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• W3022632904 abstract "In this paper, N, Fe-codoped carbon dots (N, Fe-CDs) were synthesized from β -cyclodextrin, ethylenediamine, and ferric chloride for the first time using a convenient one-step hydrothermal method. The obtained N, Fe-CDs were characterized by various methods including transmission electron microscopy, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy. The N, Fe-CDs exhibited better catalytic activity than horseradish peroxidase (HRP) and caused an evident color change for 3,3<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML id=M1><mml:msup><mml:mrow /><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:math>,5,5<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML id=M2><mml:msup><mml:mrow /><mml:mrow><mml:mo>′</mml:mo></mml:mrow></mml:msup></mml:math>-tetramethylbenzidine in the presence of H 2 O 2 . Kinetic experiments show that the apparent K m value for the N, Fe-CDs with TMB (0.40 mM) or H 2 O 2 (0.35 mM) as the substrate was lower than that of HRP (0.43 and 3.70 mM), suggesting that the N, Fe-CDs have a much higher affinity for TMB and H 2 O 2 than HRP. The K m /V max value for the N, Fe-CDs (<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML id=M3><mml:mn>21.74</mml:mn><mml:mo>×</mml:mo><mml:msup><mml:mrow><mml:mn>10</mml:mn></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msup><mml:mo>·</mml:mo><mml:mtext>s</mml:mtext></mml:math> for H 2 O 2 ) is significantly lower than that for HRP (<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML id=M4><mml:mn>42.53</mml:mn><mml:mo>×</mml:mo><mml:msup><mml:mrow><mml:mn>10</mml:mn></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msup><mml:mo>·</mml:mo><mml:mtext>s</mml:mtext></mml:math>), suggesting that the N, Fe-CDs have a stronger catalytic efficiency for H 2 O 2 than HRP. Furthermore, a highly efficient and sensitive colorimetric detection method for glucose was developed using the N, Fe-CDs as mimic peroxidase to detect the hydrogen peroxide generated by the oxidation of glucose by glucose oxidase. The limit of detection for H 2 O 2 and glucose was found to be 0.52 and 3.0 μ M, respectively. The obtained N, Fe-codoped carbon dots, which possess simulated peroxidase activity, can potentially be used in the field of biotechnology." @default.
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• W3022632904 date "2020-05-08" @default.
• W3022632904 modified "2023-10-16" @default.
• W3022632904 title "One-Step Hydrothermal Synthesis of N, Fe-Codoped Carbon Dots as Mimic Peroxidase and Application on Hydrogen Peroxide and Glucose Detection" @default.
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• W3022632904 doi "https://doi.org/10.1155/2020/1363212" @default.
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