稀土离子掺杂Bi_2MoO<sub>6</sub>材料的制备及光催化降解RhB

贾欣欣; 徐梦姣; 艾礼莉; 郭楠楠; 王鲁香

doi:10.13568/j.cnki.651094.651316.2023.03.08.0001

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稀土离子掺杂Bi_2MoO₆材料的制备及光催化降解RhB

更新时间：2026-01-21

- 稀土离子掺杂Bi_2MoO₆材料的制备及光催化降解RhB
- Journal of Xinjiang University (Natural Science Edition in Chinese and English) Vol. 40, Issue 5, Pages: 600-609(2023)
- 作者机构：
  
  新疆大学化学学院省部共建碳基能源资源化学与利用国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13568/j.cnki.651094.651316.2023.03.08.0001
  CLC： X703;O643.36;O644.1
- Published：2023
- 稿件说明：
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[1]贾欣欣,徐梦姣,艾礼莉,等.稀土离子掺杂Bi_2MoO_6材料的制备及光催化降解RhB[J].新疆大学学报(自然科学版)(中英文),2023,40(05):600-609.
[1]贾欣欣,徐梦姣,艾礼莉,等.稀土离子掺杂Bi_2MoO_6材料的制备及光催化降解RhB[J].新疆大学学报(自然科学版)(中英文),2023,40(05):600-609. DOI： 10.13568/j.cnki.651094.651316.2023.03.08.0001.

DOI：10.13568/j.cnki.651094.651316.2023.03.08.0001.

摘要

针对Bi_2MoO6光催化剂在光催化反应过程中电子-空穴对分离效率低的问题，以期通过稀土离子掺杂对其光催化性能进行改性．采用溶剂热法合成了系列稀土离子掺杂的Bi_2MoO6光催化剂，即为RE3+/Bi_2MoO6 (RE3+=Tb3+、Sm3+)．通过多种分析手段对RE3+/Bi_2MoO6材料的组成、结构和形貌进行了表征，并以有机染料罗丹明B(RhB)为模拟污染物，研究了该材料在可见光下的光催化活性．结果表明：稀土Tb3+、Sm3+离子掺杂改性后，样品的比表面积增大，并且对其能带结构、可见光吸收范围均有所调节，光生电子-空穴对的分离效率提高．在可见光下，样品4%Tb3+/Bi_2MoO6和4%Sm3+/Bi_2MoO6对50 m L 10 mg/L RhB的光降解率均达95%以上，较纯相Bi_2MoO6的光催化效率提升了近2倍．

Abstract

Bi_2MoO6 is modified by rare earth ions(RE3+=Tb3+

Sm3+) for solving the problem of poor electronhole pair separation efficiency of Bi_2MoO6 in the photocatalytic reaction process. A series of Tb3+and Sm3+doped Bi_2MoO6 photocatalysts were synthesized by the solvothermal method and named RE3+/Bi_2MoO6(RE3+=Tb3+

Sm3+). The composition

structure and morphology of the RE3+/Bi_2MoO6 material were characterized by various analytical means. The photocatalytic activity of the samples was investigated by using the organic dye rhodamine B(RhB) as a simulated pollutant under visible light. The results show that the doping of rare earth Tb3+and Sm3+ions increases the specific surface area of the sample

optimizes the energy band structure

expands the visible light absorption range

and improves the separation efficiency of photogenerated electron-hole pairs. The photodegradation rates of 4% Tb3+/Bi_2MoO6 and 4% Sm3+/Bi_2MoO6 samples in 50 m L 10 mg/L RhB reached more than 95% under visible light

which are nearly two times higher than that of the pure Bi_2MoO6.

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稀土离子掺杂Bi_2MoO6材料的制备及光催化降解RhB

DOI：10.13568/j.cnki.651094.651316.2023.03.08.0001

摘要

Abstract

关键词

Keywords

references

稀土离子掺杂Bi_2MoO₆材料的制备及光催化降解RhB