Natural Nitrogen-Doped Carbon Dots Obtained from Hydrothermal Carbonization of Chebulic Myrobalan and Their Sensing Ability toward Heavy Metal Ions Article Swipe

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Raji Atchudan , Suguna Perumal , Thomas Nesakumar Jebakumar Immanuel Edison , Ashok K. Sundramoorthy , Rajangam Vinodh , Sambasivam Sangaraju , Somasundaram Chandra Kishore , Yong Rok Lee ·

YOU? · · 2023 · Open Access · · DOI: https://doi.org/10.3390/s23020787

Chebulic Myrobalan is the main ingredient in the Ayurvedic formulation Triphala, which is used for kidney and liver dysfunctions. Herein, natural nitrogen-doped carbon dots (NN-CDs) were prepared from the hydrothermal carbonization of Chebulic Myrobalan and were demonstrated to sense heavy metal ions in an aqueous medium. Briefly, the NN-CDs were developed from Chebulic Myrobalan by a single-step hydrothermal carbonization approach under a mild temperature (200 °C) without any capping and passivation agents. They were then thoroughly characterized to confirm their structural and optical properties. The resulting NN-CDs had small particles (average diameter: 2.5 ± 0.5 nm) with a narrow size distribution (1–4 nm) and a relatable degree of graphitization. They possessed bright and durable fluorescence with excitation-dependent emission behaviors. Further, the as-synthesized NN-CDs were a good fluorometric sensor for the detection of heavy metal ions in an aqueous medium. The NN-CDs showed sensitive and selective sensing platforms for Fe3+ ions; the detection limit was calculated to be 0.86 μM in the dynamic range of 5–25 μM of the ferric (Fe3+) ion concentration. Moreover, these NN-CDs could expand their application as a potential candidate for biomedical applications and offer a new method of hydrothermally carbonizing waste biomass.

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Potassium Ferricyanide

Scanning Electron Microscope

Concepts

Carbonization Hydrothermal carbonization Metal ions in aqueous solution Carbon fibers Materials science Aqueous solution Hydrothermal circulation Fluorescence Ferric Metal Ion Nuclear chemistry Inorganic chemistry Chemical engineering Chemistry Scanning electron microscope Metallurgy Physical chemistry Organic chemistry Composite material Composite number Quantum mechanics Engineering Physics

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Type: article
Language: en
Landing Page: https://doi.org/10.3390/s23020787
PDF: https://www.mdpi.com/1424-8220/23/2/787/pdf?version=1673345271
OA Status: gold
Cited By: 52
References: 68
Related Works: 10
OpenAlex ID: https://openalex.org/W4315572629

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DOI: https://doi.org/10.3390/s23020787

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Title: Natural Nitrogen-Doped Carbon Dots Obtained from Hydrothermal Carbonization of Chebulic Myrobalan and Their Sensing Ability toward Heavy Metal Ions

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Language: en

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Publication year: 2023

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Publication date: 2023-01-10

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Authors: Raji Atchudan, Suguna Perumal, Thomas Nesakumar Jebakumar Immanuel Edison, Ashok K. Sundramoorthy, Rajangam Vinodh, Sambasivam Sangaraju, Somasundaram Chandra Kishore, Yong Rok Lee

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Landing page: https://doi.org/10.3390/s23020787

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Concepts: Carbonization, Hydrothermal carbonization, Metal ions in aqueous solution, Carbon fibers, Materials science, Aqueous solution, Hydrothermal circulation, Fluorescence, Ferric, Metal, Ion, Nuclear chemistry, Inorganic chemistry, Chemical engineering, Chemistry, Scanning electron microscope, Metallurgy, Physical chemistry, Organic chemistry, Composite material, Composite number, Quantum mechanics, Engineering, Physics

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Cited by: 52

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