Rationally Engineered Heterometallic Metalladithiolene Coordination Nanosheets with Defined Atomic Arrangements
Miyu Ito1, Naoya Fukui2, Kenji Takada2
1Graduate School of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan.
Small (Weinheim an Der Bergstrasse, Germany)
|May 5, 2025
Summary
Researchers developed a new method to selectively synthesize coordination nanosheets, enhancing their use as catalysts. This advancement in 2D polymer synthesis opens doors for novel materials with tunable properties.
Area of Science:
- Materials Science
- Nanotechnology
- Coordination Chemistry
Background:
- Coordination nanosheets are 2D polymers with tunable electronic and chemical properties.
- Current synthesis methods for specific structures like porous NiDT and nonporous NiBHT are not well-developed.
- These materials show potential for applications such as hydrogen evolution catalysis.
Purpose of the Study:
- To develop a rational and selective synthesis method for coordination nanosheets.
- To explore the catalytic activity of synthesized nanosheets for hydrogen evolution.
- To create heterometallic coordination nanosheets with controlled structures and properties.
Main Methods:
- Selective synthesis of NiDT and NiBHT colloidal solutions via single-phase reaction by adjusting the BHT to metal ion ratio.
- Coating colloidal solutions on electrodes for hydrogen evolution catalysis.
- Synthesis of heterometallic nanosheets (NiCu2BHT, NiZn2BHT) by pore filling and transmetallation.
Main Results:
- Achieved selective synthesis of NiDT and NiBHT colloidal solutions.
- Demonstrated NiDT as a superior hydrogen evolution catalyst compared to NiBHT.
- Successfully synthesized CuBHT, ZnBHT, NiCu2BHT, and NiZn2BHT, including a new material NiZn2BHT.
- Observed significant changes in electrical conductivity upon introduction of a second metal.
- Developed a transmetallation method to convert NiBHT to NiCu2BHT.
Conclusions:
- A facile single-phase method enables selective synthesis of coordination nanosheets.
- Synthesized nanosheets show promise as efficient hydrogen evolution catalysts.
- The development of heterometallic nanosheets and inks offers new avenues for materials design and application.
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