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| Effective detection of malachite green by folic acid stabilized silver nanoclusters |
| Author Name | Affiliation | E-mail | | CAI Zhifeng | College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China | caizhifeng15@mails.ucas.ac.cn | | WU Ying | College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China | ceyingwu@126.com | | LI Yanan | College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China | | | MENG Guiyu | College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China | | | MIAO Tianyu | College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China | | | ZHANG Yihao | College of Chemistry and Materials, Taiyuan Normal University, Jinzhong, Shanxi 030619, China | |
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| Abstract: Herein, a one-pot chemical reduction method was reported to prepare folic acid (FA)-stabilized silver nanoclusters (FA@Ag NCs), in which FA, hydrazine hydrate, and silver nitrate were used as capping agent, reducing agent, and precursor, respectively. Several technologies were employed to investigate the structures and optical properties of FA@Ag NCs, including transmission electron microscopy (TEM), X ray photoelectron spectrometer (XPS), Fourier transform infrared spectrometer (FTIR), X-ray diffractometer (XRD), fluorescence spectrometer, and ultraviolet visible absorption spectrometer. FA@Ag NCs were suggested to be highly dispersed and spherical with a size of around 2.8 nm. Moreover, the maximum excitation and emission wavelengths of FA@Ag NCs were 370 and 447 nm, respectively. Under the optimal detection conditions, FA@Ag NCs could be used to effectively detect malachite green with the linear detection range of 0.5-200 μmol·L-1. The detection limit was 0.084 μmol·L-1. The fluorescence-quenching mechanism was ascribed to the static quenching. The detection system based on FA@Ag NCs was successfully used for the detection of malachite green in actual samples with good accuracy and reproducibility. |
| Keywords: fluorescence probe silver nanoclusters folic acid malachite green static quenching |
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| CAI Zhifeng,WU Ying,LI Yanan,MENG Guiyu,MIAO Tianyu,ZHANG Yihao.Effective detection of malachite green by folic acid stabilized silver nanoclusters[J].Chinese Journal of Inorganic Chemistry,2025,41(5):983-993. |
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