Simultaneous Preparation of Pu-erh Tea-selenium-doped Carbon Quantum Dots and Elemental Selenium and Its Application in Fe3+ Detection
Object: To prepare Pu-erh tea nano-selenium doped carbon quantum dots (PT-Se-CQDs) for the rapid detection of Fe3+ in the water system and to profile their characteristics. Method: In this study, PT-Se-CQDs and elemental selenium were prepared simultaneously in a water-bath by optimizing the reactio...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | zho |
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The editorial department of Science and Technology of Food Industry
2023-02-01
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| Series: | Shipin gongye ke-ji |
| Subjects: | |
| Online Access: | http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2022040270 |
| _version_ | 1797951319290413056 |
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| author | Weiying HU Xiguang YE Zhongzheng CHEN Yuanyuan ZHANG Xiangrong YAO Xiaorong LIN Bin LI |
| author_facet | Weiying HU Xiguang YE Zhongzheng CHEN Yuanyuan ZHANG Xiangrong YAO Xiaorong LIN Bin LI |
| author_sort | Weiying HU |
| collection | DOAJ |
| description | Object: To prepare Pu-erh tea nano-selenium doped carbon quantum dots (PT-Se-CQDs) for the rapid detection of Fe3+ in the water system and to profile their characteristics. Method: In this study, PT-Se-CQDs and elemental selenium were prepared simultaneously in a water-bath by optimizing the reaction temperature and time. The ultraviolet-visible absorption and fluorescent intensity of PT-Se-CQDs were subsequently analyzed by the ultraviolet-visible absorption spectroscopy and fluorescence spectroscopy. And their morphology, elemental composition, and structural characteristics were characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction, respectively. On this basis, a novel fluorescence sensor for the detection of Fe3+ in the aqueous system was constructed using PT-Se-CQDs. Result: PT-Se-CQDs in a spherical shape with a quantum yield of 3.41%, an average particle size of about 3.1 nm as well as elemental selenium were successfully prepared simultaneously via the reaction in a boiling water bath at 100 °C for 10 h. In addition, a strong static fluorescence quenching effect on PT-Se-CQDs was observed in the presence of Fe3+. Accordingly, Fe3+ in the range of 0~300 μmol/L was successfully detected using PT-Se-CQDs as a fluorescence sensor with a good linear relationship between the concentration of Fe3+ and the ratio of fluorescence intensity (F/F0) of PT-Se-CQDs (R2>0.99) and a limit of detection of 0.2621 μmol/L. When this method was applied to detect Fe3+ in real water samples, satisfactory standard recovery rates of Fe3+ in pure water and mineral water of 90.93%~104.56% and 84.53%~113.90% with the RSD less than 8.15% and 4.00% were obtained, respectively. Conclusion: The preparation of PT-Se-CQDs with high selectivity and sensitivity to Fe3+ and their application as a new fluorescence sensor for the detection of Fe3+ in aqueous systems with simple operation and fast response were explored in the present study. |
| first_indexed | 2024-04-10T22:28:40Z |
| format | Article |
| id | doaj.art-8584b685cb0445d1bae7b27677a2de1c |
| institution | Directory Open Access Journal |
| issn | 1002-0306 |
| language | zho |
| last_indexed | 2024-04-10T22:28:40Z |
| publishDate | 2023-02-01 |
| publisher | The editorial department of Science and Technology of Food Industry |
| record_format | Article |
| series | Shipin gongye ke-ji |
| spelling | doaj.art-8584b685cb0445d1bae7b27677a2de1c2023-01-17T08:07:44ZzhoThe editorial department of Science and Technology of Food IndustryShipin gongye ke-ji1002-03062023-02-0144331632410.13386/j.issn1002-0306.20220402702022040270-3Simultaneous Preparation of Pu-erh Tea-selenium-doped Carbon Quantum Dots and Elemental Selenium and Its Application in Fe3+ DetectionWeiying HU0Xiguang YE1Zhongzheng CHEN2Yuanyuan ZHANG3Xiangrong YAO4Xiaorong LIN5Bin LI6College of Food Science, South China Agricultural University, Guangzhou 510642, ChinaCollege of Food Science, South China Agricultural University, Guangzhou 510642, ChinaCollege of Food Science, South China Agricultural University, Guangzhou 510642, ChinaCollege of Food Science, South China Agricultural University, Guangzhou 510642, ChinaCollege of Food Science, South China Agricultural University, Guangzhou 510642, ChinaCollege of Food Science, South China Agricultural University, Guangzhou 510642, ChinaCollege of Food Science, South China Agricultural University, Guangzhou 510642, ChinaObject: To prepare Pu-erh tea nano-selenium doped carbon quantum dots (PT-Se-CQDs) for the rapid detection of Fe3+ in the water system and to profile their characteristics. Method: In this study, PT-Se-CQDs and elemental selenium were prepared simultaneously in a water-bath by optimizing the reaction temperature and time. The ultraviolet-visible absorption and fluorescent intensity of PT-Se-CQDs were subsequently analyzed by the ultraviolet-visible absorption spectroscopy and fluorescence spectroscopy. And their morphology, elemental composition, and structural characteristics were characterized by transmission electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction, respectively. On this basis, a novel fluorescence sensor for the detection of Fe3+ in the aqueous system was constructed using PT-Se-CQDs. Result: PT-Se-CQDs in a spherical shape with a quantum yield of 3.41%, an average particle size of about 3.1 nm as well as elemental selenium were successfully prepared simultaneously via the reaction in a boiling water bath at 100 °C for 10 h. In addition, a strong static fluorescence quenching effect on PT-Se-CQDs was observed in the presence of Fe3+. Accordingly, Fe3+ in the range of 0~300 μmol/L was successfully detected using PT-Se-CQDs as a fluorescence sensor with a good linear relationship between the concentration of Fe3+ and the ratio of fluorescence intensity (F/F0) of PT-Se-CQDs (R2>0.99) and a limit of detection of 0.2621 μmol/L. When this method was applied to detect Fe3+ in real water samples, satisfactory standard recovery rates of Fe3+ in pure water and mineral water of 90.93%~104.56% and 84.53%~113.90% with the RSD less than 8.15% and 4.00% were obtained, respectively. Conclusion: The preparation of PT-Se-CQDs with high selectivity and sensitivity to Fe3+ and their application as a new fluorescence sensor for the detection of Fe3+ in aqueous systems with simple operation and fast response were explored in the present study.http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2022040270pu-erh tea nano-seleniumpu-erh tea nano-selenium doped carbon quantum dots (pt-se-cqds)elemental seleniumfluorescence sensorfe3+ |
| spellingShingle | Weiying HU Xiguang YE Zhongzheng CHEN Yuanyuan ZHANG Xiangrong YAO Xiaorong LIN Bin LI Simultaneous Preparation of Pu-erh Tea-selenium-doped Carbon Quantum Dots and Elemental Selenium and Its Application in Fe3+ Detection Shipin gongye ke-ji pu-erh tea nano-selenium pu-erh tea nano-selenium doped carbon quantum dots (pt-se-cqds) elemental selenium fluorescence sensor fe3+ |
| title | Simultaneous Preparation of Pu-erh Tea-selenium-doped Carbon Quantum Dots and Elemental Selenium and Its Application in Fe3+ Detection |
| title_full | Simultaneous Preparation of Pu-erh Tea-selenium-doped Carbon Quantum Dots and Elemental Selenium and Its Application in Fe3+ Detection |
| title_fullStr | Simultaneous Preparation of Pu-erh Tea-selenium-doped Carbon Quantum Dots and Elemental Selenium and Its Application in Fe3+ Detection |
| title_full_unstemmed | Simultaneous Preparation of Pu-erh Tea-selenium-doped Carbon Quantum Dots and Elemental Selenium and Its Application in Fe3+ Detection |
| title_short | Simultaneous Preparation of Pu-erh Tea-selenium-doped Carbon Quantum Dots and Elemental Selenium and Its Application in Fe3+ Detection |
| title_sort | simultaneous preparation of pu erh tea selenium doped carbon quantum dots and elemental selenium and its application in fe3 detection |
| topic | pu-erh tea nano-selenium pu-erh tea nano-selenium doped carbon quantum dots (pt-se-cqds) elemental selenium fluorescence sensor fe3+ |
| url | http://www.spgykj.com/cn/article/doi/10.13386/j.issn1002-0306.2022040270 |
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