Tungstate doped TiO2-SiO2 aerogels for preferential photocatalytic degradation of methamphetamine in seizure samples containing caffeine under simulated sunlight

被引：13
|
作者：
Li, Yizhou [1 ]
Yang, Yepeng [1 ]
Yang, Peisong [1 ]
Jiang, Liang [1 ]
Wang, Wei [1 ]
He, Jiao [1 ]
Chen, Yongjuan [1 ]
Wang, Jiaqiang [1 ]
机构：
[1] Yunnan Univ, Natl Ctr Int Res Photoelect & Energy Mat, Yunnan Prov Engn Res Ctr Photocatalyt Treatment I, Sch Chem Sci & Technol,Sch Mat & Energy, Kunming 650091, Yunnan, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2020年 / 145卷
基金：
中国国家自然科学基金;
关键词：
Methamphetamine; Preferentially photocatalytic degradation; Tungstate; Aerogels; TiO2; ILLICIT DRUGS; OXIDATION; TITANIA; REMOVAL; PHARMACEUTICALS; ENHANCEMENT; COMPLEXES; PRODUCTS;
D O I：
10.1016/j.catcom.2020.106121
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：
Tungstate doped TiO2-SiO2 aerogels (W/TiO2-SiO2) was synthesized and photocatalytic degraded methamphetamine (MAT) preferentially in seizure samples which containing caffeine. As a control, TiO2 (P25) photocatalytic degraded both MAT and caffeine simultaneously. The degradation rate of MAT under simulated sunlight for TiO2 (P25), TiO2-SiO2 aerogels, W/TiO2 and W/TiO2-SiO2 are 28.1%, 64.2%, 74.1% and 98.8% within 60 min. The photocatalytic efficiency of W/TiO2-SiO2 for degradation of MAT is 7.0, 4.4 and 1.9 times higher than TiO2 (P25), TiO2-SiO2 aerogels and W/TiO2. The enhanced photocatalytic performance of W/TiO2-SiO2 could be attributed to increase the adsorption of MAT induced by tungstate-doping.
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页数：5
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