Synthesis of ordered mesoporous NiO with crystalline walls and a bimodal pore size distribution

Feng Jiao, Adrian H. Hill, Andrew Harrison, Aaron Berko, Alan V. Chadwick, Peter George Bruce

Research output: Contribution to journalArticlepeer-review

253 Citations (Scopus)

Abstract

A mesoporous solid with crystalline walls and an ordered pore structure exhibiting a bimodal pore size distribution (3.3 and 11 nm diameter pores) has been synthesized. Previous attempts to synthesize solids with large ordered mesopores by hard templating focused on the preparation of templates with thick walls (the thick walls become the pores in the target materials), something that has proved difficult to achieve. Here the large pores (11 nm) do not depend on the synthesis of a template with thick walls but instead on controlling the microporous bridging between the two sets of mesopores in the KIT-6 template. Such control determines the relative proportion of the two pore sizes. The wall thickness of the 3D cubic NiO mesopore has also been varied. Preliminary magnetic characterization indicates the freezing of uncompensated moments or blocking of superparamagnetism.

Original languageEnglish
Pages (from-to)5262-5266
Number of pages5
JournalJournal of the American Chemical Society
Volume130
Issue number15
DOIs
Publication statusPublished - 16 Apr 2008

Keywords

  • HIGH-SURFACE-AREA
  • METAL-OXIDES
  • MOLECULAR-SIEVES
  • POROUS MATERIALS
  • FACILE SYNTHESIS
  • SILICA
  • TEMPLATE
  • FRAMEWORKS
  • NANOWIRES
  • CATALYSIS

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