Abstract
The lead (Pb) in the environment is harmful to human body, so it is of practical significance and application value to develop a method for detecting lead ions (Pb2+) in the environment. Herein, Zeolitic imidazolate framework/nickel foam (ZnCo ZIF-L/NF) was in situ grown on nickel foam (NF) substrate by hydrothermal method, and aged and hydrolyzed at room temperature to transform ZnCo ZIF-L into zinc cobalt layered double hydroxide/nickel foam (ZnCo ZLDH/NF). CeO2 nanospheres were synthesized and loaded onto ZnCo ZLDH/NF materials to prepare ZnCo ZLDH@CeO2/NF heterostructure composite electrodes. Finally, ZnCo ZLDH@CeO2/NF was used to detect divalent lead ion (Pb2+) by differential pulse anodic stripping voltammetry (DPASV). The electrochemical sensor constructed by the ZnCo ZLDH@CeO2/NF composite electrode exhibits the concentration linear range of 0.1 μM–30 μM with a limit of detection 9 nM (S/N = 3) and the sensitivity of 67 A/M. Meanwhile, the ZnCo ZLDH@CeO2/NF composite electrode has good repeatability and anti-interference stability.
Funder
National Natural Science Foundation of China
Publisher
The Electrochemical Society
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献