New method of improving photocatalytic activity of commercial Degussa P25 for azo dyes, decomposition

被引：134

作者：

Janus, M. ^{[1
]}

Morawski, A. W. ^{[1
]}

机构：

[1] Tech Univ Szczecin, Inst Chem & Environm Engn, Dept Water Technol & Environm Engn, PL-70322 Szczecin, Poland

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2007年 / 75卷 / 1-2期

关键词：

carbon-modified TiO2; photocatalysis; dye decomposition; TiO2-P25;

D O I：

10.1016/j.apcatb.2007.04.003

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：

New method of improving photocatalytic activity of commercial TiO2 (Degussa P25, Germany) is presented. Modified P25 has better photocatalyfic activity and "practical efficiency" than unmodified TiO2 Degussa P25. The modification of P25 was conducted under elevated pressure in organic solvent atmosphere. It leads to built in carbon into TiO2 structure without surface hydroxyl groups reduction. The photocatalytic activity of modified P25 was tested during three azo dyes (reactive red, reactive black, direct green - Boruta-Kolor Company, Poland) decomposition under UV light irradiation. The photocatalytic activity of modified P25 was two times higher than for unmodified P25. Moreover after the process the new photocatalyst had better sedimentation and filtration was easier. (c) 2007 Elsevier B. V. All rights reserved.

引用

页码：118 / 123

页数：6

共 26 条

[1] TiO2 activation by using activated carbon as a support -: Part II.: Photoreactivity and FTIR study [J].

Araña, J ;

Doña-Rodríguez, JM ;

Rendón, ET ;

Cabo, CGI ;

González-Díaz, O ;

Herrera-Melián, JA ;

Pérez-Peña, J ;

Colón, G ;

Navío, JA .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2003, 44 (02) :153-160

[2] Solar photocatalytic degradation of 4-chlorophenol using the synergistic effect between titania and activated carbon in aqueous suspension [J].

Herrmann, JM ;

Matos, J ;

Disdier, J ;

Guillard, C ;

Laine, J ;

Malato, S ;

Blanco, J .

CATALYSIS TODAY, 1999, 54 (2-3) :255-265

[3]

Hu C, 2001, APPL CATAL B-ENVIRON, V30, P277

[4] Carbon-modified TiO2 photocatalyst by ethanol carbonisation [J].

Janus, M ;

Inagaki, M ;

Tryba, B ;

Toyoda, M ;

Morawski, AW .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 63 (3-4) :272-276

[5] New preparation of a carbon-TiO2 photocatalyst by carbonization of n-hexane deposited on TiO2 [J].

Janus, M ;

Tryba, B ;

Inagaki, M ;

Morawski, AW .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2004, 52 (01) :61-67

[6] The effect of operational parameters and TiO2-doping on the photocatalytic degradation of azo-dyes [J].

Kiriakidou, F ;

Kondarides, DI ;

Verykios, XE .

CATALYSIS TODAY, 1999, 54 (01) :119-130

[7]

KONEKO M, 2002, PHOTOCATALYSIS SCI T, P117

[8] TiO2-assisted photocatalytic degradation of azo dyes in aqueous solution: kinetic and mechanistic investigations - A review [J].

Konstantinou, IK ;

Albanis, TA .

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY, 2004, 49 (01) :1-14

[9] The preparation of TiO2-nitrogen doped by calcination of TiO2•xH2O under ammonia atmosphere for visible light photocatalysis [J].

Kosowska, B ;

Mozia, S ;

Morawski, AW ;

Grzmil, B ;

Janus, M ;

Kalucki, K .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2005, 88 (03) :269-280

[10] Visible light photodegradation of 4-chlorophenol with a coke-containing titanium dioxide photocatalyst [J].

Lettmann, C ;

Hildenbrand, K ;

Kisch, H ;

Macyk, W ;

Maier, WF .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 32 (04) :215-227

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