Journal
APPLIED SURFACE SCIENCE
Volume 258, Issue 2, Pages 940-945Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2011.09.032
Keywords
Porphyrins; Metalloporphyrins; Titanium dioxide; Photodegradation; 4-Nitrophenol
Categories
Funding
- National Nature Science Foundation of China [20971103]
- International Cooperation Project of Shaanxi Province [2008KW-33]
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A new mono-functionalized porphyrin derivative, 5-mono-[4-(2-(4-hydroxy)-phenoxy)ethoxy]-10,15,20- triphenylporphyrin (3) and its Cu(II) (3a), Zn(II) (3b) and Ni(II) (3c) metalloporphyrins were synthesized and characterized by using various spectroscopic techniques. The corresponding 3a, 3b, 3c-TiO2 photocatalysts were then prepared and characterized by means of FT-IR and diffused reflectance spectra, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The photocatalytic activities of 3a, 3b, 3c-TiO2 were investigated by testing the photodegradation of 4-nitrophenol (4-NP) in aqueous solution under the halogen lamp irradiation. The results indicated that all the 3a, 3b, 3c enhanced the photocatalytic efficiency of bare TiO2 in photodegrading the 4-NP, and 3a-TiO2 exhibited the highest photocatalytic activity. The result is considered a combined action of potential match of 3a with TiO2 CB and effective impregnated of 3a onto the surface of TiO2. (C) 2011 Elsevier B. V. All rights reserved.
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