| 摘要 |
PURPOSE:To obtain a photocatalyst for treatment of a harmful substance having high efficiency and easy to handle by dipping a woven fabric of glass fibers in a soln. prepd. by dissolving a precursor of titanium oxide and an org. resin, drying the fabric and forming an Si-O-Ti bonded layer by firing between each of the glass fibers and the resulting titanium oxide. CONSTITUTION:A woven fabric of glass fibers A is dipped in a soln. prepd. by dissolving a precursor convertible into titanium oxide by heating and an org. resin in compatible solvents, the fabric is dried and an Si-O-Ti bonded layer C is formed by firing between each of the glass fibers A and the resulting thin titanium oxide film B coating the fabric to obtain the objective photocatalyst for treatment of a harmful substance. In this case, a dehydration condensation reaction proceeds and the Si-O-Ti bonded layer C is formed at a relatively low temp. because only the surface of the fabric is locally heated by the heat of combustion generated by an oxidation degradation reaction of the org. resin and that of org. residues constituting the precursor. By the presence of the layer C, a decomposition reaction of a harmful substance is accelerated. |
