Preparation of Silver Nanoparticles Reduced by Formamidinesulfinic Acid and Its Application in Colorimetric Sensor |
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| Authors: | Jinping Song Qi Ma Sufang Zhang Yong Guo Chuan Dong |
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| Institution: | 1.College of Chemistry and Envrionmental Engineering and Institute of Applied Chemistry,Shanxi Datong University,Datong,China;2.Institute of Environmental Science,Shanxi University,Taiyuan,China |
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| Abstract: | A rapid one-step preparation approach of silver nanoparticles (AgNPs) was reported by employing formamidinesulfinic acid as reducing agent and soluble starch as stabilizing agent. The formation of AgNPs was further confirmed by using UV–Vis absorption spectroscopy, X-ray diffraction spectroscopy and transmission electron microscopy techniques. The resultant AgNPs could be directly used for the colorimetric reaction with metal ions. The results showed that Al3+, Cr3+, Fe3+ and Hg2+ ions could induce the color change of AgNPs from yellow to pink (Al3+), orange (Cr3+) and colorless (Fe3+ and Hg2+), respectively, which can be observed by the naked eye. Based on these, a sensitive colorimetric sensor for Al3+, Fe3+, Cr3+ and Hg2+ ions detection was developed. |
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