一种新型声催化剂Au/NiGaO-Au-BiO纳米复合材料的制备及其在有机污染物声催化降解中的应用。
Preparation of a novel sonocatalyst, Au/NiGaO-Au-BiO nanocomposite, and application in sonocatalytic degradation of organic pollutants.
作者信息
Wang Guowei, Huang Yingying, Li Guanshu, Zhang Hongbo, Wang Yidi, Li Bowen, Wang Jun, Song Youtao
机构信息
College of Chemistry, Liaoning University, Shenyang 110036, PR China.
College of Environment, Liaoning University, Shenyang 110036, PR China.
出版信息
Ultrason Sonochem. 2017 Sep;38:335-346. doi: 10.1016/j.ultsonch.2017.03.031. Epub 2017 Mar 16.
A novel nanocomposite, Au/NiGaO-Au-BiO, as an effective sonocatalyst was prepared through hydrothermal process and high-temperature calcination methods, and then characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The sonocatalytic activity of Au/NiGaO-Au-BiO nanocomposite was detected through the degradation of some organic pollutants under ultrasonic irradiation. Furthermore, the influences of mass ratio of NiGaO and BiO, ultrasonic irradiation time and used times on the sonocatalytic degradation efficiency were investigated by using Total Organic Carbon (TOC) and UV-vis spectroscopy. The experimental results showed that, because of the existence of Au nanoparticles (AuNPs) served as both conductive passageway and co-catalyst, the nanocomposite sonocatalyst (Au/NiGaO-Au-BiO) displayed an excellent sonocatalytic activity in degradation of some organic pollutants under ultrasonic irradiation.
通过水热法和高温煅烧法制备了一种新型纳米复合材料Au/NiGaO-Au-BiO作为有效的声催化剂，然后用X射线衍射仪（XRD）、扫描电子显微镜（SEM）和能量色散X射线光谱仪（EDX）对其进行表征。通过在超声辐射下对一些有机污染物的降解来检测Au/NiGaO-Au-BiO纳米复合材料的声催化活性。此外，利用总有机碳（TOC）和紫外可见光谱研究了NiGaO与BiO的质量比、超声辐射时间和使用次数对声催化降解效率的影响。实验结果表明，由于金纳米颗粒（AuNPs）既作为导电通道又作为助催化剂的存在，纳米复合声催化剂（Au/NiGaO-Au-BiO）在超声辐射下对一些有机污染物的降解表现出优异的声催化活性。
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