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| CdS/YFeO3新型磁性可见光催化剂的制备和性能研究 |
| Preparation and Photocatalytic Performance of Composite Magnetic Photocatalysts CdS/YFeO3 |
| 投稿时间：2015-01-09 修订日期：2015-01-09 |
| DOI： |
| 中文关键词: 硫化镉,铁酸钇,共沉淀法,复合磁性光催化剂 |
| 英文关键词: CdS YFeO3 co-precipitation Complex magnetic photocatalyst |
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| 摘要点击次数: 2079 |
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| 中文摘要: |
| 采用共沉淀法,以Cd(NO3)3、二甲亚砜、Y2O3、HNO3、Fe(NO3)3和柠檬酸为原料合成一系列不同掺杂比例的CdS/YFeO3复合磁性光催化剂。采用差热-热重、紫外可见漫反射、X射线衍射、紫外可见光谱等技术对光催化剂进行了表征。由差热-热重结果可知,CdS/YFeO3复合磁性光催化剂的热稳定性要比纯CdS高。由紫外可见漫反射结果可知,CdS/YFeO3复合磁性光催化剂在紫外和可见光区的吸光度都比纯CdS增大。由X射线衍射分析可知制得的催化剂即为目标催化剂。通过降解罗丹明Ｂ检测了该类复合磁性光催化剂的活性。结果表明,该类复合磁性光催化剂有良好的催化活性。CdS/YFeO3的比例对光催化活性有明显影响。通过循环和回收实验可知复合磁性光催化剂具有良好的重复性和回收性,回收率为92.08%。 |
| 英文摘要: |
| Using cadmium nitrate, dimethyl sulfoxide, antimony trioxide, nitric acid, ferric nitrate and citric acid as raw materials, a series of CdS/YFeO3 composite magnetic photocatalysts have been synthetized by co-precipitation method. They are been characterized by TG-DTA, UV-vis diffuse reflection, FL XRD and UV-vis. The TG-DTA results show that thermal stability of CdS/YFeO3 composite magnetic photocatalyst is higher than of CdS. The uv-vis diffuse reflection tests prove that the absorbance of composite magnetic photocatalysts is increase than of pure CdS. The FL and XRD show that the synthetic catalysts are the target catalyst. The activity of the composite magnetic photocatalysts has been examined by catalytic degrading rhodamine B solution under visible light irradiation, which show that the photocatalysts have good catalytic activity. The material proportion of CdS and YFeO3 significantly affects the photocatalytic activity of the photocatalysts. By the cycle and recovery experiment, the magnetic photocatalysts reveal a good repeatability and recovery, the recovery rate of catalysts is 92.08%. |
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