期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 855, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2019.113632
关键词
Free-standing electrode; Layered double hydroxide; Electrochemical sensing; Nitrite detection
资金
- Water Research Seed Grant of Texas A&M Engineering Experiment Station
- Texas A&M University College of Engineering
In this work, MgAl-layered double hydroxide nanosheets arrays in-situ grown on commercial carbon paper (MALDH/CP) have been successfully fabricated via a facile one-pot hydrothermal method, which shows a hierarchical flower-like structure. The as-prepared MA-LDH/CP is used as a free-standing electrode for electrochemical detection of nitrite in aqueous media, showing high sensitivity with a low detection limit of 0.03 mu M, and good anti-interference to other species. Moreover, it exhibits outstanding electrochemical stability without any deactivation in almost two months. The superior performance of MA-LDH/CP for nitrite determination is attributed to the 3D hierarchical architecture of MA-LDH nanolayers and a large number of exposed surface sites, which facilitate the electron transfer and nitrite adsorption.
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