| 苝二酰亚胺敏化TiO_2可见光光催化降解罗丹明B |
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| 引用本文： | 赵凤伟,尚静,李佳. 苝二酰亚胺敏化TiO_2可见光光催化降解罗丹明B[J]. 北京大学学报(自然科学版), 2010, 46(2): 293-297 |
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| 作者姓名： | 赵凤伟 尚静 李佳 |
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| 作者单位： | 北京大学环境科学与工程学院,北京,100871;北京大学环境科学与工程学院,北京,100871;北京大学环境科学与工程学院,北京,100871 |
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| 基金项目： | 国家重点基础研究发展计划项目(2002CB410802);;国家自然科学基金(20407002);;环境模拟与污染控制国家重点联合实验室(北京大学)专项基金资助 |
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| 摘 要： | 采用水热法制备了苝二酰亚胺(PTCDI)敏化的光催化剂TiO2/PTCDI以及PTCDI和酞菁铜(CuPc)共敏化的可见光光催化剂(TiO2/PTCDI)-CuPc。利用XRD,TEM和UV-Vis光谱对催化剂进行表面形貌和结构表征。以罗丹明B的光催化降解为模型反应,考察敏化样品的可见光光催化性能。研究表明染料共敏化样品(TiO2/PTCDI)-CuPc的活性比TiO2和TiO2/PTCDI分别提高了223%和113%。应用能带结构理论,阐明了TiO2/PTCDI和(TiO2/PTCDI)-CuPc的光生电子转移路径和光催化降解机理。
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| 关 键 词： | 苝二酰亚胺 酞菁铜 染料敏化 可见光光催化 罗丹明B |
Visible-Light Photocatalytic Degradation of Rhodamine B Using Perylene Diimide Sensitized TiO_2 Photocatalyst |
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| ZHAO Fengwei,SHANG Jing,LI Jia. Visible-Light Photocatalytic Degradation of Rhodamine B Using Perylene Diimide Sensitized TiO_2 Photocatalyst[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2010, 46(2): 293-297 |
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| Authors: | ZHAO Fengwei SHANG Jing LI Jia |
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| Abstract: | Dye-sensitized TiO2 photocatalysts using perylene diimide(ab.TiO2/PTCDI)and co-sensitized using Perylenediimide(PTCDI)and copper phthalocyanine(CuPc)(ab.(TiO2/PTCDI)-CuPc)as sensitizing compound were prepared by hydrothermal method.The crystalline structure and surface properties of the samples were characterized by XRD,TEM and UV-Vis spectra.The photocatalytic degradation of RhB under visible light illumination was used as the model reaction to investigate the photocatalytic activities of dye-sensitized Ti... |
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| Keywords: | perylene diimide copper phthalocyanine dye sensitization visible-light photocatalysis rhodamine B |
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