학술논문
Two novel polytitanium precursors containing linear Ti-(OH)-Ti chains applied for the preparation of titanium dioxide fibers.
Document Type
Article
Author
Source
Subject
*CHEMICAL precursors
*HYDROXIDES
*TITANIUM dioxide
*CHEMICAL synthesis
*POLYCONDENSATION
*SOL-gel processes
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Language
ISSN
0947-8396
Abstract
Two novel precursors, polyacetylacetonatotitanium (PAT) and polyacetictitanium (PET), which can be applied for the preparation of TiO fibers, were synthesized by metathetical polycondensations. The fibers of PAT and PET were prepared by sol-gel dry-spinning method. The high-quality and plentiful precursor fibers were easily collected with the diameter of 2-20 μm. The structures of the precursors were characterized and analyzed by elemental analyses, X-ray fluorescence spectrometry, infrared spectral analysis, nuclear magnetic resonance analysis, and thermal analyses. Both PAT and PET are the linear polymers containing Ti(OH)Ti chains. The coordination number of titanium atom is 8. And each titanium atom is coordinated with six -OHs and one CH-CO=C-CO-CH (for PAT) or CH-COO (for PET). The precursor fibers can be used to prepare TiO fibers at 500 °C. The TiO fibers exhibit fine photocatalytic degradation activities. [ABSTRACT FROM AUTHOR]