Photocatalytic Degradation of Methylene Blue Solution Using N-doped Titanium Dioxide Thin Film
1. College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China
2. School of Computer Science and Engineering, Northeastern University, Shenyang 110819, China
3. Graduate Work Department, Shenyang Sport University, Shenyang 110102, China
| Abstract: | Anhydrous ethanol 100 mL was measured and a certain amount of tetrabutyl titanate and acetylacetone were added to label as the base solution A, which was mixed evenly under the stirring of a magnetic stirrer. Anhydrous ethanol 50 mL was added with a certain amount of nitric acid and water, mixed evenly and labeled as base solution B. N-doped titanium dioxide films were mixed into liquid B with ammonia as the N source in a certain proportion. The reaction was stirred by a stirrer under the condition of chamber temperature, and the pH value of the basic solution A should be continuously controlled between 3 and 4, and the basic solution B should be slowly added to the basic solution A. After magnetically stirring the prepared sol for 10 min, slowly adding a certain amount of ammonia water, and then continuing to stir for 15 min, N-doped titanium dioxide sol was obtained. The molar ratio of control acetyl acetone, nitric acid, tetrabutyl titanate, water and anhydrous ethanol is = 1:1:5:25:150. The suitable degradation conditions of the films were studied, including calcination time of 50 min, calcination temperature of 450°C, coating layer number of 4, and molar ratio of ammonia water to tetrabutyl titanate of 1:25. The prepared N-doped titanium dioxide sol was plated on the pre-treated substrate by rotating method, dried under natural conditions, calcined in Muffle furnace, kept the furnace temperature at 5°C/min to 450°C, kept constant at 450°C for 50 min, and then cooled to room temperature naturally, and the coating was completed once, and the above coating was repeated four times. N-doped titanium dioxide films prepared were used for photocatalytic degradation of methylene blue. |
| Keywords: | N-doped Titanium Dioxide; Thin Film; Photocatalytic Degradation; Methylene Blue |
| DOI: | 10.57237/j.cse.2025.01.001 |
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Received: 13 December 2024
Accepted: 9 April 2025
Published Online: 30 May 2025
Funding
| 1. | Basic Scientific Research Business Fund of Liaoning Provincial Universities (Grant No. LJ212410166081) |
| 2. | The Innovation and Entrepreneurship Training Program of Shenyang Normal University (X202410166191) |
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