4.6 Article

Nanoporous Metals Based on Metallic Glasses: Synthesis, Structure and Functional Applications

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CHINESE ACAD SCIENCES, INST METAL RESEARCH
DOI: 10.1007/s40195-023-01597-6

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Nanoporous metal; Metallic glass; Dealloying; Functional applications

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Nanoporous metals, characterized by high surface area, unique pore size distribution, and enhanced catalytic activity, have emerged as a new class of functional materials. This review paper summarizes recent advances in the fabrication, structural regulation, and functional applications of nanoporous metals and their composites through the dealloying of metallic glasses. Factors affecting the nanoporous structure, preparation of immiscible nanoporous metals, and control of hierarchical nanoporous structures are discussed. The paper also provides an overview of the current situation, challenges, and potential research directions in this field.
Nanoporous metals have emerged as a new class of functional materials with unique structures and properties. Compared to conventional metals and alloys, nanoporous metals possess a high surface area, unique pore size distribution and enhanced catalytic activity, making them highly desirable for a wide range of applications, such as photonics, sensing, supercapacitors and catalysis. In this review paper, we aim to summarize recent advances in the fabrication, structural regulation and functional applications of nanoporous metals and their composites via the dealloying of metallic glasses. Particularly, we will discuss the factors that affect the nanoporous structure, including precursor composition, dealloying conditions and post-treatment methods. We will also cover topics such as the preparation of immiscible nanoporous metals and the control of hierarchical nanoporous structures. Finally, we will provide a brief overview of the current situation and discuss the current challenges and potential research directions in the field.

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