A Novel Turn-On Fluorescent Sensor Based on Sulfur Quantum Dots and MnO<sub>2</sub> Nanosheet Architectures for Detection of Hydrazine
In this paper, the SQDs@MnO<sub>2</sub> NS as the probe was applied to construct a novel “turn-on” fluorescent sensor for sensitive and selective detection of hydrazine (N<sub>2</sub>H<sub>4</sub>). Sulfur quantum dots (SQDs) and MnO<sub>2</sub> nanosh...
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| Format: | Article |
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MDPI AG
2022-06-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/13/2207 |
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| author | Xin Li Xiaobin Wang Wei Guo Feng Luan Chunyuan Tian Xuming Zhuang Lijun Zhao |
| author_facet | Xin Li Xiaobin Wang Wei Guo Feng Luan Chunyuan Tian Xuming Zhuang Lijun Zhao |
| author_sort | Xin Li |
| collection | DOAJ |
| description | In this paper, the SQDs@MnO<sub>2</sub> NS as the probe was applied to construct a novel “turn-on” fluorescent sensor for sensitive and selective detection of hydrazine (N<sub>2</sub>H<sub>4</sub>). Sulfur quantum dots (SQDs) and MnO<sub>2</sub> nanosheets (MnO<sub>2</sub> NS) were simply mixed, through the process of adsorption to prepare the architectures of SQDs@MnO<sub>2</sub> NS. The fluorescent emissions of SQDs@MnO<sub>2</sub> NS play a key role to indicate the state of the sensor. According to the inner filter effect (IFE) mechanism, the state of the sensor at the “off” position, or low emission, under the presence of MnO<sub>2</sub> NS, is which the ultraviolet and visible spectrum overlaps with the fluorescence emission spectrum of SQDs. Under the optimal conditions, the emission was gradually recovered with the addition of the N<sub>2</sub>H<sub>4</sub>, since the N<sub>2</sub>H<sub>4</sub> as a strong reductant could make the MnO<sub>2</sub> NS converted into Mn<sup>2+</sup>, the state of the sensor at the “on”. Meanwhile, the fluorescent sensor possesses good selectivity and high sensitivity, and the detection concentration of N<sub>2</sub>H<sub>4</sub> with a wide range from 0.1 µM to 10 mM with a detection limit of 0.072 µM. Furthermore, actual samples were successful in detecting certain implications, indicating that the fluorescent sensor possesses the potential application ability to monitor the N<sub>2</sub>H<sub>4</sub> in the water. |
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| language | English |
| last_indexed | 2024-03-09T04:00:45Z |
| publishDate | 2022-06-01 |
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| series | Nanomaterials |
| spelling | doaj.art-be1bef4af2de445b910e16811975a6f72023-12-03T14:14:53ZengMDPI AGNanomaterials2079-49912022-06-011213220710.3390/nano12132207A Novel Turn-On Fluorescent Sensor Based on Sulfur Quantum Dots and MnO<sub>2</sub> Nanosheet Architectures for Detection of HydrazineXin Li0Xiaobin Wang1Wei Guo2Feng Luan3Chunyuan Tian4Xuming Zhuang5Lijun Zhao6College of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, ChinaCollege of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, ChinaShandong Dyne Marine Biopharmaceutical Co., Ltd., Weihai 264300, ChinaCollege of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, ChinaCollege of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, ChinaCollege of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, ChinaCollege of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, ChinaIn this paper, the SQDs@MnO<sub>2</sub> NS as the probe was applied to construct a novel “turn-on” fluorescent sensor for sensitive and selective detection of hydrazine (N<sub>2</sub>H<sub>4</sub>). Sulfur quantum dots (SQDs) and MnO<sub>2</sub> nanosheets (MnO<sub>2</sub> NS) were simply mixed, through the process of adsorption to prepare the architectures of SQDs@MnO<sub>2</sub> NS. The fluorescent emissions of SQDs@MnO<sub>2</sub> NS play a key role to indicate the state of the sensor. According to the inner filter effect (IFE) mechanism, the state of the sensor at the “off” position, or low emission, under the presence of MnO<sub>2</sub> NS, is which the ultraviolet and visible spectrum overlaps with the fluorescence emission spectrum of SQDs. Under the optimal conditions, the emission was gradually recovered with the addition of the N<sub>2</sub>H<sub>4</sub>, since the N<sub>2</sub>H<sub>4</sub> as a strong reductant could make the MnO<sub>2</sub> NS converted into Mn<sup>2+</sup>, the state of the sensor at the “on”. Meanwhile, the fluorescent sensor possesses good selectivity and high sensitivity, and the detection concentration of N<sub>2</sub>H<sub>4</sub> with a wide range from 0.1 µM to 10 mM with a detection limit of 0.072 µM. Furthermore, actual samples were successful in detecting certain implications, indicating that the fluorescent sensor possesses the potential application ability to monitor the N<sub>2</sub>H<sub>4</sub> in the water.https://www.mdpi.com/2079-4991/12/13/2207sulfur quantum dotsMnO<sub>2</sub> nanosheethydrazinefluorescence probe |
| spellingShingle | Xin Li Xiaobin Wang Wei Guo Feng Luan Chunyuan Tian Xuming Zhuang Lijun Zhao A Novel Turn-On Fluorescent Sensor Based on Sulfur Quantum Dots and MnO<sub>2</sub> Nanosheet Architectures for Detection of Hydrazine Nanomaterials sulfur quantum dots MnO<sub>2</sub> nanosheet hydrazine fluorescence probe |
| title | A Novel Turn-On Fluorescent Sensor Based on Sulfur Quantum Dots and MnO<sub>2</sub> Nanosheet Architectures for Detection of Hydrazine |
| title_full | A Novel Turn-On Fluorescent Sensor Based on Sulfur Quantum Dots and MnO<sub>2</sub> Nanosheet Architectures for Detection of Hydrazine |
| title_fullStr | A Novel Turn-On Fluorescent Sensor Based on Sulfur Quantum Dots and MnO<sub>2</sub> Nanosheet Architectures for Detection of Hydrazine |
| title_full_unstemmed | A Novel Turn-On Fluorescent Sensor Based on Sulfur Quantum Dots and MnO<sub>2</sub> Nanosheet Architectures for Detection of Hydrazine |
| title_short | A Novel Turn-On Fluorescent Sensor Based on Sulfur Quantum Dots and MnO<sub>2</sub> Nanosheet Architectures for Detection of Hydrazine |
| title_sort | novel turn on fluorescent sensor based on sulfur quantum dots and mno sub 2 sub nanosheet architectures for detection of hydrazine |
| topic | sulfur quantum dots MnO<sub>2</sub> nanosheet hydrazine fluorescence probe |
| url | https://www.mdpi.com/2079-4991/12/13/2207 |
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