Phthalocyanine-modified titania - catalyst for photooxidation of phenols by irradiation with visible light

被引：117

作者：

Iliev, V ^{[1
]}

机构：

[1] Bulgarian Acad Sci, Inst Catalysis, BU-1113 Sofia, Bulgaria

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2002年 / 151卷 / 1-3期

关键词：

photocatalytic detoxification; phthalocyanine semiconductors; TiO2; particles; phenol; visible light;

D O I：

10.1016/S1010-6030(02)00177-6

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：

The photooxidation of phenol, catalyzed by superficially modified with phthalocyanine complex (Pc) oxide supports (Al2O3 or TiO2), has been studied upon irradiation with visible light. The rate of substrate photooxidation, catalyzed by Pc/TiO2, is much higher than that over the sample obtained by anchoring the Pc complex on Al2O3. The degree of mineralization of phenol during photocatalysis in the presence of Pc/TiO2 is also higher. The high photocatalytic activity of the sample is explained by the realization of an electron transfer from the conduction band of the excited phthalocyanine semiconductor particles to the conduction band of TiO2 support. The increase of the quantum yield of the redox process comes as a result of the additional formation of superoxide radicals on the TiO2 conduction band. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：195 / 199

页数：5

共 35 条

[1] [Anonymous], 1989, PHOTOCATALYSIS FUNDA
[2] Chatterjee D., 2001, CATAL COMMUN, V2, P1, DOI DOI 10.1016/S1566-7367(00)00011-X
[3] Photocatalytic behavior of mixed WO3/WS2 powders
Di Paola, A
Palmisano, L
Augugliaro, V
[J]. CATALYSIS TODAY, 2000, 58 (2-3) : 141 - 149
[4] Photocatalytic oxidation of organic pollutants in water
Dominguez, C
Garcia, J
Pedraz, MA
Torres, A
Galan, MA
[J]. CATALYSIS TODAY, 1998, 40 (01) : 85 - 101
[5] Engel M. K., 1996, KAWAMURA RIKAGAKU KE, V8, P11
[6] SPECTRAL SENSITIZATION OF THE HETEROGENEOUS PHOTOCATALYTIC OXIDATION OF HYDROQUINONE IN AQUEOUS-SOLUTIONS AT PHTHALOCYANINE-COATED TIO2 POWDERS
FAN, FRF
BARD, AJ
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1979, 101 (20) : 6139 - 6140
[7] Fijushima A., 2000, J PHOTOCH PHOTOBIO C, V1, P1, DOI DOI 10.1016/S1389-5567(00)00002-2
[8] Photo-oxidation of phenol and monochlorophenols in oxygen-saturated aqueous solutions by different photosensitizers
Gerdes, R
Wohrle, D
Spiller, W
Schneider, G
Schnurpfeil, G
Schulz-Ekloff, G
[J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1997, 111 (1-3) : 65 - 74
[9] GRAETZEL M, 1983, ENERGY RESOURCES PHT
[10] Sensitization of TiO2 with phthalocyanines .1. Photo-oxidations using hydroxoaluminium tricarboxymonoamidephthalocyanine adsorbed on TiO2
Hodak, J
Quinteros, C
Litter, MI
Roman, ES
[J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1996, 92 (24): : 5081 - 5088

← 1 2 3 4 →