TiO2 doped with Sm3+ by sol-gel: Synthesis, characterization and photocatalytic activity of diuron under solar light

被引：42

作者：

de la Cruz, D. ^{[1
,2
]}

Arevalo, J. C. ^{[2
,3
]}

Torres, G. ^{[2
]}

Bautista Margulis, R. G. ^{[3
]}

Ornelas, C. ^{[1
]}

Aguilar-Elguezabal, A. ^{[1
]}

机构：

[1] CIMAV, Ctr Invest Mat Avanzados, Chihuahua 31109, Chih, Mexico

[2] Univ Juarez Autonoma Tabasco, Lab Catalisis Heterogenea, DACB, Cunduacan 86690, Tabasco, Mexico

[3] Univ Juarez Autonoma Tabasco, DACBiol, Villahermosa 86150, Tabasco, Mexico

来源：

CATALYSIS TODAY | 2011年 / 166卷 / 01期

关键词：

TiO2 doped Sm3+; Sol-gel; Synthesis and characterization; Photocatalytic diuron; Solar light; AQUEOUS-SOLUTION; PHASE-TRANSFORMATION; DEGRADATION; ANATASE; RUTILE; OXIDATION; CATALYSTS;

D O I：

10.1016/j.cattod.2010.08.023

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A simple method to synthesize highly dispersed Sm3+ on TiO2 by sol-gel which induced significant changes in the photocatalytic properties, Eg values, specific surface areas, and crystal size of pure TiO2, is reported. As is well known, thermal treatment of anatase TiO2 at 600 degrees C leads to the transformation to rutile phase, however for Sm3+ doped photocatalyst here reported, a significant amount of anatase phase remained even after thermal treatment at 800 degrees C, showing an interesting photocatalytic activity under sunlight degradation of diuron. TiO2 doped with 0.3 wt% Sm3+ and calcined at 500 degrees C showed the best performance for the photocatalytic degradation of diuron herbicide. (C) 2010 Elsevier B. V. All rights reserved.

引用

页码：152 / 158

页数：7

共 23 条

[1] Improved photocatalytic activity and characterization of mixed TiO2/SiO2 and TiO2/Al2O3 materials [J].

Anderson, C ;

Bard, AJ .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (14) :2611-2616

[2] Design and evaluation of a novel-controlled periodic illumination reactor to study photocatalysis [J].

Buechler, KJ ;

Nam, CH ;

Zawistowski, TM ;

Noble, RD ;

Koval, CA .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1999, 38 (04) :1258-1263

[3] Mechanisms of direct and TiO2-photocatalysed UV degradation of phenylurea herbicides [J].

Canle, M ;

Fernández, MI ;

Rodríguez, S ;

Santaballa, JA ;

Steenken, S ;

Vulliet, E .

CHEMPHYSCHEM, 2005, 6 (10) :2064-2074

[4] The photocatalytic removal of bacterial pollutants from drinking water [J].

Dunlop, PSM ;

Byrne, JA ;

Manga, N ;

Eggins, BR .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2002, 148 (1-3) :355-363

[5] MICROSTRUCTURAL DEVELOPMENT IN NANOPHASE TIO2 DURING ANNEALING [J].

EASTMAN, JA .

JOURNAL OF APPLIED PHYSICS, 1994, 75 (02) :770-779

[6] Photocatalytic degradation of diuron in aqueous solution in presence of two industrial titania catalysts, either as suspended powders or deposited on flexible industrial photoresistant papers [J].

El Madani, M. ;

Guillard, C. ;

Perol, N. ;

Chovelon, J. M. ;

El Azzouzi, M. ;

Zrineh, A. ;

Herrmann, J. M. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 65 (1-2) :70-76

[7] Inhibition of the anatase-rutile phase transformation with addition of CeO2 to CuO-TiO2 system:: Raman spectroscopy, X-ray diffraction, and textural studies [J].

Francisco, MSP ;

Mastelaro, VR .

CHEMISTRY OF MATERIALS, 2002, 14 (06) :2514-2518

[8] Effect of dopants on grain coalescence and oxygen mobility in nanostructured titania anatase and rutile [J].

Guidi, V ;

Carotta, MC ;

Ferroni, M ;

Martinelli, G ;

Sacerdoti, M .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (01) :120-124

[9] Remediation of pesticide contaminated soil using TiO2 mediated by solar light [J].

Higarashi, MM ;

Jardim, WE .

CATALYSIS TODAY, 2002, 76 (2-4) :201-207

[10] Enhanced photodecomposition of 4-chlorophenol in aqueous solution by deposition of CdS on TiO2 [J].

Kang, MG ;

Han, HE ;

Kim, KJ .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1999, 125 (1-3) :119-125

← 1 2 3 →