Wei Chunsheng, Yi Kuiyu, Sun Guangsheng, Wang Jun
College of Chemistry, Liaoning University, Shenyang 110036, PR China; Criminal Investigation Police University of China, Shenyang 110854, PR China.
Criminal Investigation Police University of China, Shenyang 110854, PR China.
Ultrason Sonochem. 2018 Apr;42:57-67. doi: 10.1016/j.ultsonch.2017.10.031. Epub 2017 Oct 31.
The composited sonocatalyst Er:YAlO/NbO was prepared by ultrasonic dispersion and high temperature calcinations method. The microstructure of Er:YAlO was prepared via sol-gel method and NbO was prepared by hydrothermal method. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectrometer (EDX), ultraviolet-visible (UV-vis) spectra and photoluminescence (PL) spectra, respectively. The sonocatalytic decomposition activity of composite sonocatalyst Er:YAlO/NbO was investigated by using ultrasound as sound source and methamphetamine hydrochloride as the target degradation product. The influences of composite sonocatalyst Er:YAlO/NbO with different ratios, calcination temperature, ultrasonic power, ultrasonic temperature and recycle times were investigated. The results showed that the sonocatalytic degradation rate was 82.17% after 5 h sonocatalytic decomposition under the condition of ultrasonic power of 700 W, frequency of 45 kHz and surrounding temperature of 30 °C. The sonocatalytic degradation ability of composite sonocatalyst for methamphetamine hydrochloride in aqueous solution was still good after recycled five times. The hydroxyl radicals (OH) and holes (h) are identified and hydroxyl radicals (OH) plays a major role during the oxidation process. The experimental results show that sonocatalytic is a new idea for the harmless treatment of amphetamine-type stimulants.
采用超声分散和高温煅烧法制备了复合声催化剂Er:YAlO/NbO。通过溶胶-凝胶法制备Er:YAlO的微观结构，采用水热法制备NbO。分别用X射线衍射（XRD）、扫描电子显微镜（SEM）、能量色散X射线光谱仪（EDX）、紫外-可见（UV-vis）光谱和光致发光（PL）光谱对样品进行了表征。以超声为声源，盐酸甲基苯丙胺为目标降解产物，研究了复合声催化剂Er:YAlO/NbO的声催化分解活性。考察了不同比例的复合声催化剂Er:YAlO/NbO、煅烧温度、超声功率、超声温度和循环次数的影响。结果表明，在超声功率700W、频率45kHz、环境温度30℃的条件下，超声催化分解5h后，声催化降解率为82.17%。复合声催化剂对盐酸甲基苯丙胺在水溶液中的声催化降解能力在循环使用5次后仍良好。确定了羟基自由基（OH）和空穴（h），且羟基自由基（OH）在氧化过程中起主要作用。实验结果表明，声催化是苯丙胺类兴奋剂无害化处理的新思路。
