两步机械球磨法制备M/TiO<sub>2</sub>复合薄膜及光催化性能研究

刘改华; 查五生; 陈秀丽; 张桂银

doi:10.19591/j.cnki.cn11-1974/tf.2019070004

两步机械球磨法制备M/TiO₂复合薄膜及光催化性能研究

doi: 10.19591/j.cnki.cn11-1974/tf.2019070004

刘改华¹⁾,
查五生^2), ,,
陈秀丽²⁾,
张桂银²⁾

1).
济南市产品质量检验院，济南 250101
2).
西华大学材料科学与工程学院，成都 610039

基金项目:

四川省科技计划资助项目 2014GZ0088

四川省教育厅自然重大培育项目 16201452

详细信息

通讯作者:
查五生, E-mail: 1434758301@qq.com

中图分类号: TG146.2+3
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出版历程
- 收稿日期: 2019-07-14
- 刊出日期: 2021-02-26

Study on preparation and photocatalytic properties of M/TiO₂ composite film by two-step mechanical ball milling

LIU Gai-hua¹⁾,
ZHA Wu-sheng^{2)
, ,},
CHEN Xiu-li²⁾,
ZHANG Gui-yin²⁾

1).
Jinan Institute for Product Quality Inspection, Jinan 250101, China
2).
School of Materials Science and Engineering, Xihua University, Chengdu 610039, China

More Information

Corresponding author: ZHA Wu-sheng, E-mail: 1434758301@qq.com

摘要

摘要:
采用两步机械球磨法制备了M/TiO₂（M = Al、Sn、Zn、Ti）双层复合薄膜，利用光学显微镜和X射线衍射仪分析了涂层的微观结构和相组成，测定了薄膜的光催化性能，研究了过渡层材质以及球磨时间对复合薄膜光催化性能的影响。研究表明，TiO₂粉体在球磨过程中的晶体结构未发生显著变化，保持了良好的光催化活性。金属过渡层Al、Sn以及Zn将显著削弱复合薄膜的光催化活性，Ti是复合薄膜的理想金属过渡层，制备的Ti/TiO₂复合薄膜具有优异的光催化性能。随着第二步球磨时间的延长，Ti/TiO₂复合薄膜的光催化性能逐渐降低，这是由于第二层薄膜表面TiO₂含量降低的原因所致。
- 机械球磨 /
- 光催化性能 /
- 球磨时间 /
- 复合薄膜
Abstract:
The composite films of M/TiO₂ (M = Al, Sn, Zn, Ti) were prepared by the two-step mechanical ball milling. The microstructure and phase composition of the composite coating were analyzed by the optical microscopy (OM) and X-ray diffraction (XRD), the photocatalytic properties of the composite films were determined, and the effects of the transition layer materials and milling time on the photocatalytic properties of the composite films were investigated. The results show that, the crystal structure of the TiO₂ powders does not change significantly during the ball milling process, and the TiO₂ powders still maintain the good photocatalytic activity. The metal transition layers of Al, Sn, and Zn will significantly weaken the photocatalytic activity of the composite films, while Ti is an ideal metal transition layer for the composite film, and the prepared Ti/TiO₂ composite films have the excellent photocatalytic properties. With the prolongation of the second step milling time, the photocatalytic properties of the Ti/TiO₂ composite films are gradually reduced, which is caused by the decrease of the TiO₂ content on the surface of the second film.
- mechanical ball milling /
- photocatalytic properties /
- milling time /
- composite film

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图 1 不同金属过渡层横截面形貌：（a）Al；（b）Sn；（c）Zn；（d）Ti

Figure 1. Cross-section images of the different metal transition layers: (a) Al; (b) Sn; (c) Zn; (d) Ti

下载: 全尺寸图片幻灯片

图 2 不同球磨时间下Sn/TiO₂复合薄膜横截面形貌：（a）2 h；（b）4 h；（c）6 h

Figure 2. Cross-section images of the Sn/TiO₂ composite films with different milling times: (a) 2h; (b) 4 h; (c) 6 h

下载: 全尺寸图片幻灯片

图 3 不同复合薄膜的横截面形貌：（a）Al/TiO₂；（b）Sn/TiO₂；（c）Zn/TiO₂；（d）Ti/TiO₂

Figure 3. Cross-section images of the different composite films: (a) Al/TiO₂; (b) Sn/TiO₂; (c) Zn/TiO₂; (d) Ti/TiO₂

下载: 全尺寸图片幻灯片

图 4 不同复合薄膜对不同溶液的降解率

Figure 4. Degradation rate of the different composite films on the different solutions

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图 5 TiO₂粉末在不同球磨时间下的X射线衍射图谱

Figure 5. X-ray diffraction patterns of the TiO₂ powders at different milling time

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图 6 不同球磨时间制备的Ti/TiO₂复合薄膜对亚甲基蓝溶液的降解曲线

Figure 6. Degradation curves of the Ti/TiO₂ composite films with the different milling times in the methylene blue solution

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