Preparation of Er³⁺:Y₃Al₅O₁₂/WO₃-KNbO₃ composite and application in treatment of methamphetamine under ultrasonic irradiation

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• 作者：Hongbo Zhang^a ; Yingying Huang^a ; Guanshu Li^b ; Guowei Wang^a ; Dawei Fang^a ; Youtao Song^b ; ; Jun Wang^a ; ^b ; ^{wangjun888tg@126.com} ; ^{wangjun891@sina.com}
• 关键词：Up-conversion luminescence agent (Er3+ ; Y3Al5O12) ; Sonocatalyst (Er3+ ; Y3Al5O12/KNbO3-WO3) ; Methamphetamine (MAPA) ; Sonocatalytic degradation
• 刊名：Ultrasonics Sonochemistry
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：35
• 期：part_PA
• 页码：478-488
• 全文大小：3028 K
• 卷排序：35

文摘

Er3+:Y3Al5O12/WO3-KNbO3 composite powder as an effective sonocatalyst was prepared via collosol-gelling-hydrothermal and high-temperature calcination methods. The textures of materials were observed by X-ray diffractometer (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). In order to estimate the sonocatalytic activity of Er3+:Y3Al5O12/WO3-KNbO3 composite powder, the sonocatalytic degradation of methamphetamine (MAPA) was performed. Furthermore, the influences of mass ratio of WO3 and KNbO3, ultrasonic irradiation time, catalyst addition amount, initial methamphetamine (MAPA) concentration and used times on the sonocatalytic degradation of methamphetamine (MAPA) caused by Er3+:Y3Al5O12/WO3-KNbO3 composite powder were investigated by using gas chromatography. Under optimal conditions of 1.00 g/L Er3+:Y3Al5O12/WO3-KNbO3 addition amount and 10.00 mg/L methamphetamine (MAPA) initial concentration, 68% of methamphetamine (MAPA) could be removed after 150 min ultrasonic irradiation. The experimental results showed that the Er3+:Y3Al5O12/WO3-KNbO3 as sonocatalyst displayed an excellent sonocatalytic activity in degradation of methamphetamine (MAPA) under ultrasonic irradiation.