2020 Fiscal Year Annual Research Report
MOFおよびその誘導体を用いた容量性脱イオン法による淡水化処理
| Project/Area Number |
20F20338
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
山内 悠輔 国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, MANA主任研究者 (10455272)
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| Co-Investigator(Kenkyū-buntansha) |
XU XINGTAO 国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, 外国人特別研究員
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| Project Period (FY) |
2020-11-13 – 2023-03-31
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| Keywords | 多孔体 |
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| Outline of Annual Research Achievements |
Emerging of MXene-organic 2D heterostructures provide a promising solution to address the obstacles of MXenes for electrochemical applications. We successfully prepared the synthesis of covalent organic framework (COF)-on-MXene heterostructure by an inorganic-organic interfacial nanoarchitectonic strategy. The core-shell heterostructure inherits the 2D architecture (with high conductivity, and reversible ion intercalation/deintercalation ability of MXene), and the hierarchical porous structure (with large specific surface area and extraordinary redox capacitive characteristics of COFs). Owing to the distinctive structural and compositional benefits, the MXene@COF heterostructure exhibited superior capacitive deionization (CDI) performance, with a maximum salt adsorption capacity of 48.08 mg g-1. Notably this value was amongst the state of the art of all CDI electrodes, and especially higher than most MXene-based desalinators. This study highlights the importance of MXene-organic 2D heterostructures for electrochemical desalination, and also is of great significance for the design of other MXene-organic 2D heterostructures via an inorganic-organic interfacial nanoarchitectonics.
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| Current Status of Research Progress |
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
Reason
計画に書かれた組成とは異なるMOFやCOFを実験上使用することになったが，すべて順調に進んでいる。
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| Strategy for Future Research Activity |
We plan to propose the fabrication of MOF electrodes by (electro)chemically depositing PANI to interweave MOF particles that are deposited on the carbon cloth. In the prepared MOF electrode, PANI can not only be used as a conductive connector to increase the conductivity of the MOFs but also act as a polymer binder to prevent the electrode from being lost. In addition, PANI will also act as an ion exchange layer during the CDI process. As a result, it is expected that the performances of the designed MOF electrode will be greatly improved.
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