金属卟啉/异烟酸/二氧化钛复合光催化剂制备及其光催化性能研究

Preparation and Photoactivity of Metalloporphyrin/Pycarbox/TiO_2 Photocatalysts

合成了四苯基卟啉(H2TPP)及铜卟啉(CuTPP)和锌卟啉(ZnTPP),获得了配合物[Zn(TPP)(DMF)]的晶体。制备了金属卟啉、异烟酸共修饰的二氧化钛复合光催化剂:金属卟啉/异烟酸/二氧化钛,红外光谱和X-射线衍射(XRD)分析结果表明金属卟啉和异烟酸负载于TiO2表面,未改变TiO2的晶型。在光催化降解水中污染物4-硝基苯酚(4-NP)时显示了好的催化效果。

Tetraphenyl porphyrin （H2TPP） and its corresponding copper and zinc complexes, copper tetraphenyl porphyrin （CuTPP） and zinc tetraphenyl porphyrin （ZnTPP） were synthesized. Moreover, the single crystal of [Zn（TPP）（DMF）] was obtained. Metalloporphyrin/Pycarbox/TiO2 photocatalysts were prepared by impregnating TiO2 with CuTPP （or ZnTPP） and Pycarbox in the mixture of dichloromethane and ethanol. The photocatalytic activity of these composites have been investigated by accomplishing the photodegradation of 4-nitrophenol in aqueous solution under UV-Visible light. The photocatalysts were characterized by FTIR spectra and X-ray diffraction（XRD）. The result indicated that metalloporphyrins and Pycarbox were successfully loaded and interacted with the surface of TiO2, the photocatalytic efficiency of these composites have been improved. CCDC： 872030.