A dense graphene monolith with poloxamer prefunctionalization enabling aqueous redispersion to obtain solubilized graphene sheets
文献类型：期刊论文
| 作者 | Ye, Chen; Zhang, Fan; Tan, Xue; Sun, Huifang; Dai, Wen; Yang, Ke; Yang, Minghui; Du, Shiyu; Dai, Dan; Yu, Jinhong |
| 刊名 | CHINESE CHEMICAL LETTERS
 |
| 出版日期 | 2020 |
| 卷号 | 31期号:9页码:2507-2511 |
| 关键词 | SUPERIOR THERMAL-CONDUCTIVITY FILMS HEAT DISPERSIONS EXFOLIATION GRAPHITE FACILE GREEN |
| DOI | 10.1016/j.cclet.2020.01.021 |
| 英文摘要 | The realization of good aqueous dispersibility of commercial graphene products composed of exfoliated graphene sheets is of significance for downstream applications. However, the tap density of commercial graphene powder is quite low (0.03-0.1 kg/m(3)), meaning that 1 kg graphene powder occupies about 10-30 m(3) in volume during transportation. And, the available content of commercial graphene dispersion/slurry in aqueous medium cannot exceed 5 wt%, although the density is high (approximate to 1050 kg/m(3)). In this work, a graphene monolith was prepared by oven-drying of graphene sheets prefunctionalized with poloxamer surfactants. Our graphene monoliths not only have a high density (1500 kg/m(3)) and high graphene content (approximate to 10 wt%), but also a full capability to be completely redispersed (approximate to 100%) in water by bath sonication to obtain solubilized graphene sheets, whose lateral size and thickness are unchanged compared to as-exfoliated ones. Moreover, a simple empirical method was proposed to predict the redispersion capability of graphene monoliths using different poloxamers by contact angle measurements. Our results provide a universal approach to make exfoliated graphene-based products with better downstream availability and lower transportation cost. (C) 2020 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved. |
| 学科主题 | Chemistry |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/20517]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Li, H 2.Lin, CT (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo 315201, Peoples R China. 3.Kong, J (corresponding author), MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA. |
| 推荐引用方式 GB/T 7714 | Ye, Chen,Zhang, Fan,Tan, Xue,et al. A dense graphene monolith with poloxamer prefunctionalization enabling aqueous redispersion to obtain solubilized graphene sheets[J]. CHINESE CHEMICAL LETTERS,2020,31(9):2507-2511. |
| APA | Ye, Chen.,Zhang, Fan.,Tan, Xue.,Sun, Huifang.,Dai, Wen.,...&Lin, Cheng-Te.(2020).A dense graphene monolith with poloxamer prefunctionalization enabling aqueous redispersion to obtain solubilized graphene sheets.CHINESE CHEMICAL LETTERS,31(9),2507-2511. |
| MLA | Ye, Chen,et al."A dense graphene monolith with poloxamer prefunctionalization enabling aqueous redispersion to obtain solubilized graphene sheets".CHINESE CHEMICAL LETTERS 31.9(2020):2507-2511. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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