Synthesis of nanopolycrystalline mesoporous diamond from periodic mesoporous carbon: Mesoporosity increases with increasing synthesis pressure

Shah Najiba, Stephen J. Juhl, Manik Mandal, Cong Liu, Andriy Durygin, Jiuhua Chen, Yingwei Fei, Nasim Alem, Kai Landskron

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We report the catalyst-free synthesis of monolithic mesoporous nanopolycrystalline diamond from periodic mesoporous carbon at pressures between 15 and 21 GPa and a temperature of 1300 °C. We investigated the pressure-dependence of the porosity with 3-dimensional electron tomography. We have observed that surface areas increase from 56 to 90, 138 m2 g−1, and porosities increase from 10, 24, to 33% for materials produced at 15, 18, and 21 GPa, respectively. The increased porosity at higher pressure may be due to the earlier onset of the nucleation of diamond at higher pressure.

Original languageEnglish (US)
Pages (from-to)350-354
Number of pages5
JournalScripta Materialia
Volume162
DOIs
StatePublished - Mar 15 2019

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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