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Sonaimuthu M, Ganesan S, Anand S, Kumar AJ, Palanisamy S, You S, Velsankar K, Sudhahar S, Lo HM, Lee YR. Multiple heteroatom dopant carbon dots as a novel photoluminescent probe for the sensitive detection of Cu 2+ and Fe 3+ ions in living cells and environmental sample analysis. Environ Res 2023; 219:115106. [PMID: 36574795 DOI: 10.1016/j.envres.2022.115106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/13/2022] [Accepted: 12/17/2022] [Indexed: 06/17/2023]
Abstract
Heavy metal ion pollution harms human health and the environment and continues to worsen. Here, we report the synthesis of boron (B), phosphorous (P), nitrogen (N), and sulfur (S) co-doped carbon dots (BP/NS-CDs) by a one-step facile hydrothermal process. The optimum synthetic parameters are of 180 °C temperature, 12 h reaction time and 15% of PBA mass. The as-synthesized BP/NS-CDs exhibits excellent water solubility, strong green photoluminescence (PL) at 510 nm, and a high quantum yield of 22.4%. Moreover, BP/NS-CDs presented high monodispersity (7.2 ± 0.45 nm), excitation-dependent emission, PL stability over large pH, and high ionic strength. FTIR, XRD, and XPS are used to confirm the successful B and P doping of BP/NS-CDs. BP/NS-CD photoluminescent probes are selectively quenched by Cu2+ and Fe3+ ions but showed no response to the presence of other metal cations. The PL emission of BP/NS-CDs exhibited a good linear correlation with Cu2+ and Fe3+ concentrations with detection limits of 0.18 μM and 0.27 μM for Cu2+ and Fe3+, respectively. Furthermore, the HCT116 survival cells kept at 99.4 ± 1.3% and cell imaging capability, when the BP/NS-CDs concentration is up to 300 μg/mL by MTT assay. The proposed sensor is potential applications for the detection of Cu2+ and Fe3+ ions in environmental water samples.
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Affiliation(s)
- Mohandoss Sonaimuthu
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
| | - Sivarasan Ganesan
- Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung, 41349, Taiwan
| | - Singaravelu Anand
- Department of Chemistry, Saveetha Engineering College, Chennai, 602105, Tamilnadu, India
| | | | - Subramanian Palanisamy
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, 120 Gangneungdaehangno, Gangneung, Gangwon, 25457, Republic of Korea
| | - SangGuan You
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, 120 Gangneungdaehangno, Gangneung, Gangwon, 25457, Republic of Korea
| | - K Velsankar
- Department of Physics, Alagappa University, Karikudi, 630003, Tamilnadu, India
| | | | - Huang-Mu Lo
- Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung, 41349, Taiwan.
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
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