Preparation of (5.0%)Er3+:Y3Al5O12/Pt-(TiO2-Ta2O5) nanocatalysts and application in sonocatalytic decomposition of ametryn in aqueous solution

被引：19

作者：

Li, Guanshu ^{[1
]}

Zhang, Hongbo ^{[2
]}

Wei, Chunsheng ^{[2
,3
]}

Huang, Yingying ^{[2
]}

Dou, Xuekai ^{[1
]}

Wang, Yidi ^{[1
]}

Wang, Jun ^{[1
,2
]}

Song, Youtao ^{[1
]}

机构：

[1] Liaoning Univ, Coll Environm, Shenyang 110036, Peoples R China

[2] Liaoning Univ, Coll Chem, Shenyang 110036, Peoples R China

[3] Natl Police Univ China, Shenyang 110854, Peoples R China

来源：

ULTRASONICS SONOCHEMISTRY | 2017年 / 34卷

基金：

美国国家科学基金会;

关键词：

Ultrasonic irradiation; Sonocatalytic decomposition; TiO2-Ta2O5; composite; Ametryn; PHOTOCATALYTIC HYDROGEN EVOLUTION; ASSISTED HYDROTHERMAL SYNTHESIS; SOL-GEL SYNTHESIS; ORGANIC POLLUTANTS; DEGRADATION; TIO2; REMOVAL; DYES; NANOPARTICLES; ADSORPTION;

D O I：

10.1016/j.ultsonch.2016.07.009

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

(5.0%)Er3+:Y3Al5O12/Pt-(TiO2-Ta2O5) powder, as a high effective sonocatalyst, was prepared using sol-gel and calcination method. Then it was characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX). In order to evaluate the sonocatalytic activity of the prepared (5.0%)Er3+:Y3Al5O12/Pt-(TiO2-Ta2O5) powder, the sonocatalytic decomposition of ametryn was studied. In addition, some influencing factors such as different Ti/Ta molar ratios on the sonocatalytic activity of the prepared (5.0%)Er3+:Y3Al5O12/Pt-(TiO2-Ta2O5) powder, catalyst added amount with ultrasonic irradiation time and used times on the sonocatalytic decomposition efficiency were examined by using ion chromatogram determination. The experimental results showed that the best sonocatalytic decomposition ratio of ametryn were 77.50% based on the N atom calculation and 95.00% based on the S atom calculation, respectively, when the conditions of 10.00 mg/L initial concentration, 1.00 g/L prepared (5.0%)Er3+:Y3Al5O12/Pt-(TiO2-Ta2O5) powder (Ti/Ta = 1.00:0.25 heat-treated at 550 degrees C for 3.0 h) added amount, 150 min ultrasonic irradiation (40 kHz frequency and 300 W output power), 100 mL total volume and 25-28 degrees C temperature were adopted. Therefore, the (5.0%)Er3+:Y3Al5O12/Pt-(TiO2-Ta2O5) composite nanoparticles could be considered as an effective sonocatalyst for decomposition of ametryn in aqueous solution. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：763 / 773

页数：11

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