Hierarchical nanoporous metals as a path toward the ultimate three-dimensional functionality

Takeshi Fujita

Research output: Contribution to journalReview articlepeer-review

27 Citations (Scopus)

Abstract

Nanoporous metals prepared via dealloying or selective leaching of solid solution alloys and compounds represent an emerging class of materials. They possess a three-dimensional (3D) structure of randomly interpenetrating ligaments/nanopores with sizes between 5 nm and several tens of micrometers, which can be tuned by varying their preparation conditions (such as dealloying time and temperature) or additional thermal coarsening. As compared to other nanostructured materials, nanoporous metals have many advantages, including their bicontinuous structure, tunable pore sizes, bulk form, good electrical conductivity, and high structural stability. Therefore, nanoporous metals represent ideal 3D materials with versatile functionality, which can be utilized in various fields. In this review, we describe the recent applications of nanoporous metals in molecular detection, catalysis, 3D graphene synthesis, hierarchical pore formation, and additive manufacturing (3D printing) together with our own achievements in these areas. Finally, we discuss possible ways of realizing the ultimate 3D functionality beyond the scope of nanoporous metals.

Original languageEnglish
Pages (from-to)724-740
Number of pages17
JournalScience and Technology of Advanced Materials
Volume18
Issue number1
DOIs
Publication statusPublished - 2017 Dec 31

Keywords

  • 3D printing
  • Nanoporous metal
  • catalysis
  • dealloying
  • electrode
  • molecular detection
  • porous graphene

ASJC Scopus subject areas

  • Materials Science(all)

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