Rapid detection of Cr(VI) ions based on cobalt(II)-doped carbon dots

Zhang, Hongyu; Wang, Yu; Xiao, Siguo; Wang, Han; Wang, Jihui; Feng, Liang

doi:10.1016/j.bios.2016.08.010

Cited by 238 publications

(59 citation statements)

References 40 publications

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“…The O 1s spectrum (Fig. 2d) was deconvoluted into three components located at 531.1, 531.9 and 533.3 eV, which are associated with C@O [42], CAOH [38] and CAOAC groups [43], respectively. Consistent with the FT-IR results, XPS results confirm the existence of the polycyclic heterocycles and abundant hydrophilic groups on surface of N-CDs (e.g., hydroxyl, amino and carboxylic groups).…”

Section: Structure and Composition Of The As-prepared N-cdsmentioning

confidence: 99%

Facile and large-scale synthesis of green-emitting carbon nanodots from aspartame and the applications for ferric ions sensing and cell imaging

2017

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Section: Structure and Composition Of The As-prepared N-cdsmentioning

confidence: 99%

Facile and large-scale synthesis of green-emitting carbon nanodots from aspartame and the applications for ferric ions sensing and cell imaging

2017

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“…In view of the outstanding properties, CDs have been widely used in bioimaging, biosensing, photocatalysis and drug/gene delivery 33–38 . However, only a few fluorescent assays based on CDs have been reported for PPi or ALP activity detection.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen-doped Carbon Dots Mediated Fluorescent on-off Assay for Rapid and Highly Sensitive Pyrophosphate and Alkaline Phosphatase Detection

Geng

Zhang

et al. 2017

Sci Rep

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In this report, a novel fluorescent sensing platform using nitrogen-doped carbon dots (N-CDs) as probes for fluorescence signal transmission has been designed for the detection of significant biomolecules pyrophosphate (PPi) and alkaline phosphatase (ALP). The high fluorescent N-CDs could be selectively quenched by Cu2+, and recovered by the addition of PPi because PPi preferentially binds to Cu2+. Once ALP was introduced into the system, ALP can specifically hydrolyze PPi into Pi, the intense fluorescence of N-CDs could be quenched again due to the recombination of the as-released Cu2+ with N-CDs. So, fluorescence of N-CDs is regulated by an ALP-triggered reaction. Based on this strategy, we demonstrated that N-CDs could serve as a very effective fluorescent sensing platform for label-free, sensitive and selective detection of PPi and ALP with low detection limit of 0.16 μM and 0.4 U/L for PPi and ALP, respectively. Moreover, the assay time is just around 0.5 min for PPi and 30 min for ALP. This developed strategy shows remarkable advantages including sensitive, rapid, simple, convenient, and low-cost and so forth. Furthermore, this method was also successfully applied to monitor ALP in human serum, which indicates its great potential for practical applications in biological and clinical diagnosis.

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“…The O1s spectrum (Fig. 5C) is broad and asymmetric and can be www.nature.com/scientificreports www.nature.com/scientificreports/ deconvoluted into three peaks, which indicate the presence of three different oxygen species, there are attributed to C-O, C=O groups 25 and Pr-O-Pr groups. The DLS (Dynamic Light Scattering) test results are shown in Fig.…”

Section: Synthesis Of Nano-pro 18 Nanocrystalmentioning

confidence: 99%

Ultrasonic synthesis of nano-PrO1.8 as nanozyme for colorimetric determination of trans-resveratrol

Wang

Liu

et al. 2020

Sci Rep

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in this study, nano-pro 1.8 were synthesized successfully in ionic liquids (iLs) as template assisted ultrasonic irradiation method. Various precipitating agents and different types of ILs were investigated to determine their respective effects on the morphology of the end products. Using hydrazine hydrate as a precipitating agent and 1-carboxymethyl-3-methylimidazolium chloride as a template, spherical structure with an average diameter of 250 nm was obtained. It is worth noting that the prepared material exhibits high peroxidase-like activity and weak oxidase activity. Then, the catalytic oxidation capacity of the nano-pro 1.8 was evaluated by the peroxidase substrate 3,3′,5,5′-tetramethylbenzidine (TMB). The colorless of TMB can be converted into blue oxidized TMB (oxTMB) in the presence of nanopro 1.8 , but trans-resveratrol inhibited its peroxidase-like activity and weakened the blue color. Hence, we developed a sensitive, selective and simple colorimetric method for trans-resveratrol detection using nano-pro 1.8 as peroxidase-like enzyme. A linear relationship was found in the range of 0.30 µM-16 µM trans-resveratrol with the detection limit of 0.29 µM. Satisfactory results were achieved when the method was submitted to the determination of trans-resveratrol in white wine samples.

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Rapid detection of Cr(VI) ions based on cobalt(II)-doped carbon dots

Cited by 238 publications

References 40 publications

Facile and large-scale synthesis of green-emitting carbon nanodots from aspartame and the applications for ferric ions sensing and cell imaging

Facile and large-scale synthesis of green-emitting carbon nanodots from aspartame and the applications for ferric ions sensing and cell imaging

Nitrogen-doped Carbon Dots Mediated Fluorescent on-off Assay for Rapid and Highly Sensitive Pyrophosphate and Alkaline Phosphatase Detection

Ultrasonic synthesis of nano-PrO1.8 as nanozyme for colorimetric determination of trans-resveratrol

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