| Remarkable improvements in the stability and thermal conductivity of graphite/ethylene glycol nanofluids caused by a graphene oxide percolation structure | |
| Department | 清洁能源化学与材料实验室 |
Wang BG(王宝刚)1 ; Hao JC(郝京诚)2; Li HG(李洪光)1; Li HG(李洪光)
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| 2013 | |
| Source Publication | Dalton Transactions
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| ISSN | 1477-9226 |
| Volume | 42Issue:16Pages:5866-5873 |
| Abstract | Versatile efforts have been made to improve the stability of graphite/ethylene glycol (EG) nanofluids. Primitively, non-dispersible graphite nanoparticles were converted to graphite oxide nanoparticles (GONs) by acid treatment. Although GONs could be well dispersed in EG, the GONs/EG nanofluids exhibited limited stability up to less than 1 day. And then, a GO (2 wt%) percolation structure formed in EG was used to anchor and support GONs by common non-covalent interactions including hydrogen bonds, van der Waals forces and pi-pi conjugation. Transmission electron microscopy observations revealed that a GON-GO hybrid forms in the GON-GO (2 wt%)/EG nanofluids with evenly distributed GONs on the GO sheets, which accounted for the high stability of nanofluids up to at least 4 weeks obtained from stability tests, in sharp contrast to that of the GONs/EG nanofluids. In addition, due to the better dispersed state of GONs induced by the GO percolation structure, thermal conductivity (TC) tests demonstrated that the TC enhancements of the GON-GO (2 wt%)/EG nanofluids were also strengthened compared to that of GONs/EG nanofluids. Excitingly, the GONs-GO (2 wt%)/EG nanofluids presented here exhibited anomalous thermal conductivity enhancements up to 123% at 21 wt% GONs content and were highly stable, which might have potential applications in engineering field and energy systems. |
| Subject Area | 材料科学与物理化学 |
| DOI | 10.1039/c3dt32981j |
| Funding Organization | the Hundred Talents Program of Chinese Academy of Sciences;;NSFC (21033005);the National Basic Research Program of China (973 Program, 2009CB930103) |
| Indexed By | SCI |
| If | 4.097 |
| Language | 英语 |
| Funding Project | 柔性有机太阳能电池研究组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/4559 |
| Collection | 清洁能源化学与材料实验室 |
| Corresponding Author | Li HG(李洪光) |
| Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China 2.Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China |
| Recommended Citation GB/T 7714 | Wang BG,Hao JC,Li HG,et al. Remarkable improvements in the stability and thermal conductivity of graphite/ethylene glycol nanofluids caused by a graphene oxide percolation structure[J]. Dalton Transactions,2013,42(16):5866-5873. |
| APA | Wang BG,Hao JC,Li HG,&李洪光.(2013).Remarkable improvements in the stability and thermal conductivity of graphite/ethylene glycol nanofluids caused by a graphene oxide percolation structure.Dalton Transactions,42(16),5866-5873. |
| MLA | Wang BG,et al."Remarkable improvements in the stability and thermal conductivity of graphite/ethylene glycol nanofluids caused by a graphene oxide percolation structure".Dalton Transactions 42.16(2013):5866-5873. |
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| 2013Dalton Transacti（2489KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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