Titanium dioxide photocatalyst

  • US 6,387,844 B1
  • Filed: 03/17/1998
  • Issued: 05/14/2002
  • Est. Priority Date: 10/31/1994
  • Status: Expired due to Term
First Claim
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1. A titanium dioxide photocatalyst structure comprising:

  • a transparent glass substrate having first and second opposing surfaces, said transparent glass substrate containing alkaline ingredients therein, the first surface of said substrate receiving light from an external light source;

    a titanium dioxide film having first and second opposing surfaces, a light transmittance of said titanium dioxide film being at least 50% for light having a wavelength of 550 nm, the first surface of said titanium dioxide film being formed on the second surface of said substrate, whereby light transmitted from said external source through the first and second opposing surfaces of said substrate and through the first surface of said titanium dioxide film to the second surface thereof causes photocatalytic activity to be generated on the second surface of said titanium dioxide film; and

    a transparent precoat film interposed between the second surface of said substrate and the first surface of said titanium dioxide film.

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