Hongbo Zhang, Yingying Huang, Guowei Wang, Dawei Fang

College of Chemistry, Liaoning University

Guanshu Li, Youtao Song, Jun Wang

College of Environment, Liaoning University

Abstract

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.

Read the full article here:   98-Preparation of Er(3)Y3Al5O12WO3-KNbO3 composite and application in treatment of methamphetamine under ultrasonic irradiation.pdf