Efficient visible photodegradation of 4-nitrophenol in the presence of H2O2 by using a new copper(II) porphyrin-TiO2 photocatalyst

被引：42
|
作者：
Yao, Gui-ping [1 ]
Li, Jun [1 ]
Luo, Yun [1 ]
Sun, Wan-jun [1 ]
机构：
[1] NW Univ Xian, Key Lab Synthet & Nat Funct Mol Chem, Minist Educ, Coll Chem & Mat Sci, Xian 710069, Shaanxi, Peoples R China
来源：
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2012年 / 361卷
关键词：
Photocatalysis; Cu(II) porphyrin; TiO2; Photogradation; 4-Nitrophenol; Hydrogen peroxide; TIO2; NANOPARTICLES; DEGRADATION; SUSPENSION; MECHANISM; SURFACES;
D O I：
10.1016/j.molcata.2012.04.013
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A new imidazolyl-linked pophyrin, 5-[4-(2-imidazolyl)ethoxyl]phenyl-10,15,20-triphenylporphyrin and its copper(II) porphyrin were synthesized and characterized spectroscopically. The CuPp-TiO2 photocatalyst was also prepared and characterized by means of high-resolution transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-vis spectra and FT-IR spectra. The photocatalytic activity was investigated by photodegradation of 4-nitrophenol (4-NP) in aqueous solution with a small amount of H2O2 under visible light irradiation (lambda > 400 nm). The results indicated that H2O2 can enhance greatly the visible photocatalytic activity of CuPp-TiO2 photocatalyst. Additionally, a possible mechanism of the photocatalytic degradation was proposed. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：29 / 35
页数：7
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