N-doped carbon dots for highly sensitive and selective sensing of copper ion and sulfide anion in lake water

Ge, Jia; Shen, Yanmei; Wang, Weixia; Li, Yuqing; Yang, Yu

doi:10.1016/j.jece.2021.105081

Cited by 45 publications

(8 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, to date, CDs have not been studied for sulfide removal from industrial effluents. Instead, there have been many reports on the quantification of S 2− and sulfide compounds using CDs as detection probes [ 16 , 17 , 18 ]. For instance, CD/AgI hybrid probes were fabricated using citric acid as a precursor, enabling the measurement of the S 2− concentration in a range of 1~10 μM.…”

Section: Introductionmentioning

confidence: 99%

Removal of Sulfide Ions from Kraft Washing Effluents by Photocatalysis with N and Fe Codoped Carbon Dots

Luo

Líu

Sun³

2023

Polymers

View full text Add to dashboard Cite

N and Fe codoped carbon dots (N,Fe-CDs) were fabricated from citric acid, L-glutamic acid and ferric chloride via a hydrothermal method for the photocatalytic removal of S2− from kraft washing effluents (KWE). The N,Fe-CDs were fluorescent nanoparticles (average size of 3.18 nm) and catalyzed the oxidation of S2− following a first-order kinetic model with an activation energy of 33.77 kJ/mol. The N,Fe-CDs tolerated elevated temperatures as high as 80 °C without catalyst deactivation. The N,Fe-CDs catalysts were reusable for at least four cycles, preserving over 90% of the activity. In the treatment of KWE from the kraft pulping of eucalyptus, the concentration of S2− was decreased by the N,Fe-CDs from 1.19 to 0.41 mmol/L in 6 h. Consequently, near complete remediation was obtained in 24 h. In addition, half of the chemical oxygen demand was removed after treatment with 500 mg/L of the N,Fe-CDs. In addition, the present photocatalyst was safe within a concentration of 200 mg/L, as indicated by the acetylcholinesterase inhibition test. Our findings may help develop a cleaner production process for kraft brownstock washing.

show abstract

Section: Introductionmentioning

confidence: 99%

Removal of Sulfide Ions from Kraft Washing Effluents by Photocatalysis with N and Fe Codoped Carbon Dots

Luo

Líu

Sun³

2023

Polymers

View full text Add to dashboard Cite

show abstract

“…Fluorescence methods are now widely employed for sensing heavy metal ions due to their quick reaction, operational simplicity, cost-efficiency, and excellent sensitivity and selectivity. 29…”

Section: Introductionmentioning

confidence: 99%

Synthesis of fluorescent boron carbon nitride nanosheets for the detection of Cu²⁺ ions and epinephrine

2023

View full text Add to dashboard Cite

show abstract

“…It is widely known that the carbon cores and surface structure of CDs are highly related to their optical properties and detection capability [ 5 , 26 , 27 , 28 ]. Thus, as a popular modification approach, the heteroatom doping on the surface of the functional groups of CDs can be further used to tune the emissive properties and thus improve the quantum yield (QY), such as nitrogen (N), fluorine (F), sulfur (S), phosphorus (P), silicon (Si) and boron (B) [ 29 , 30 , 31 , 32 , 33 , 34 , 35 ]. For example, N-doped CDs were successfully constructed using a solvothermal approach for the early detection of Fe 3+ during iron corrosion in a NaCl solution.…”

Section: Introductionmentioning

confidence: 99%

One-Step Synthesis of Nitrogen/Fluorine Co-Doped Carbon Dots for Use in Ferric Ions and Ascorbic Acid Detection

et al. 2022

View full text Add to dashboard Cite

Carbon dots (CDs) have caught enormous attention owing to their distinctive properties, such as their high water solubility, tunable optical properties, and easy surface modification, which can be generally used for the detection of heavy metals and organic pollutants. Herein, nitrogen and fluorine co-doped carbon dots (NFCDs) were designed via a rapid, low-cost, and one-step microwave-assisted technique using DL-malic acid and levofloxacin. The NFCDs emitted intense green fluorescence under UV lighting, and the optical emission peak at 490 nm was observed upon a 280 nm excitation, with a high quantum yield of 21.03%. Interestingly, the spectral measurements illustrated excitation-independent and concentration-independent single-color fluorescence owing to the presence of nitrogen and fluorine elements in the surface functional groups. Additionally, the NFCDs were applied for the selective detection of Fe3+ and ascorbic acid based on the “turn-off” mode. The detection limits were determined as 1.03 and 4.22 µM, respectively. The quenching mechanisms were explored using the static quenching mechanism and the inner filter effect. Therefore, a NFCDs fluorescent probe with single color emission was successfully developed for the convenient and rapid detection of Fe3+ and ascorbic acid in environments.

show abstract

N-doped carbon dots for highly sensitive and selective sensing of copper ion and sulfide anion in lake water

Cited by 45 publications

References 50 publications

Removal of Sulfide Ions from Kraft Washing Effluents by Photocatalysis with N and Fe Codoped Carbon Dots

Removal of Sulfide Ions from Kraft Washing Effluents by Photocatalysis with N and Fe Codoped Carbon Dots

Synthesis of fluorescent boron carbon nitride nanosheets for the detection of Cu²⁺ ions and epinephrine

One-Step Synthesis of Nitrogen/Fluorine Co-Doped Carbon Dots for Use in Ferric Ions and Ascorbic Acid Detection

Contact Info

Product

Resources

About

N-doped carbon dots for highly sensitive and selective sensing of copper ion and sulfide anion in lake water

Cited by 45 publications

References 50 publications

Removal of Sulfide Ions from Kraft Washing Effluents by Photocatalysis with N and Fe Codoped Carbon Dots

Removal of Sulfide Ions from Kraft Washing Effluents by Photocatalysis with N and Fe Codoped Carbon Dots

Synthesis of fluorescent boron carbon nitride nanosheets for the detection of Cu2+ ions and epinephrine

One-Step Synthesis of Nitrogen/Fluorine Co-Doped Carbon Dots for Use in Ferric Ions and Ascorbic Acid Detection

Contact Info

Product

Resources

About

Synthesis of fluorescent boron carbon nitride nanosheets for the detection of Cu²⁺ ions and epinephrine