276 |
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