Fluorescent N/Al co-doped carbon dots from cellulose biomass for sensitive detection of manganese (VII)
Development of metallic and nonmetallic heteroatom doped carbon dots have gained attention due to their enhanced physicochemical and photoluminescence properties. In this study, a facile one pot hydrothermal carbonisation approach was taken to synthesise nitrogen, aluminum co-doped carbon dots (N/Al...
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| Format: | Journal Article |
| Language: | English |
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2021
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| Online Access: | https://hdl.handle.net/10356/146935 |
| _version_ | 1826117550273986560 |
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| author | Jayaweera, Supuli Yin, Ke Hu, Xiao Ng, Wun Jern |
| author2 | Interdisciplinary Graduate School (IGS) |
| author_facet | Interdisciplinary Graduate School (IGS) Jayaweera, Supuli Yin, Ke Hu, Xiao Ng, Wun Jern |
| author_sort | Jayaweera, Supuli |
| collection | NTU |
| description | Development of metallic and nonmetallic heteroatom doped carbon dots have gained attention due to their enhanced physicochemical and photoluminescence properties. In this study, a facile one pot hydrothermal carbonisation approach was taken to synthesise nitrogen, aluminum co-doped carbon dots (N/Al-CDs) with a photoluminescence quantum yield of 28.7%. Durian shell, a cellulose biomass waste, was used as the primary carbon source and compared to previously reported cellulose based carbon dots, this study presents one of the highest quantum yields. The structural and fluorescent properties of the synthesised N/Al-CDs were characterized through X-ray photoelectron spectroscopy (XPS), fluorescence spectra, and Fourier transform infrared spectroscopy (FTIR). The maximum emission was at 415 nm upon excitation at 345 nm. The synthesised N/Al-CDs were resistant to photobleaching and highly photostable within the pH, ionic strength and temperature variations investigated. The transmission electron microscopy (TEM) images showed particles were quasi-spherical and well dispersed with an average diameter of 10.0 nm. Further, the N/Al-CDs was developed as a fluorescence sensor for highly selective and sensitive detection of Mn (VII) ions. A linear relationship was developed over a concentration range of 0-100 μM while the limit of detection was 46.8 nM. Application of the sensor for detection of Manganese (VII) to two real water samples showed relative standard deviation was less than 3.9% and 1.3%, respectively. |
| first_indexed | 2024-10-01T04:29:06Z |
| format | Journal Article |
| id | ntu-10356/146935 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:29:06Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1469352021-03-15T03:03:23Z Fluorescent N/Al co-doped carbon dots from cellulose biomass for sensitive detection of manganese (VII) Jayaweera, Supuli Yin, Ke Hu, Xiao Ng, Wun Jern Interdisciplinary Graduate School (IGS) School of Materials Science and Engineering School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute Residues and Resource Reclamation Centre Environmental Chemistry and Materials Centre Engineering::Environmental engineering Carbon Dots Durian Shell Waste Development of metallic and nonmetallic heteroatom doped carbon dots have gained attention due to their enhanced physicochemical and photoluminescence properties. In this study, a facile one pot hydrothermal carbonisation approach was taken to synthesise nitrogen, aluminum co-doped carbon dots (N/Al-CDs) with a photoluminescence quantum yield of 28.7%. Durian shell, a cellulose biomass waste, was used as the primary carbon source and compared to previously reported cellulose based carbon dots, this study presents one of the highest quantum yields. The structural and fluorescent properties of the synthesised N/Al-CDs were characterized through X-ray photoelectron spectroscopy (XPS), fluorescence spectra, and Fourier transform infrared spectroscopy (FTIR). The maximum emission was at 415 nm upon excitation at 345 nm. The synthesised N/Al-CDs were resistant to photobleaching and highly photostable within the pH, ionic strength and temperature variations investigated. The transmission electron microscopy (TEM) images showed particles were quasi-spherical and well dispersed with an average diameter of 10.0 nm. Further, the N/Al-CDs was developed as a fluorescence sensor for highly selective and sensitive detection of Mn (VII) ions. A linear relationship was developed over a concentration range of 0-100 μM while the limit of detection was 46.8 nM. Application of the sensor for detection of Manganese (VII) to two real water samples showed relative standard deviation was less than 3.9% and 1.3%, respectively. Nanyang Technological University The authors would like to thank the Interdisciplinary Graduate School of Nanyang Technological University and Nanyang Environment & Water Research Institute for the financial and technical support extended to this study. We would like to acknowledge Dr. Pan Chaozhi from Environmental Bio-innovations Group for the insights that improved the manuscript quality and finally the Facility for Analysis, Characterization, Testing and Simulation, Nanyang Technological University, Singapore, for use of their transmission electron microscopy facilities. 2021-03-15T03:03:23Z 2021-03-15T03:03:23Z 2019 Journal Article Jayaweera, S., Yin, K., Hu, X. & Ng, W. J. (2019). Fluorescent N/Al co-doped carbon dots from cellulose biomass for sensitive detection of manganese (VII). Journal of Fluorescence, 29(6), 1291-1300. https://dx.doi.org/10.1007/s10895-019-02452-7 1053-0509 https://hdl.handle.net/10356/146935 10.1007/s10895-019-02452-7 31707509 2-s2.0-85074839396 6 29 1291 1300 en Journal of Fluorescence © 2019 Springer Science+Business Media, LLC, part of Springer Nature. All rights reserved. |
| spellingShingle | Engineering::Environmental engineering Carbon Dots Durian Shell Waste Jayaweera, Supuli Yin, Ke Hu, Xiao Ng, Wun Jern Fluorescent N/Al co-doped carbon dots from cellulose biomass for sensitive detection of manganese (VII) |
| title | Fluorescent N/Al co-doped carbon dots from cellulose biomass for sensitive detection of manganese (VII) |
| title_full | Fluorescent N/Al co-doped carbon dots from cellulose biomass for sensitive detection of manganese (VII) |
| title_fullStr | Fluorescent N/Al co-doped carbon dots from cellulose biomass for sensitive detection of manganese (VII) |
| title_full_unstemmed | Fluorescent N/Al co-doped carbon dots from cellulose biomass for sensitive detection of manganese (VII) |
| title_short | Fluorescent N/Al co-doped carbon dots from cellulose biomass for sensitive detection of manganese (VII) |
| title_sort | fluorescent n al co doped carbon dots from cellulose biomass for sensitive detection of manganese vii |
| topic | Engineering::Environmental engineering Carbon Dots Durian Shell Waste |
| url | https://hdl.handle.net/10356/146935 |
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