铜卟啉-TiO_2复合光催化剂制备及降解4-NP的研究  

Preparation and Photocatalysis Study for 4-NP Degradation of Copper Porphyrin-TiO_2 Composites

作　　者：吕向菲[1] 李珺[1] 王晨[1] 段明玥[1] 刘惊宙[1] 刘瑞平[1] 张逢星[1] 

机构地区：[1]西北大学化学与材料科学学院,合成与天然功能分子化学教育部重点实验室,西安710069

出　　处：《高等学校化学学报》2010年第7期1391-1397,共7页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20971103)资助

摘　　要：合成了取代基数目不同的3种铜卟啉配合物,并与纯锐钛矿型TiO2作用,得到相应的铜卟啉敏化TiO2复合光催化剂.采用扫描电子显微镜(SEM)考察了铜卟啉-TiO2复合光催化剂的形貌特征,紫外-可见光谱和X射线衍射(XRD)分析结果表明,铜卟啉负载于TiO2表面,未改变TiO2的晶型.可见光降解4-硝基苯酚(4-NP)实验结果表明,复合催化剂性质稳定,可多次重复使用,卟啉环外围极性取代基数目越多,铜卟啉光敏化效果越好.Based on the three synthesized porphyrin derivatives and their corresponding metallic complexes, the photocatalytic activity of anatase TiO2 samples impregnated with CuP were investigated by carrying out the photodegradation of 4-nitrophenol（ 4-NP） in aqueous suspension and under visible light. The photocatalysts were characterized by SEM,XRD and UV-Vis. The photocatalysts show good stability under irradiation conditions and they continued to maintain good photocatlytic activity also after several cycles. With increasing the substituents,the photocatalytic efficiency of CuP-TiO2 photocatalyst improved under visible light.

关 键 词：铜卟啉 光敏化TiO2 光催化剂 

分 类 号：O643[理学—物理化学]