摘要
为了实现有效降解水中酚类污染物,采用溶胶-凝胶法和热分解法制备了不同原子比的负载金纳米氧化锌(Au@ZnO)。通过比表面积(BET)、X-射线粉末衍射仪(XRD)、扫描电镜(SEM)、紫外可见吸收光谱(UV-Vis)对所制备的Au@ZnO进行结构表征。以苯酚为废水模型,研究了不同金负载量、催化剂的用量、苯酚的初始浓度对光催化性能的影响。研究结果表明:金均匀地负载于六方纤锌矿结构的纳米氧化锌上,Au@ZnO催化剂展示了较好的光催化性能,苯酚在3h内的降解率可达85.9%。
In order to effectively degrade phenolic pollutants in water,nano-ZnO particles were prepared by sol-gel method.Different atomic ratio gold-loaded nano-ZnO(Au@ZnO)was prepared by thermal decomposition.The prepared Au@ZnO photocatalyst was characterized by specific surface area(BET),X-ray powder diffraction diffractometry(XRD),scanning electron microscopy(SEM),and UV-Vis absorption.The effect of different gold amount,amount of catalyst and initial concentration of phenol on photocatalytic performance was studied by using phenol as the wastewater model.The study found that the gold is evenly supported on the nano-ZnO with hexagonal wurtzite structure.The Au@ZnO catalyst exhibits good photocatalytic performance and the degradation rate of phenol is 85.9%within 3 hours.
作者
周媛
赵霜
多喜
薛振华
盛显良
ZHOU Yuan;ZHAO Shuang;DUO Xi;XUE Zhenhua;SHENG Xianliang((1.College of Material Science and Art Design,Inner Mongolia Agricultural University Hohhot 010018,China;College of Science,Inner Mongolia Agricultural University,Hohhot 010018,China)
出处
《内蒙古农业大学学报（自然科学版）》
CAS
北大核心
2019年第5期91-96,共6页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
内蒙古农业大学基础研究基金资助项目(JC2015005)
内蒙古自治区自然科学基金资助项目(2014MS0537)
关键词
纳米氧化锌
金
苯酚
光催化
降解
Nano-ZnO
gold
phenol
photocatalysis
degradation
