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- W2318116718 abstract "Detection of explosives, such as 2,4,6-trinitrotoluene (TNT), is becoming increasingly important. Here, 2,4-dinitrotoluene (DNT, a common analogue of TNT) is detected electrochemically. A receptor based electrode for the detection of DNT was prepared by modifying the surface of the walls of three-dimensionally ordered macroporous (3DOM) carbon. Nitrophenyl groups were first attached by the electrochemical reduction of 4-nitrobenzenediazonium ions, followed by potentiostatic reduction to aminophenyl groups. Chemical functionalization reactions were then performed to synthesize the receptor, which contains two urea groups, and a terminal primary amine. Detection of DNT using cyclic voltammetry was impeded by a large background current that resulted from the capacitance of 3DOM carbon. Detection by square wave voltammetry eliminated the background current and improved the detection limit. Unfunctionalized 3DOM carbon electrodes showed no response to DNT, whereas the receptor-modified electrodes responded to DNT with a detection limit of 10 μM. Detection of DNT was possible even in the presence of interferents such as nitrobenzene." @default.
- W2318116718 created "2016-06-24" @default.
- W2318116718 creator A5039873198 @default.
- W2318116718 creator A5057785643 @default.
- W2318116718 creator A5068326327 @default.
- W2318116718 creator A5073593571 @default.
- W2318116718 date "2012-08-28" @default.
- W2318116718 modified "2023-09-27" @default.
- W2318116718 title "Receptor-Based Detection of 2,4-Dinitrotoluene Using Modified Three-Dimensionally Ordered Macroporous Carbon Electrodes" @default.
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- W2318116718 doi "https://doi.org/10.1021/am301108a" @default.
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