向军淮,徐志东,王军.TiO2-SiO2多功能薄膜的制备及其性能研究[J].表面技术,2023,52(11):347-354.
XIANG Jun-huai,XU Zhi-dong,WANG Jun.Preparation and Properties of TiO2-SiO2 Multifunctional Thin Films[J].Surface Technology,2023,52(11):347-354 |
| TiO2-SiO2多功能薄膜的制备及其性能研究 |
| Preparation and Properties of TiO2-SiO2 Multifunctional Thin Films |
| 投稿时间：2022-10-08 修订日期：2023-02-24 |
| DOI：10.16490/j.cnki.issn.1001-3660.2023.11.029 |
| 中文关键词: 溶胶−凝胶法 TiO2-SiO2 薄膜 防雾性能 耐久性 |
| 英文关键词:sol-gel TiO2-SiO2 thin film antifogging property durability |
| 基金项目:江西省教育厅科学技术研究项目(GJJ2201323);江西科技师范大学博士启动基金(2018BSQD019) |
| 作者 | 单位 |
| 向军淮 | 江西科技师范大学 江西省材料表面工程重点实验室，南昌 330013 |
| 徐志东 | 江西科技师范大学 江西省材料表面工程重点实验室，南昌 330013 |
| 王军 | 江西科技师范大学 江西省材料表面工程重点实验室，南昌 330013 |
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| Author | Institution |
| XIANG Jun-huai | Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China |
| XU Zhi-dong | Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China |
| WANG Jun | Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China |
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| 中文摘要: |
| 目的 改善普通玻璃的防雾性能。方法 采用溶胶−凝胶法在玻璃表面制备均匀透明的xTiO2-(1−x)SiO2 (x为1.00、0.75、0.50、0.25、0)复合薄膜。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、原子力显微镜(AFM)表征TiO2-SiO2复合材料的微观结构和表面形貌，通过紫外可见近红外分光光度计、接触角测试仪测试TiO2-SiO2复合薄膜的光学性质和润湿性，通过热水浴实验评价镀膜前后玻璃的防雾性能。结果 XRD测试结果表明，TiO2-SiO2复合材料由锐钛矿相TiO2和非晶相SiO2构成，其相结构随着TiO2含量的变化而变化。SEM和AFM结果表明，在TiO2-SiO2复合薄膜中，当SiO2的物质的量分数小于50%时，TiO2-SiO2复合薄膜表面均匀致密、粗糙度低;当SiO2的物质的量分数大于75%时，复合薄膜表面出现了孔洞和大颗粒，粗糙度增大。光学性质测试结果表明，在TiO2-SiO2复合薄膜中，当SiO2的物质的量分数大于50%时，镀膜后的玻璃在可见光范围内的平均透过率高于85%。润湿性测试结果表明，镀膜后玻璃表面的亲水性明显增强，当SiO2的物质的量分数小于50%时，TiO2-SiO2复合薄膜的接触角低于5°，表现为超亲水。防雾性能测试结果表明，在玻璃表面制备TiO2-SiO2复合薄膜后，玻璃具有良好的防雾性能。评价了0.50TiO2-0.50SiO2复合薄膜的耐久性，在室内放置60 d后，0.50TiO2-0.50SiO2复合薄膜的平均透过率在84%以上，且具有防雾性能，表明其耐久性较好。结论 在玻璃表面制备的0.50TiO2-0.50SiO2复合薄膜在可见光范围内具有高透明度和良好的防雾性能，且该薄膜的耐久性较好。 |
| 英文摘要: |
| To improve the antifogging property of normal glasses, uniform and transparent xTiO2-(1−x)SiO2 (x=1.00, 0.75, 0.50, 0.25, 0) composite thin films were prepared on glass substrates by sol-gel dip-coating method and subsequent calcination at 500 ℃ for one hour. The microstructure of TiO2-SiO2 was characterized by X-ray diffraction (XRD). The surface morphology and roughness of the films were tested with a field emission scanning electron microscope (SEM) and an atom force microscope (AFM). The optical property and wettability of TiO2-SiO2 thin films were measured with a ultraviolet-visible spectrophometer and a contact angle tester, respectively. The antifogging properties of glass with and without TiO2-SiO2 thin films were evaluated by hot water bath experiment. The XRD results showed that the crystalline phase of TiO2-SiO2 was composed by anatase TiO2 and amorphous SiO2. The phase structure of TiO2-SiO2 changed with SiO2 content. With the SiO2 content increased, the diffraction peak of TiO2-SiO2 became wider and weaker, which indicated that the degree of crystallization was weakened. There was only one broad diffraction peak around 25° while the SiO2 content was higher than 75%. This showed that 0.25TiO2-0.75SiO2 and SiO2 was amorphous phase. SEM and AFM results indicated that the surface of TiO2-SiO2 thin films with SiO2 less than 50% was uniform and dense, while the roughness of the films was small. When the content of SiO2 was higher than 75%, some large particles appeared on the surface of the composite films, which increased the surface roughness. The optical properties of TiO2-SiO2 thin films were also affected by the SiO2 content. When the content of SiO2 was higher than 50%, the average transmittance of TiO2-SiO2 films was higher than 85% in the visible wavelength range. The average transmittance of SiO2 film was up to 91.36% in visible wavelength range, which was higher than that of uncoated glass. The average transmittance of TiO2-SiO2 film was increased with the increase of SiO2 content, which might be due to the low refractive index of SiO2. The surface wettability of the films was related to the microstructure, chemical composition, surface roughness and surface hydroxyl content. All the deposited films were hydrophilic in the experiment. When the SiO2 content was less than 50%, the water contact angles of TiO2-SiO2 film were smaller than 5°. And the films were characterized as superhydrophilic. Based on the hot water bath experiment, 0.75TiO2-0.25SiO2, 0.50TiO2-0.50SiO2 and 0.25TiO2-0.75SiO2 thin films showed excellent antifogging property. The good antifogging property might benefit from the superhydrophilic of the film, which could make the small water drops spread and form water films. Among them, 0.50TiO2-0.50SiO2 contained anatase phase TiO2 and amorphous SiO2, which had good photocatalytic activity. It also had high transparent in visible wavelength range and excellent antifogging property. Therefore, the 0.50TiO2-0.50SiO2 thin film could act as a multifunctional film for glass surface modification. The durability of the 0.50TiO2- 0.50SiO2 film was evaluated by exposing the film in ambient environment for 60 days. The results showed that the average transmittance of the 0.50TiO2-0.50SiO2 composite film remained above 84%. It also had good antifogging property. These results show that the 0.50TiO2-0.50SiO2 composite thin film prepared on glass surface has high transparency, good antifogging property and durability, which has many potential application prospects, including solar cell, eyeglasses, display devices and other filed. |
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