Ultrasensitive label-free ratiometric colorimetric sensor for free chlorine detection in tap water based on a novel brilliant blue-Au NCs
In this work, Au nanoclusters was prepared under the guidance of a synthetic colorant brilliant blue (BB-Au NCs). The microstructure and crystal structure of the resulting products were characterized by transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The absorbance...
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Elsevier
2025-06-01
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| Series: | Sensing and Bio-Sensing Research |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214180425000510 |
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| author | Dongning Li Yanli Liu Xin Xu Wenfang Sun Haiping Ni Xiangping Liu |
| author_facet | Dongning Li Yanli Liu Xin Xu Wenfang Sun Haiping Ni Xiangping Liu |
| author_sort | Dongning Li |
| collection | DOAJ |
| description | In this work, Au nanoclusters was prepared under the guidance of a synthetic colorant brilliant blue (BB-Au NCs). The microstructure and crystal structure of the resulting products were characterized by transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The absorbance of BB-Au NCs at 247 nm was enhanced while the absorbance at 308 and 630 nm was reduced by free chlorine, an unavoidable and ubiquitous disinfection byproduct. The optical properties of BB-Au NCs and the influence of free chlorine were analyzed using computational chemistry methods based on density functional theory (DFT). The ratio of absorbance of BB-Au NCs at 247 and 630 nm was used for accurate quantitative determination of free chlorine in a range from 5 to 50 μM, with the detection limit is 1 μM. This method demonstrates potential application for simple and environmentally friendly detection of free chlorine in water samples. |
| format | Article |
| id | doaj-art-77bb8281e46a4f92a22419fce94704f1 |
| institution | DOAJ |
| issn | 2214-1804 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Sensing and Bio-Sensing Research |
| spelling | doaj-art-77bb8281e46a4f92a22419fce94704f12025-08-20T03:21:01ZengElsevierSensing and Bio-Sensing Research2214-18042025-06-014810078510.1016/j.sbsr.2025.100785Ultrasensitive label-free ratiometric colorimetric sensor for free chlorine detection in tap water based on a novel brilliant blue-Au NCsDongning Li0Yanli Liu1Xin Xu2Wenfang Sun3Haiping Ni4Xiangping Liu5Nanjing Municipal Key Laboratory for Public Health Laboratory Technology, Nanjing Municipal Center for Disease Control and Preventio, Jiangsu, Nanjing 210003, China; Corresponding authors.Department of Pharmacy, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Jiangsu, Nanjing 210003, ChinaNanjing Municipal Key Laboratory for Public Health Laboratory Technology, Nanjing Municipal Center for Disease Control and Preventio, Jiangsu, Nanjing 210003, ChinaNanjing Municipal Key Laboratory for Public Health Laboratory Technology, Nanjing Municipal Center for Disease Control and Preventio, Jiangsu, Nanjing 210003, ChinaNanjing Municipal Key Laboratory for Public Health Laboratory Technology, Nanjing Municipal Center for Disease Control and Preventio, Jiangsu, Nanjing 210003, ChinaNanjing Municipal Key Laboratory for Public Health Laboratory Technology, Nanjing Municipal Center for Disease Control and Preventio, Jiangsu, Nanjing 210003, China; Corresponding authors.In this work, Au nanoclusters was prepared under the guidance of a synthetic colorant brilliant blue (BB-Au NCs). The microstructure and crystal structure of the resulting products were characterized by transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The absorbance of BB-Au NCs at 247 nm was enhanced while the absorbance at 308 and 630 nm was reduced by free chlorine, an unavoidable and ubiquitous disinfection byproduct. The optical properties of BB-Au NCs and the influence of free chlorine were analyzed using computational chemistry methods based on density functional theory (DFT). The ratio of absorbance of BB-Au NCs at 247 and 630 nm was used for accurate quantitative determination of free chlorine in a range from 5 to 50 μM, with the detection limit is 1 μM. This method demonstrates potential application for simple and environmentally friendly detection of free chlorine in water samples.http://www.sciencedirect.com/science/article/pii/S2214180425000510Brilliant blueAu nanoclustersFree chlorine detectionRatio colorimetricMolecular computation |
| spellingShingle | Dongning Li Yanli Liu Xin Xu Wenfang Sun Haiping Ni Xiangping Liu Ultrasensitive label-free ratiometric colorimetric sensor for free chlorine detection in tap water based on a novel brilliant blue-Au NCs Sensing and Bio-Sensing Research Brilliant blue Au nanoclusters Free chlorine detection Ratio colorimetric Molecular computation |
| title | Ultrasensitive label-free ratiometric colorimetric sensor for free chlorine detection in tap water based on a novel brilliant blue-Au NCs |
| title_full | Ultrasensitive label-free ratiometric colorimetric sensor for free chlorine detection in tap water based on a novel brilliant blue-Au NCs |
| title_fullStr | Ultrasensitive label-free ratiometric colorimetric sensor for free chlorine detection in tap water based on a novel brilliant blue-Au NCs |
| title_full_unstemmed | Ultrasensitive label-free ratiometric colorimetric sensor for free chlorine detection in tap water based on a novel brilliant blue-Au NCs |
| title_short | Ultrasensitive label-free ratiometric colorimetric sensor for free chlorine detection in tap water based on a novel brilliant blue-Au NCs |
| title_sort | ultrasensitive label free ratiometric colorimetric sensor for free chlorine detection in tap water based on a novel brilliant blue au ncs |
| topic | Brilliant blue Au nanoclusters Free chlorine detection Ratio colorimetric Molecular computation |
| url | http://www.sciencedirect.com/science/article/pii/S2214180425000510 |
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