Au/UiO-66(Hf)纳米复合材料修饰电极电化学检测Cr(Ⅵ)的性能研究  

Performance study of Au/UiO-66(Hf) nanocomposites modified electrode for electrochemical detection of Cr(Ⅵ)

作　　者：丁章俊 王琪 刘瑶 崔康平[1] 陈星 DING Zhangjun;WANG Qi;LIU Yao;CUI Kangping;CHEN Xing(School of Resource and Environmental Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学资源与环境工程学院,合肥230009

出　　处：《工业用水与废水》2023年第6期88-93,共6页Industrial Water & Wastewater

摘　　要：采用溶剂热法和化学还原法制备出Au/UiO-66(Hf)纳米复合材料,再将该纳米复合材料修饰到玻碳电极上,运用线性扫描伏安法(LSV)实现了废水中Cr(Ⅵ)的有效检测。Au/UiO-66(Hf)/GCE传感器对质量浓度范围为100~1 000μg/L的Cr(Ⅵ)具有优异的线性响应,检测灵敏度为0.002 34μA·L/μg,最低检测限为18.76μg/L。同时,该传感器具有良好的稳定性与抗干扰性能,对实际电镀废水中Cr(Ⅵ)的检测回收率达105.03%。Au/UiO-66(Hf)nanocomposites were prepared by solvothermal and chemical reduction methods,and then the nanocomposites were modified onto a glassy carbon electrode to achieve effective detection of Cr(Ⅵ)in wastewater using linear scanning voltammetry(LSV)method.The Au/UiO-66(Hf)/GCE sensor has excellent linear response to Cr(Ⅵ)with mass concentration range of 100-1000μg/L,the detection sensitivity and limit were 0.00234μA·L/μg and 18.67μg/L respectively.And also,the sensor has good stability and strong anti-interference performance,and the detection recovery rate of Cr(Ⅵ)from actual electroplating wastewater reached 105.03%.

关 键 词：电镀废水 Cr(Ⅵ) 电化学检测 线性扫描伏安法 Au/UiO-66(Hf) 

分 类 号：X703.1[环境科学与工程—环境工程]