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

页码：29 / 35

页数：7

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