| 引用本文： |
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袁淑筠,孙丰强,龙培英,刘波雄.CdS光化学修饰介孔TiO2及其增强的可见光催化活性[J].广西科学,2016,23(2):167-173. [点击复制]
- YUAN Shujun,SUN Fengqiang,LONG Peiying,LIU Boxiong.Photochemical Modification with CdS and Enhanced Visible-light Photocatalytic Activity of Mesoporous TiO2[J].Guangxi Sciences,2016,23(2):167-173. [点击复制]
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| 摘要: |
| [目的]提高介孔TiO2材料的光催化活性。[方法]采用蒸发诱导自组装法(EISA),以四氯化钛和钛酸丁酯为钛源,嵌段共聚物P123(EO20PO70EO20)为模板剂,制备介孔TiO2。用光化学修饰法将CdS掺进介孔TiO2中,合成对可见光有较好响应的复合材料,并利用X射线衍射(XRD)、透射电镜(TEM)、原子吸收分光光度法(AAS)和光催化等手段对样品进行表征。[结果]XRD和TEM结果表明成功合成有序的六方介孔材料;AAS确定复合材料中Cd的含量为0.96mg/g;光催化于500 W氙灯下以2×10-5mol/L次甲基蓝(MB)为模型污染物,结果显示CdS/TiO2复合材料的可见光催化活性明显提高。[结论]光化学修饰法制备的介孔CdS/TiO2复合材料可增强其可见光催化活性。 |
| 关键词: 介孔CdS/TiO2 光化学 光催化 可见光 EISA |
| DOI：10.13656/j.cnki.gxkx.2016.02.003 |
| 投稿时间：2016-01-08修订日期：2016-02-03 |
| 基金项目:国家自然科学基金项目(批准号:21571068)资助。 |
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| Photochemical Modification with CdS and Enhanced Visible-light Photocatalytic Activity of Mesoporous TiO2 |
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YUAN Shujun, SUN Fengqiang, LONG Peiying, LIU Boxiong
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| (School of Chemistry and Environment, South China Normal University, Guangzhou, Guangdong, 510006, China) |
| Abstract: |
| [Objective] To improve the photocatalytic activity of mesoporous TiO2.[Methods] Mesoporous TiO2 was prepared by the method of evaporation-induced self-assembly (EISA), while TiCl4 and Ti (OC4H9)4 as titanium sources, and block copolymer P123 (EO20PO70EO20)as the template.Using the photochemical modification technology, composite material was prepared with good response of visible light by doping CdS to its framework.The obtained samples were characterized by X-ray diffraction (XRD), transmission electronic micrograph (TEM), atomic absorption spectrophotometer (AAS)and photocatalytic.[Results] The results of XRD and TEM proved the synthesis of ordered hexagonal mesoporous materials.AAS determined the composite material content of 0.96 mg/g Cd.In 500 W xenon lamp, 2×10-5 mol/L methylene blue (MB)as model pollutant, the photocatalytic results showed that the photocatalytic activity of the mesoporous CdS/TiO2 composite was further improved.[Conclusion] The mesoporous CdS/TiO2 composite material with enhanced visible-light photocatalytic activity can be prepared by photochemical modification technique. |
| Key words: mesoporous CdS/TiO2 photochemical photocatalytic visible light EISA |
