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- W1252487110 abstract "It is highly desirable and a popular topic in scientific research to develop a highly sensitive and selective detection and quantitative analysis method of determining trace silver ions (Ag+) in aqueous media since Ag+ ions are recognized as one of the most hazardous metal pollutants. Three-dimensional graphene oxide (3D-GO) was decorated with Fe3O4 to form nanocomposites of Fe3O4@3D-GO, which were further used as electrode materials in an electrochemical DNA sensor for detecting Ag+. Because of the chemical functionality and porous structure of the developed nanocomposites, single-stranded and cytosine-rich oligonucleotides could be anchored onto their surfaces or interior, followed by selective detection of Ag+ through formation of C–Ag+–C complex forms. The results of electrochemical measurement showed that the Fe3O4@3D-GO nanocomposites exhibits high sensitivity for detecting Ag+ with a detection limit of 2.0 pM within the range of 0.01–100 nM Ag+ (S/N = 3). The developed electrochemical biosensor based on Fe3O4@3D-GO exhibits highly selectivity, good repeatability, and stability for detecting Ag+ ions. The results of this work demonstrate that Fe3O4@3D-GO nanocomposites could be used as a promising tool to detect heavy metal ions in water or the environment." @default.
- W1252487110 created "2016-06-24" @default.
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- W1252487110 date "2015-12-01" @default.
- W1252487110 modified "2023-09-26" @default.
- W1252487110 title "A feasible C-rich DNA electrochemical biosensor based on Fe3O4@3D-GO for sensitive and selective detection of Ag+" @default.
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- W1252487110 doi "https://doi.org/10.1016/j.jallcom.2015.08.229" @default.
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