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Grass-derived carbon nanodots as a fluorescent-sensing platform for label-free detection of Cu (II) ions

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Abstract

Herein, carbon nanodots (CNDs) were facilely synthesized using grass as a carbon source by the reflux method. The as-synthesized CNDs were well characterized by UV–Vis spectroscopy, Fluorescence spectroscopy, XRD, FTIR, and SEM. The characterization results revealed that grass-derived CNDs showed strong absorption and fluorescence emission peak and are amorphous with the surface rich in carboxyl and hydroxyl groups. The average particle size is 20 nm with a narrow size distribution. The CNDs showed excellent fluorescent sensitivity and selectivity for the detection of Cu2+ ions with a limit of detection as low as 0.89 μM with a linear detection range of 1–20 μM offering a novel sensing platform for Cu2+ ion.

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This research did not receive any specific grant or fund.

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Authors and Affiliations

  1. Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University and Collaborative Innovation Centre of Chemical Science and Engineering, Tianjin, 300072, China

    Hira Khalid

  2. Institute of Chemical Sciences, University of Peshawar, Peshawar, 25120, Pakistan

    Muhammad Farooq Khan & Ahmed Ismail

  3. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People’s Republic of China, Heilongjiang University, Harbin, 150080, China

    Bilal Ahmad, Muhammad Zahid & Ahmed Ismail

  4. College of Energy Dynamics and Mechanical Engineering, North China Electric Power University, Beijing, China

    Muhammad Ismail

  5. School of Natural Sciences, National University of Science & Technology, Islamabad, 44000, Pakistan

    Muhammad Zahid

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  1. Hira Khalid
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  2. Muhammad Farooq Khan
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  3. Bilal Ahmad
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  4. Muhammad Ismail
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Contributions

Writing—original draft preparation: HK; Formal analysis and investigation: MFK; Conceptualization and methodology: AI; Writing—review and editing: MZ; Software: BA; Resources: MI; Supervision: AI and MZ.

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Correspondence to Muhammad Zahid or Ahmed Ismail.

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Khalid, H., Khan, M.F., Ahmad, B. et al. Grass-derived carbon nanodots as a fluorescent-sensing platform for label-free detection of Cu (II) ions. J Mater Sci: Mater Electron 33, 5626–5634 (2022). https://doi.org/10.1007/s10854-022-07749-1

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  • DOI: https://doi.org/10.1007/s10854-022-07749-1

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