Journal
SMALL STRUCTURES
Volume 2, Issue 3, Pages -Publisher
WILEY
DOI: 10.1002/sstr.202000101
Keywords
amorphous phases; elemental 2D materials; heterophases; metastable crystal phases; unconventional structures
Funding
- National Natural Science Foundation of China [21673161, 21905210]
- Sino-German Center for Research Promotion [1400]
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Recent studies have shown that unconventional structures of elemental 2D materials exhibit unexpected physicochemical properties and innovative applications, bringing new life to these materials. However, controllably preparing these materials is challenging due to their metastable nature. Therefore, synthetic strategies are crucial to shed light on the design of new structures for expanding functionalities and potential applications.
Elemental 2D materials have attracted a great deal of interest due to their excellent properties for various applications in catalysis, sensing, photonics, intracellular gene regulation, magnetism, superconductivity, and so on. It is broadly accepted that the physicochemical properties are highly associated with their atomic arrangements and coordination. Recent studies have demonstrated that unconventional structures of elemental 2D materials exhibit unexpected physicochemical properties and innovative applications beyond conventional structures. Those unconventional structures bring new life to elemental 2D materials and deserve special attention. However, there are considerable challenges to controllably prepare them due to their metastable characters. Herein, their synthetic strategies are focused on to shed light on the reasonable design of new structures with special atomic arrangements to open up tremendous opportunities for expanding their functionalities and potential applications. In addition, the correlations among the types of unconventional structures, the element types, and corresponding synthetic strategies are uncovered. Finally, based on the achievements in the representative studies, some prospects and potential opportunities for extending the scope of elemental 2D materials with unconventional structures and potentially distinctive applications are provided.
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