{"title":"提取自山竹皮的掺氮碳点用于检测 Cr2O72- 和香兰素","authors":"","doi":"10.1016/j.jphotochem.2024.115945","DOIUrl":null,"url":null,"abstract":"<div><p>Nitrogen-doped biomass carbon dots (MP-NCDs) based on mangosteen peel were prepared by one-step hydrothermal method. Transmission electron microscopy demonstrated that MP-NCDs were spherical and their particle size ranged from 2.6 to 5.0 nm. X-ray photoelectron spectroscopy indicated that they were composed of C, N, and O elements. Fourier transform infrared revealed that their surface was equipped with oxygen-containing and amino-containing groups. Bright blue light emission characteristics were demonstrated. They had high light stability in aqueous solution and salt solution. Furthermore, MP-NCDs could be utilized as a bifunctional fluorescent probe for detecting Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> and vanillin through the fluorescence quenching method, which exhibited high selectivity, sensitivity, and anti-interference performance. The detection limits of vanillin and Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> by MP-NCDs were determined to be 2.33 μM and 4.6 μM, respectively. A detailed analysis was conducted on the fluorescence quenching mechanism. The performance of the sensing system was tested in real samples using river water and infant formula as models.</p></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":null,"pages":null},"PeriodicalIF":4.1000,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1010603024004891/pdfft?md5=e2939dd7cd0d7698cf71134d9be07ede&pid=1-s2.0-S1010603024004891-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Nitrogen-doped carbon dots derived from mangosteen peel for the detection of Cr2O72− and vanillin\",\"authors\":\"\",\"doi\":\"10.1016/j.jphotochem.2024.115945\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Nitrogen-doped biomass carbon dots (MP-NCDs) based on mangosteen peel were prepared by one-step hydrothermal method. Transmission electron microscopy demonstrated that MP-NCDs were spherical and their particle size ranged from 2.6 to 5.0 nm. X-ray photoelectron spectroscopy indicated that they were composed of C, N, and O elements. Fourier transform infrared revealed that their surface was equipped with oxygen-containing and amino-containing groups. Bright blue light emission characteristics were demonstrated. They had high light stability in aqueous solution and salt solution. Furthermore, MP-NCDs could be utilized as a bifunctional fluorescent probe for detecting Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> and vanillin through the fluorescence quenching method, which exhibited high selectivity, sensitivity, and anti-interference performance. The detection limits of vanillin and Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> by MP-NCDs were determined to be 2.33 μM and 4.6 μM, respectively. A detailed analysis was conducted on the fluorescence quenching mechanism. The performance of the sensing system was tested in real samples using river water and infant formula as models.</p></div>\",\"PeriodicalId\":16782,\"journal\":{\"name\":\"Journal of Photochemistry and Photobiology A-chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.1000,\"publicationDate\":\"2024-08-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S1010603024004891/pdfft?md5=e2939dd7cd0d7698cf71134d9be07ede&pid=1-s2.0-S1010603024004891-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Photochemistry and Photobiology A-chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1010603024004891\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Photochemistry and Photobiology A-chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1010603024004891","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Nitrogen-doped carbon dots derived from mangosteen peel for the detection of Cr2O72− and vanillin
Nitrogen-doped biomass carbon dots (MP-NCDs) based on mangosteen peel were prepared by one-step hydrothermal method. Transmission electron microscopy demonstrated that MP-NCDs were spherical and their particle size ranged from 2.6 to 5.0 nm. X-ray photoelectron spectroscopy indicated that they were composed of C, N, and O elements. Fourier transform infrared revealed that their surface was equipped with oxygen-containing and amino-containing groups. Bright blue light emission characteristics were demonstrated. They had high light stability in aqueous solution and salt solution. Furthermore, MP-NCDs could be utilized as a bifunctional fluorescent probe for detecting Cr2O72− and vanillin through the fluorescence quenching method, which exhibited high selectivity, sensitivity, and anti-interference performance. The detection limits of vanillin and Cr2O72− by MP-NCDs were determined to be 2.33 μM and 4.6 μM, respectively. A detailed analysis was conducted on the fluorescence quenching mechanism. The performance of the sensing system was tested in real samples using river water and infant formula as models.
期刊介绍：
JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds.
All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor).
The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.
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