HYDROPHILIC MIRROR COATED TIO2 MEMBRANE ON CHROME PLATE AND MANUFACTURING PROCESS THEREOF
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United States of America Patent
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Issued Date -
Jun 18, 2009
app pub date -
Jan 10, 2007
filing date -
Nov 9, 2006
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Abandoned
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Abstract
The present invention relates to a hydrophilic photocatalyst and a process of preparation thereof to obtain a titanium dioxide (TiO2) layer of an anatase structure having an excellent photocatalystic effect on a chromium substrate, and in particular to a hydrophilic photocatalyst and a process for preparation thereof including: coating a titanium dioxide (TiO2) layer of an amorphous form on the substrate while maintaining the temperature of the substrate below 200° C., coating the TiO2 layer of a pure anatase structure on the TiO2 layer of the amorphous form, and coating a silicon dioxide layer on the TiO2 layer of the pure anatase structure, wherein a super-hydrophilic property having a contact angle below 10 degrees showing a photocatalystic effect by ultraviolet irradiation appears within 1 hour after UV irradiation and a hydrophilic property having a contact angle below 20 degrees between the substrate and water drops is maintained for 18 hours.
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