摘要
采用改进的Hummers法制得氧化石墨烯(GO),与FeSO 4在120℃下回流还原,再通过浸渍Cu(NO3)2、煅烧得到α-Fe2O3/CuO/rGO非均相芬顿催化材料,并对材料进行扫描电子显微镜(SEM)表征和X射线粉末衍射(XRD)分析.以苯酚为目标污染物,研究α-Fe2O3/CuO/rGO复合材料对苯酚的催化降解性能.结果表明:在pH=5.8,双氧水的初始浓度为40 mmol/L,催化剂投加量为1.0g/L条件下,降解90 min时,α-Fe2O3/CuO/rGO对0.1 g/L苯酚的去除率达到100%;在降解180 min时TOC的去除率约70%,说明α-Fe2O3/CuO/rGO对苯酚有较高的矿化效率,是一种具有应用前景的芬顿催化剂.
The graphene oxide(GO)was prepared with the modified Hummers method.Then it was reduced with FeSO4·7H2O through high temperature reflux.The reduction product was impregnated with Cu(NO 3)2 and calcined to obtain the heterogeneous Fenton catalytic material(α-Fe2O 3/CuO/rGO).The materials were characterized with XRD and SEM.Phenol was used as the target pollutant to investigate the characteristics and efficiency ofα-Fe 2O3/CuO/rGO for the phenol degradation.The experimental results showed that at the optimum state,pH=5.8,40 mmol/L H2O2,1.0 g/L catalyst and 0.1 g/L Phenol,the degradation percentage of Phenol was 100%within 90 min;the TOC removal efficiency reached approximately 70%within 180 min.Therefore,α-Fe2O3/CuO/rGO showed high efficiency of phenol degradation and is a promising Fenton catalyst.
作者
杨镇杉
李耀威
吴宏海
YANG Zhenshan;LI Yaowei;WU Honghai(School of Chemistry and Environment,South China Normal University,Guangzhou 510006,China)
出处
《华南师范大学学报（自然科学版）》
CAS
北大核心
2019年第6期36-41,共6页
Journal of South China Normal University(Natural Science Edition)
基金
国家自然科学基金项目(21006037)
关键词
非均相
芬顿
石墨烯
催化降解
苯酚
heterogeneous
Fenton
graphene
catalytic degradation
phenol
作者简介
通信作者:李耀威,副教授,Email:liyaowei@scnu.edu.cn.
