铥、镱共掺可见光响应型纳米TiO2光催化剂的制备及性能表征

袁云松; 吴从越; 李雨芬; 刘珺婉; 徐璇

doi:10.3788/fgxb20163711.1310

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铥、镱共掺可见光响应型纳米TiO₂光催化剂的制备及性能表征

材料合成及性能 | 更新时间：2020-08-12

- 铥、镱共掺可见光响应型纳米TiO₂光催化剂的制备及性能表征
- Preparation and Characterization of TiO₂: Tm,Yb Visible Light Responsive Nano-photocatalyst
- 发光学报 2016年37卷第11期页码：1310-1315
- 作者机构：
  
  重庆大学三峡库区生态环境教育部重点实验室重庆,400045
- 作者简介：
- 基金信息：
  
  国家级大学生创新训练项目（201510611041）资助()
- DOI：10.3788/fgxb20163711.1310
  中图分类号： TP394.1;O482.31
- 纸质出版日期：2016-11-5，
  
  收稿日期：2016-8-16，
  
  修回日期：2016-9-21，
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袁云松, 吴从越, 李雨芬等. 铥、镱共掺可见光响应型纳米TiO2光催化剂的制备及性能表征[J]. 发光学报, 2016,37(11): 1310-1315

YUAN Yun-song, WU Cong-yue, LI Yu-fen etc. Preparation and Characterization of TiO2: Tm,Yb Visible Light Responsive Nano-photocatalyst[J]. Chinese Journal of Luminescence, 2016,37(11): 1310-1315
袁云松, 吴从越, 李雨芬等. 铥、镱共掺可见光响应型纳米TiO2光催化剂的制备及性能表征[J]. 发光学报, 2016,37(11): 1310-1315 DOI： 10.3788/fgxb20163711.1310.

YUAN Yun-song, WU Cong-yue, LI Yu-fen etc. Preparation and Characterization of TiO2: Tm,Yb Visible Light Responsive Nano-photocatalyst[J]. Chinese Journal of Luminescence, 2016,37(11): 1310-1315 DOI： 10.3788/fgxb20163711.1310.

摘要

为了解决现有光催化剂对太阳光响应性能不佳且可见光响应型光催化剂制备条件苛刻等问题，研制了以TiO

同时作为上转换材料基质和半导体光催化剂的光催化材料，并对不同

（Yb

）∶

（Tm

）掺杂下的光催化材料的上转换发光性能进行了研究。首先，设置一系列的

（Yb

）∶

（Tm

）比值，采用溶胶-凝胶法制备相应光催化材料。然后，对材料进行性能表征及降解实验，以亚甲基蓝为目标污染物，测试材料的实际催化降解效果。最后，通过分析材料的发光性能及降解性能，确定最优的

（Yb

）∶

（Tm

）比值。实验结果表明：当

（Yb

）∶

（Tm

）=4时，材料的发光性能最好，上转换现象最明显，可见光照射条件下的光催化降解效率最高，目标污染物降解率可达72.87%。所制备材料集上转换材料及光催化剂为一体，简化了制备程序，提高了能量利用效率。研制出的TiO

∶1%Tm，4%Yb光催化材料最为理想，光谱响应范围向可见光区拓展，降解效果良好，能够实现对太阳光能量的高效利用。

Abstract

Facing on the problem that the existing photocatalysts' sunlight response performance is poor

and the fact that the existing photocatalysts with visible light photoresponse are poorly functioned and tough to prepare

the upconversion luminescence materials with the exact matrix of TiO

are prepared

and the photoluminescence capacity of materials doped with different ratio of

(Yb

(Tm

) is studied. Firstly

the materials doped with the designed range of

(Yb

(Tm

) ratio were prepared by the sol-gel method. Secondly

the performance of prepared photocatalysts was examined by UV-Vis

3D-EEM and experiments of photocatalytic degradation. Lastly

based on the analysis of the data

an optimum ratio of

(Yb

(Tm

) was determined. The results show that the materials with

(Yb

(Tm

) ratio of 4 give the most obvious upconversion luminescence phenomenon and the best degradation effectiveness

with the target organic pollutant removed by 33.33% within 4 h

49.99% degraded within 6 h and 72.87% degraded within 12 h. It is proved that allowing TiO

to function as a photocatalyst as well as to assist in the photoluminescence procedure at the same time saves both complicated preparation procedures and over-wasted energy. In addition

the ideal photocatalyst TiO

: 1%Tm

4%Yb achieves ultraviolet upconversion under visible light and thereby enhances the photocatalyst's sunlight response ability.

关键词

TiO2光催化可见光上转换n(Yb3+): n(Tm3+)

Keywords

TiO2photocatalysisvisible lightupconversionn(Yb3+): n(Tm3+)

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