Precise control of the interlayer spacing between graphene sheets by hydrated cations
文献类型：期刊论文
| 作者 | Yang, YZ; Mu, LH; Chen, L; Shi, GS; Fang, HP |
| 刊名 | PHYSICAL CHEMISTRY CHEMICAL PHYSICS
 |
| 出版日期 | 2019 |
| 卷号 | 21期号:14页码:7623—7629 |
| 关键词 | WATER DESALINATION INTERCALATION OXIDE GRAPHITE SUPERCONDUCTIVITY MEMBRANES POTASSIUM |
| ISSN号 | 1463-9076 |
| DOI | 10.1039/c8cp07837h |
| 文献子类 | 期刊论文 |
| 英文摘要 | Recently, we have demonstrated that highly efficient ion rejection by graphene oxide membranes can be facilely achieved using hydrated cations to control the interlayer spacing in GO membranes. By using density functional theory calculations, we have shown that different hydrated cations can also precisely control the interlayer spacings between graphene sheets, which are smaller than graphene oxide sheets; this indicates ion sieving. The interlayer distances are 9.35, 8.96 and 8.82 angstrom for hydrated Li+, Na+ and K+, respectively. Since the radii of the hydrated Na+ and Li+ ions are larger than that of hydrated K+, graphene membranes controlled by the hydrated K+ ion can exclude K+ and the other two cations with larger hydrated volumes. Further analysis of charge transfer and orbit analysis showed that this type of control by the hydrated cations is attributed to the strong hydrated cation- interactions; moreover, when soaked in a salt solution, graphene membranes adsorb hydrated Na+ and Li+ and form intercalation compounds. However, it is hard to find K-doped intercalation compounds in the inner part of graphene. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31764]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Appl Phys, Div Interfacial Water, Shanghai 201800, Peoples R China; 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 4.Zhejiang A&F Univ, Zhejiang Prov Key Lab Chem Utilizat Forestry Biom, Linan 311300, Zhejiang, Peoples R China; 5.Shanghai Univ, Shanghai Appl Radiat Inst, Shanghai 200444, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, YZ,Mu, LH,Chen, L,et al. Precise control of the interlayer spacing between graphene sheets by hydrated cations[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2019,21(14):7623—7629. |
| APA | Yang, YZ,Mu, LH,Chen, L,Shi, GS,&Fang, HP.(2019).Precise control of the interlayer spacing between graphene sheets by hydrated cations.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,21(14),7623—7629. |
| MLA | Yang, YZ,et al."Precise control of the interlayer spacing between graphene sheets by hydrated cations".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 21.14(2019):7623—7629. |
入库方式： OAI收割
来源：上海应用物理研究所
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