Sonocatalytic degradation of amaranth catalyzed by La3+ doped TiO2 under ultrasonic irradiation

被引：38

作者：

Song, Limin ^{[2
]}

Chen, Chao ^{[2
]}

Zhang, Shujuan ^{[1
]}

Wei, Qingwu ^{[2
]}

机构：

[1] Tianjin Univ Sci & Technol, Coll Sci, Tianjin 300457, Peoples R China

[2] Tianjin Polytech Univ, Coll Environm & Chem Engn, State Key Lab Hollow Fiber Membrane Mat & Membran, Tianjin 300160, Peoples R China

来源：

ULTRASONICS SONOCHEMISTRY | 2011年 / 18卷 / 05期

关键词：

La3+ doped TiO2; Amaranth; Sonocatalysis; VISIBLE-LIGHT PHOTOCATALYSIS; HYDROGEN-PEROXIDE SOLUTION; RUTILE TIO2; TRANSITION CRYSTAL; NITROGEN; POWDER; ANATASE; PHASE;

D O I：

10.1016/j.ultsonch.2011.03.002

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The relationship between the physicochemical properties and the activity of sonocatalysts is investigated and elucidated in the sonodegradation of amaranth. The sonocatalyts are composed of La3+ doped TiO2 synthesized via a sal gel process. The sonocatalysts are characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopic analysis, UV-Vis absorption spectroscopy, and X-ray photoelectron emission spectroscopy. The sonodegradation products of amaranth are analyzed by UV Vis absorption spectroscopy. The presence of the La3+ doped TiO2 catalysts substantially enhances the sonocatalytic degradation of amaranth in aqueous suspensions. The possible sonocatalytic mechanisms for such are discussed. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：1057 / 1061

页数：5

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