Journal article
Nanoporous metals from thermal decomposition of transition metal dichalcogenides
Acta materialia, v 184
01 Feb 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Nanoporous metals (np-M) have emerged as promising materials owing to their high surface area-tovolume ratio and electrical thermal conductivity. There exists a group of processing methodologies by which np-M are formed through a top-down nanostructure evolution driven by the selective removal of a sacrificial component, all of which are a variation of dealloying. Nanoporosity evolution through current dealloying methodologies, however, is governed by strict requirements including sufficient separation in "reactivity" of the participating components and a homogeneous solid solution precursor alloy. This limits the viable alloy systems that may be used and the range of np-M's that may be formed. Here, we report thermal decomposition of crystalline transition metal dichalcogenides (TMDs) as a new processing methodology for np-M formation, adding to the spectrum of dealloying protocols. We demonstrate application of this process to the formation of a broader class of np-M including W, Re, Mo, and Ta with feature sizes below 100 nm. The presented facile thermal treatment of TMDs offers a new methodology for the evolution of nanoporosity in a broad range of metals. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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Details
- Title
- Nanoporous metals from thermal decomposition of transition metal dichalcogenides
- Creators
- Swarnendu Chatterjee - Drexel UniversityAnton Anikin - Drexel UniversityDebjit Ghoshal - Rensselaer Polytechnic InstituteJames L. Hart - Drexel UniversityYawei Li - Drexel UniversitySaad Intikhab - Drexel UniversityD. A. Chareev - Kazan Federal UniversityO. S. Volkova - Lomonosov Moscow State UniversityA. N. Vasiliev - Lomonosov Moscow State UniversityMitra L. Taheri - Drexel UniversityNikhil Koratkar - Rensselaer Polytechnic InstituteGoran Karapetrov - Drexel UniversityJoshua Snyder - Drexel University
- Publication Details
- Acta materialia, v 184
- Publisher
- Elsevier
- Number of pages
- 7
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics; Chemical and Biological Engineering
- Web of Science ID
- WOS:000510988200008
- Scopus ID
- 2-s2.0-85075554617
- Other Identifier
- 991019169667004721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Metallurgy & Metallurgical Engineering