Multinuclear solid-state MAS/CP-MAS NMR studies of promoter (phosphate)-enhanced crystallization of siliceous MCM-41

Article Abstract:

Promoter (phosphate)-enhanced crystallization of MCM-41 is studied by multinuclear solid-state NMR spectroscopy with use of (super 13)C, (super 29)Si, and (super 31)P as probe nuclei. It is concluded that the CP dynamics are in accord with a micellar arrangement for the surfactant molecules in the as-synthesized MCM-41 materials and are consistent with the liquid crystal templating mechanism proposed earlier for the formation of M41S materials.

Nuclear magnetic resonance, Crystallization

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Conductometric study of precursor compound formation during wet-chemical synthesis of nanocrystalline hydroxyapatite

Article Abstract:

The phase evolution of calcium phosphate compounds during the wet-chemical synthesis of hydroxyapatite (HA) is studied using conductometry. The very nature of the experimental procedure makes this system of reaction unique and different from traditionally adopted experimental procedures as far as the phase transformation and kinetics are concerned.

Industrial inorganic chemicals, not elsewhere classified, Calcium Phosphates, Analysis, Electric properties, Chemical reaction, Rate of, Chemical kinetics, Calcium phosphate

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Fabrication of aligned TiO2 one-dimensional nanostructured arrays using a one-step templating solution approach

Article Abstract:

A one-step templating synthetic strategy to prepare aligned TiO2 nanotube and nanowire arrays on Si substrate from a solution at ambient temperature is reported. The different thickness of TiO2 sheaths, leading to the formation of nanotubes or nanorods can be precisely controlled by the deposition time.

Titanium compounds, Nanotubes

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