A versatile ethanolic approach to metal aerogels (Pt, Pd, Au, Ag, Cu and Co)

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Maximilian Georgi - , TUD Dresden University of Technology (Author)
  • Benjamin Klemmed - , TUD Dresden University of Technology (Author)
  • Albrecht Benad - , TUD Dresden University of Technology (Author)
  • Alexander Eychmueller - , TUD Dresden University of Technology (Author)

Abstract

We present a universal one-step approach to generate metal aerogels at room and at dry ice cold temperature, abbreviated as DICE. Performing the synthesis completely in an ethanolic phase allows for the formation of pure noble (Pt, Pd, Au and Ag) and less noble metal (Cu and Co) gels in a remarkably short period of time compared to the widespread aqueous synthesis strategies. Furthermore, three-dimensional disordered, porous networks were obtained for each system with high surface areas of 860 m(2) mol(-1) for Ag up to 5470 m(2) mol(-1) for Co. Additionally, it is shown that the low reaction temperature of -70 degrees C enables the control of the gelation time without losing the structural characteristics. Moreover, with respect to industrial applications, this facile, stabilizer-free synthesis yields large amounts of materials using highly concentrated precursor solutions.

Details

Original languageEnglish
Pages (from-to)1586-1592
Number of pages7
JournalMaterials chemistry frontiers
Volume3
Issue number8
Publication statusPublished - 1 Aug 2019
Peer-reviewedYes
Externally publishedYes

External IDs

Scopus 85069672987

Keywords

Keywords

  • BIMETALLIC AEROGELS, NITROGEN SORPTION, HIGH-PERFORMANCE, NANOPARTICLES