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Title: Mesoporous organosilica nanotubes containing a chelating ligand in their walls

We report the synthesis of organosilica nanotubes containing 2,2′-bipyridine chelating ligands within their walls, employing a single-micelle-templating method. These nanotubes have an average pore diameter of 7.8 nm and lengths of several hundred nanometers. UV-vis absorption spectra and scanning transmission electron microscopy observations of immobilized nanotubes with an iridium complex on the bipyridine ligands showed that the 2,2′-bipyridine groups were homogeneously distributed in the benzene-silica walls. The iridium complex, thus, immobilized on the nanotubes exhibited efficient catalytic activity for water oxidation using Ce{sup 4+}, due to the ready access of reactants to the active sites in the nanotubes.
Authors:
; ; ;  [1] ;  [2] ;  [1]
  1. Toyota Central R and D Laboratories, Inc., Nagakute, Aichi 480-1192 (Japan)
  2. (JST)/ACT-C, Nagakute, Aichi, 480-1192 (Japan)
Publication Date:
OSTI Identifier:
22303411
Resource Type:
Journal Article
Resource Relation:
Journal Name: APL Materials; Journal Volume: 2; Journal Issue: 11; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 77 NANOSCIENCE AND NANOTECHNOLOGY; ABSORPTION SPECTRA; BENZENE; BIPYRIDINES; CERIUM IONS; CHELATING AGENTS; IRIDIUM COMPLEXES; LIGANDS; NANOTUBES; SILICA; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY