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

被引：40
|
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
收藏
页码：152 / 158
页数：7
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