| 张 妍，吴 迪，李 晨，张大帅，张小朋，张苏敏，李天略，史载锋，林 强.球磨法制备Sc3+和Yb3+
掺杂TiO2光催化剂及
光催化活性比较[J].海南师范大学学报自科版,2019,32(2):151-156 |
| 球磨法制备Sc3+和Yb3+
掺杂TiO2光催化剂及
光催化活性比较 |
| Comparison of Photocatalytic Activities of Sc3+and Yb3+ Doped TiO2Photocatalysts Perpared by Ball Milling |
| |
| DOI：10.12051/j.issn.1674-4942.2019.02.008 |
| 中文关键词: 球磨法 稀土掺杂 二氧化钛 光催化 |
| 英文关键词: ball mill rare earth doping titanium dioxide photocatalytic |
| 基金项目:海南省重点研发项目（ZDYF2017011）；海南省重大科技计划项目（ZDKJ2016022，ZDKJ2016022-02）；海南省自
然科学基金（20156242，2017100，217101，20152033）；污染控制与资源化研究国家重点实验室开放基金（PCRRF17026） |
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| 中文摘要: |
| 为了比较稀土离子 Sc3+和 Yb3+
掺杂 TiO2 的光催化活性，通过粉末 X-射线衍射仪
（XRD）、紫外可见光谱（UV-vis）对球磨法制备的稀土离子Sc3+和Yb3+
掺杂TiO2光催化剂进行表征，
并考察300 W中压汞灯光下催化降解亚甲基蓝的活性，分析最佳掺杂量、球磨时间和不同离子掺杂
的光催化效果。结果表明，球磨4 h后，两种掺杂稀土离子的TiO2光催化剂均出现晶型畸变，带隙
能变小，对可见光响应均有明显增强。当掺杂摩尔比为2.5%时，Sc3+
/TiO2光催化剂的一级反应速
率常数为0.0932 min-1；掺杂摩尔比为3%，Yb3+
/TiO2光催化剂的一级反应速率常数为0.0436 min-1，
而纯TiO2催化剂的一级反应速率常数为0.0263 min-1。显然，掺杂后的TiO2光催化活性显著提高。 |
| 英文摘要: |
| To compare the photocatalytic activity of Sc3
/TiO2, and Yb3+
/TiO2, Rare earth Sc3 + and Yb3 + doped TiO2 photo⁃
catalyst were prepared by ball milling method, and characterized with X-ray powder diffraction (XRD) and uv-vis spectros⁃
copy (UV - vis). The methylene blue(MB) was degraded under a 300 W medium pressure mercury lamp, to investigate the
optimal doping loading, ball milling time and the effects of different rare earth on photocatalytic activity. Results showed
that after ball milling for 4 hours, crystal shape distortion and band gap decrease of TiO2 were observed which will lead to
well response to visible light
-1 with Yb3+
/TiO2, and
. The first reaction rate constant of MB photodegradation was
0.0263 min-1 with TiO2. It can be seen that the photocatalytic activity of TiO
0.0932 min-1 with Sc
2 doped with
3+
/TiO2, 0.0436 min
Sc3 and Yb3+ was remarkably improved. |
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