Method for Preparing Molybdenum Doped Titanium Dioxide Thin Film by Sol-Gel

A method for preparing molybdenum doped titanium dioxide thin film by sol-gel, characterized in that the method comprises following steps:

• (1) preparing a mixed solution by mixing tetrabutyl titanate, acetylacetone and anhydrous ethanol, stirring and mixing the mixed solution evenly;
• (2) adding a thickener into the mixed solution obtained in step (1), stirring to complete dissolution under 20-50° C. and obtaining a solution I;
• (3) mixing ammonium molybdate solution, deionized water and anhydrous ethanol, adjusting pH value to 4-6 by nitric acid, stirring sufficiently and mixing evenly, and obtaining a solution II;
• (4) dropwise adding the solution II obtained in step (3) into the solution I obtained in step (2) under vigorous stirring to hydrolyze the tetrabutyl titanate completely, after the completion, continually stirring for 2 hours and obtaining a faint yellow, uniform and transparent titanium dioxide sol;
• (5) immersing a glass ball into the titanium dioxide sol obtained in step (4) completely, loading the titanium dioxide sol on the glass ball surface by dipping coating method, oven drying in an air dry oven, immersing into the titanium dioxide sol again, oven drying again, repeating such for several times, taking multiple dipped and dried titanium dioxide sol, placing into a vacuum drying oven for completely drying, and evaporating a solvent completely;
• (6) placing the titanium dioxide sot obtained in step (5) in a muffle furnace and carrying out high-temperature calcination, taking out after cooling completely, and obtaining molybdenum doped titanium dioxide thin film.