Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 258, Issue -, Pages 1107-1116Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2017.12.001
Keywords
Modified electrode; Nitrite ion; Multiwalled carbon nanotubes; Electrochemical detection
Funding
- Zhejiang Provincial Natural Science Foundation of China [LY16B060001, LY18B060003]
- National Nature Science Foundation of China [21477114]
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A glassy carbon electrode modified with Ag/Cu nanoclusters and multiwalled carbon nanotubes was fabricated using the electrodeposition method to detect nitrite in solution. This modified electrode showed electrocatalytic activity for the oxidation of nitrite. A cyclic voltammetry investigation of the electro chemical behavior of the modified electrode in nitrite solution revealed an intense oxidation peak for nitrite at 0.85 V. Upon increase of the nitrite concentration from 1.0 mu mol L-1 to 1.0 mmol L-1, the current response increased linearly, with a detection limit of 2 x 10(-7) mol L-1. The electrode exhibited good stability, as well as satisfactory performance in the detection of nitrite in lake water, drinking water and seawater. (C) 2017 Elsevier B.V. All rights reserved.
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