N-doped carbon dots/H2O2 chemiluminescence system for selective detection of Fe2+ ion in environmental samples

Shah, Syed Niaz Ali; Dou, Xiangnan; Khan, Mashooq; Uchiyama, Katsumi; Lin, Jin‐Ming

doi:10.1016/j.talanta.2018.12.091

Cited by 74 publications

(27 citation statements)

References 34 publications

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“…Finally, CL sensors for TU and TA <Author: Please give abbreviations TU and TA in full.>were designed and applied to detect trace TU in real samples. Recently, Lin's group has reported strong CL in N–CDs due to hydroxyl radical ( • OH)‐induced electron–hole transition in N–CDs; a significant method was designed for selective detection of Fe 2+ in environmental samples …”

Section: Carbon Nanodotsmentioning

confidence: 99%

Quantum dots‐based chemiluminescence probes: an overview

Song

Zhang

et al. 2019

Luminescence

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This mini-review describes the recent developments in quantum dots-based nanoprobes in liquid-phase chemiluminescence (CL) analysis. In the referenced reports, multiple quantum dots (QDs) were adopted as final emission species either after direct oxidation reactions (direct CL) or after chemiluminescence resonance energy transfer (indirect CL). This review does not include papers in which QDs have been used as enhancers, catalysts, carriers or quenchers in chemiluminescence systems. A brief overview on the CL mechanisms of various QDs-based nanoprobes and their analytical applications over the last decade is given, followed by comments on the future challenges and prospects in this field. KEYWORDS chemiluminescence (CL), nanoprobe, quantum dots (QDs)

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Section: Carbon Nanodotsmentioning

confidence: 99%

Quantum dots‐based chemiluminescence probes: an overview

Song

Zhang

et al. 2019

Luminescence

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“…Based on the fluorescence quenching of S-CDs prepared from vitamin B1, Wu et al 7 developed a method to determine the content of Fe 3+ ions. Shah et al 8 used nitrogen-doped carbon dots (N-CDs)/ H 2 O 2 chemiluminescence system for selective detection of Fe 2+ in environmental samples. emission spectroscopy (AES).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen-doped carbon dots as a probe for the detection of Cu²⁺ and its cellular imaging

Wang

Yang

et al. 2019

Journal of Chemical Research

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Nitrogen-doped carbon dots were synthesized using citric acid monohydrate and glutathione as raw materials. The synthesized nitrogen-doped carbon dots were characterized by multiple analytical techniques, including transmission electron microscopy, Fourier transform infrared spectroscopy, ultraviolet–visible absorption spectroscopy, X-ray photoelectron spectroscopy, X-ray diffractometry, and fluorescence spectra. The fluorescence intensity of the nitrogen-doped carbon dots gradually quenched with different concentrations of Cu2+ ions. The effect of the pH value, the nitrogen-doped carbon dot concentration, and the reaction time on the fluorescence intensity of the N-CDs-Cu2+ system was investigated, and the experimental conditions were optimized. A rapid and sensitive method for the determination of Cu2+ ions was established that exhibited a good linearity in the concentration range 0.20–200.0 μM with a detection limit of 0.27 nM. Meanwhile, the fluorescence quenching mechanism of the interaction between nitrogen-doped carbon dots and Cu2+ was preliminarily discussed. The method was used to detect trace Cu2+ in tap water and lake water, with recoveries ranging from 98.1% to 102.0%. Furthermore, due to low cytotoxicity and good biocompatibility, nitrogen-doped carbon dots as a probe were also successfully used in bioimaging.

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“…For example, carboxyl-modified graphene oxide (GO-COOH) has intrinsic peroxidase-like activity when catalyzing the reaction of the peroxidase substrate, TMB, in the presence of H 2 O 2 to produce a blue-colored reaction product [ 71 ]. A series of CNM-based biosensors for H 2 O 2 [ 72 , 73 ] and other small molecules, ions [ 74 , 75 ], DNA [ 76 , 77 ], protein, and cancer cells have been developed, with the TMB used as a reaction substrate. The addition of TMB provides an added visual signal sensitivity since the TMB is readily oxidized by the carbon-based nanozyme.…”

Section: Nanozyme Classification and Their Catalytic Mechanismsmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

Nanozymes—Hitting the Biosensing “Target”

Darland

Zhao

2021

Sensors

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Nanozymes are a class of artificial enzymes that have dimensions in the nanometer range and can be composed of simple metal and metal oxide nanoparticles, metal nanoclusters, dots (both quantum and carbon), nanotubes, nanowires, or multiple metal-organic frameworks (MOFs). They exhibit excellent catalytic activities with low cost, high operational robustness, and a stable shelf-life. More importantly, they are amenable to modifications that can change their surface structures and increase the range of their applications. There are three main classes of nanozymes including the peroxidase-like, the oxidase-like, and the antioxidant nanozymes. Each of these classes catalyzes a specific group of reactions. With the development of nanoscience and nanotechnology, the variety of applications for nanozymes in diverse fields has expanded dramatically, with the most popular applications in biosensing. Nanozyme-based novel biosensors have been designed to detect ions, small molecules, nucleic acids, proteins, and cancer cells. The current review focuses on the catalytic mechanism of nanozymes, their application in biosensing, and the identification of future directions for the field.

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N-doped carbon dots/H2O2 chemiluminescence system for selective detection of Fe2+ ion in environmental samples

Cited by 74 publications

References 34 publications

Quantum dots‐based chemiluminescence probes: an overview

Quantum dots‐based chemiluminescence probes: an overview

Nitrogen-doped carbon dots as a probe for the detection of Cu²⁺ and its cellular imaging

Nanozymes—Hitting the Biosensing “Target”

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N-doped carbon dots/H2O2 chemiluminescence system for selective detection of Fe2+ ion in environmental samples

Cited by 74 publications

References 34 publications

Quantum dots‐based chemiluminescence probes: an overview

Quantum dots‐based chemiluminescence probes: an overview

Nitrogen-doped carbon dots as a probe for the detection of Cu2+ and its cellular imaging

Nanozymes—Hitting the Biosensing “Target”

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Product

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Nitrogen-doped carbon dots as a probe for the detection of Cu²⁺ and its cellular imaging