Pt(II) porphyrin modified TiO2 composites as photocatalysts for efficient 4-NP degradation

Pt(II) porphyrin modified TiO2 composites as photocatalysts for efficient 4-NP degradation
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Pt(II) 卟啉修饰 TiO2 复合材料作为光催化剂有效降解 4-NP

DOI:
10.1016/j.apsusc.2012.02.069
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发表时间:
2012-05
影响因子:
6.7
通讯作者:
Wang, Chen
Wang, Chen
中科院分区:
材料科学1区
文献类型:
--
作者:
Duan, Ming-yue;Li, Jun;Li, Min;Zhang, Zeng-qi;Wang, Chen

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合成了三种 Pt(II) 卟啉 5,10,15,20-四-[2 或 3 或 4-(3-苯氧基)丙氧基]苯基卟啉]铂(II) (1–3),并进行了光谱表征。然后制备了相应的 Pt(II) 卟啉-TiO2 复合材料,并通过 FT-IR 和漫反射光谱、X 射线衍射 (XRD)、透射电子显微镜 (TEM) 和 X 射线光电子能谱 (XPS) 进行表征。通过测试氙灯照射下水溶液中4-硝基苯酚(4-NP)的光降解作用,研究了Pt(II)卟啉-TiO2催化剂的光催化活性。结果表明,Pt(II)卟啉极大地提高了裸TiO2光降解4-NP的光催化效率,并且卟啉环介观位点的外围取代基具有明显的空间取向性,导致了不同的结果。
Three Pt(II) porphyrins 5,10,15,20-tetra-[2 or 3 or 4-(3-phenoxy)propoxy]phenyl porphyrin]platinum(II) (1–3) were synthesized and characterized spectroscopically. The corresponding Pt(II) porphyrins–TiO2composites were then prepared and characterized by means of FT-IR and diffused reflectance spectra, X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The photocatalytic activity of Pt(II) porphyrins–TiO2catalyst was investigated by testing the photodegradation of 4-nitrophenol (4-NP) in aqueous solution under irradiation with Xenon lamp. The results indicated that Pt(II) porphyrins greatly enhanced the photocatalytic efficiency of bare TiO2in photodegrading the 4-NP, and the distinct space tropisms of peripheral substituents in meso-sites of porphyrin ring led to different results.
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