News Column

Reports on Analytical Science Findings from Southeast University Provide New Insights

May 30, 2014

By a News Reporter-Staff News Editor at Science Letter -- New research on Science is the subject of a report. According to news reporting originating from Nanjing, People's Republic of China, by NewsRx correspondents, research stated, "This work presents the enhanced electrochemiluminescence (ECL) of a newly prepared nanosilver-carbon nanodot (Ag-C-dot) composite and its application for the sensitive detection of sulfide (S(2-)) ions. The Ag-C-dot composite was easily prepared by adding silver nitrate into C-dot colloids through an alkaline reduction."

Our news editors obtained a quote from the research from Southeast University, "The obtained Ag-C-dots were characterized by UV-vis spectra, fluorescence spectra and transmission electron microscopy. The electrochemical and ECL behaviors of the Ag-C-dot composite were investigated by cyclic voltammetry. Moreover, a simple label-free method to detect S(2-) ions with a high selectivity and sensitivity has been developed based on the ECL of the Ag-C-dot composite in aqueous media. The sensing mechanism could be due to the strong and specific interaction between the S(2-) ions and the Ag atoms/ions on the surface of the Ag-C-dot composite, which dramatically affects the resulting ECL of the Ag-C-dot composite. The linear response to detect S(2-) ions ranges from 0.05 to 100 ?M with a detection limit of 0.027 ?M (~1 ppb)."

According to the news editors, the research concluded: "This work indicates that the Ag-C-dot nanocomposite possesses potential applications for environment sensing."

For more information on this research see: Electrochemiluminescence of a nanoAg-carbon nanodot composite and its application to detect sulfide ions. Analyst, 2014;139(7):1751-5. (Royal Society of Chemistry -; Analyst -

The news editors report that additional information may be obtained by contacting Z.X. Wang, Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, People's Republic of China. Additional authors for this research include C.L. Zheng, Q.L. Li and S.N Ding (see also Science).

Keywords for this news article include: Asia, Nanjing, Science, People's Republic of China.

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Source: Science Letter

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