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MgAl-layered double hydroxide flower arrays grown on carbon paper for efficient electrochemical sensing of nitrite.
- Source :
-
Journal of Electroanalytical Chemistry . Dec2019, Vol. 855, pN.PAG-N.PAG. 1p. - Publication Year :
- 2019
-
Abstract
- In this work, MgAl-layered double hydroxide nanosheets arrays in-situ grown on commercial carbon paper (MA-LDH/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 μM, 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. Flower-like MgAl-layered double hydroxide nanosheets arrays grown on carbon paper have been successfully fabricated and used as high-performance free-standing electrode for electrochemical nitrite detection with high sensitivity, selectivity, and stability. Image 1 • MgAl-layered double hydroxide nanosheets arrays on carbon paper (MA-LDH/CP) is prepared via a facile hydrothermal method. • MA-LDH/CP serves as a free-standing electrochemical sensor for nitrite detection. • High sensitivity, stability, and anti-interference to other species toward nitrite sensing are achieved. • 3D hierarchical architecture of MA-LDH enhances electrochemical active area, electron transfer, and nitrite adsorption. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15726657
- Volume :
- 855
- Database :
- Academic Search Index
- Journal :
- Journal of Electroanalytical Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 140396334
- Full Text :
- https://doi.org/10.1016/j.jelechem.2019.113632