Chemiluminescence catalysed by gold nanoparticles for the analysis of arsenic (III) in real water

Gaur, M. S.; Yadav, Reetu; Berlina, Anna N.; Zherdev, Anatoly V.; Dzantiev, Boris B.

doi:10.1080/17458080.2016.1227096

Cited by 9 publications

(3 citation statements)

References 30 publications

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“…The above results demonstrated that HO • and O 2 •– participated in the CL reaction. According to the literature, − CoFe 2 O 4 NPs with POD-like activity and Au NPs could catalyze H 2 O 2 decomposition to produce HO • and O 2 •– , which reacted with ABEI – to facilitate the formation of ABEI •– . Then, ABEI •– reacted with O 2 •– to generate excited-state oxidation product ABEI-ox*, accompanied by release of strong light emission.…”

Section: Resultsmentioning

confidence: 99%

Au Nanoparticle-Decorated Magnetic CoFe₂O₄ Core Nanoparticles Functionalized with N-(4-Aminobutyl)-N-ethylisoluminol for Detection of Copeptin

Yuan

Dong

Ren

et al. 2022

ACS Appl. Nano Mater.

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Chemiluminescent (CL) functionalized nanomaterials with good CL property, excellent catalytic performance, and fast magnetic separation ability have great help in CL biological analysis. In this study, the magnetic core cobalt ferrite nanoparticles (CoFe2O4 NPs), possessing good peroxidase (POD)-like activity, were synthesized directly by a one-step solvothermal process. Then, N-(4-aminobutyl)-N-ethylisoluminol-gold NPs (ABEI-Au NPs) were modified on the CoFe2O4 NPs surface via a redox method to obtain CoFe2O4@ABEI-Au NPs. The synthetic NPs exhibited a spherical structure featuring a mean size of 125 ± 20 nm. The CL property of CoFe2O4@ABEI-Au NPs was more than 100 times that of ABEI-Au NPs, showing the good catalytic property of CoFe2O4 NPs. Furthermore, CoFe2O4@ABEI-Au NPs also displayed good superparamagnetism, which could be quickly separated from the mixture. Hence, a label-free CL immunosensor was established on the basis of CoFe2O4@ABEI-Au NPs for copeptin detection. The immunosensor had a wide linear range from 1.0 × 10–13 to 1.0 × 10–8 g/mL and a low detection limit of 3.3 × 10–14 g/mL, which is better than most of the immunosensors reported so far. The developed immunosensor was used for the analysis of copeptin in human serum specimens, and the measured results were close to the values of enzyme linked immunosorbent assay (ELISA), manifesting the feasibility in AMI clinical diagnosis. This label-free CL immunosensor featuring ease of fabrication, sensitivity, and rapid separation provides a versatile platform for bioanalysis.

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Section: Resultsmentioning

confidence: 99%

Au Nanoparticle-Decorated Magnetic CoFe₂O₄ Core Nanoparticles Functionalized with N-(4-Aminobutyl)-N-ethylisoluminol for Detection of Copeptin

Yuan

Dong

Ren

et al. 2022

ACS Appl. Nano Mater.

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“…CL is highly sensitive, discriminative and has a broad detection range, therefore, it is gaining attention as a powerful tool for trace detection of Hg 21 (Yuezhen et al, 2015;He et al, 2015;Gaur et al, 2016;Gribas and Sakharov, 2018). Oxidation and reduction reactions that change chemical energy into light energy are called CL.…”

Section: Chemiluminescent Methodsmentioning

confidence: 99%

Modern nanobiotechnologies for efficient detection and remediation of mercury

Gaur

Yadav

Kushwah

et al. 2021

Self Cite

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Purpose This information will be useful in the selection of materials and technology for the detection and removal of mercury ions at a low cost and with high sensitivity and selectivity. The purpose of this study is to provide the useful information for selection of materials and technology to detect and remove the mercury ions from water with high sensitivity and selectivity. The purpose of this study is to provide the useful information for selection of materials and technology to detect and remove the mercury ions from water with high sensitivity and selectivity. Design/methodology/approach Different nano- and bio-materials allowed for the development of a variety of biosensors – colorimetric, chemiluminescent, electrochemical, whole-cell and aptasensors – are described. The materials used for their development also make it possible to use them in removing heavy metals, which are toxic contaminants, from environmental water samples. Findings This review focuses on different technologies, tools and materials for mercury (heavy metals) detection and remediation to environmental samples. Originality/value This review gives up-to-date and systemic information on modern nanotechnology methods for heavy metal detection. Different recognition molecules and nanomaterials have been discussed for remediation to water samples. The present review may provide valuable information to researchers regarding novel mercury ions detection sensors and encourage them for further research/development.

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“…Here we emphasize on the enhancement of chemiluminescence by GNPs in a luminol-H 2 O 2 system. It is supposed that GNPs can facilitate the radical generation and then the electron-transfer process is taking place at the surface of GNPs 20,21 . Moreover, in our previous work 22 it has been shown that gold even in ion form can act as an efficient catalyst for luminol oxidation and consequently increases the intensity of chemiluminescence signal.…”

Section: Signal Amplification By Intercross-linked Gnps In Order To mentioning

confidence: 99%

Ultrasensitive nano-aptasensor for monitoring retinol binding protein 4 as a biomarker for diabetes prognosis at early stages

Torabi

Ghourchian

2020

Sci Rep

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Prognosis of diabetes risk at early stages has become an important challenge due to the prevalence of this disease. Retinol binding protein 4 (RBP4), a recently identified adipokine, has been introduced as a predictor for the onset of diabetes type 2 in coming future. In the present report a sensitive aptasensor for detection of RBP4 is introduced. The immune sandwich was prepared by immobilizing biotinylated RBP4 aptamers on streptavidin coated polystyrene micro-wells and then incubation of RBP4 as target and finally addition of luminol-antibody bearing intercross-linked gold nanoparticles as reporter. The chemiluminescence intensity was recorded in the presence of hydrogen peroxide as oxidant agent and Au 3+ as an efficient catalyst for luminol oxidation. The aptasensor responded to RBP4 in the linear concentration range from 0.001 to 2 ng/mL and detection limit was slightly less than 1 pg/mL. The proposed method has successfully applied to determine the RBP4 in patient real serums. By using the intercross-linked gold nanoparticles, it is possible to provide more accessible surface for immobilizing luminol and enhance the chemiluminescence signal. Therefore, the analytical parameters such as sensitivity, specificity, detection limit and linear range were improved in compare to the biosensors reported in the literature.

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Chemiluminescence catalysed by gold nanoparticles for the analysis of arsenic (III) in real water

Cited by 9 publications

References 30 publications

Au Nanoparticle-Decorated Magnetic CoFe₂O₄ Core Nanoparticles Functionalized with N-(4-Aminobutyl)-N-ethylisoluminol for Detection of Copeptin

Au Nanoparticle-Decorated Magnetic CoFe₂O₄ Core Nanoparticles Functionalized with N-(4-Aminobutyl)-N-ethylisoluminol for Detection of Copeptin

Modern nanobiotechnologies for efficient detection and remediation of mercury

Ultrasensitive nano-aptasensor for monitoring retinol binding protein 4 as a biomarker for diabetes prognosis at early stages

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Chemiluminescence catalysed by gold nanoparticles for the analysis of arsenic (III) in real water

Cited by 9 publications

References 30 publications

Au Nanoparticle-Decorated Magnetic CoFe2O4 Core Nanoparticles Functionalized with N-(4-Aminobutyl)-N-ethylisoluminol for Detection of Copeptin

Au Nanoparticle-Decorated Magnetic CoFe2O4 Core Nanoparticles Functionalized with N-(4-Aminobutyl)-N-ethylisoluminol for Detection of Copeptin

Modern nanobiotechnologies for efficient detection and remediation of mercury

Ultrasensitive nano-aptasensor for monitoring retinol binding protein 4 as a biomarker for diabetes prognosis at early stages

Contact Info

Product

Resources

About

Au Nanoparticle-Decorated Magnetic CoFe₂O₄ Core Nanoparticles Functionalized with N-(4-Aminobutyl)-N-ethylisoluminol for Detection of Copeptin

Au Nanoparticle-Decorated Magnetic CoFe₂O₄ Core Nanoparticles Functionalized with N-(4-Aminobutyl)-N-ethylisoluminol for Detection of Copeptin