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A novel fluorescent carbon-based nanomaterial and its preparation method and application

A carbon-based nanomaterial and fluorescence technology, applied in the detection field, can solve problems affecting the development of detection technology, achieve excellent color rendering performance, and improve catalytic performance

Inactive Publication Date: 2019-04-12
YANCHENG INST OF TECH
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Problems solved by technology

At present, the use of FCNMs to detect metal ions mainly uses fluorescence detection technology, and the method used requires fluorescence detection instruments, which seriously affects the development of its detection technology.

Method used

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  • A novel fluorescent carbon-based nanomaterial and its preparation method and application
  • A novel fluorescent carbon-based nanomaterial and its preparation method and application
  • A novel fluorescent carbon-based nanomaterial and its preparation method and application

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Embodiment Construction

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.

[0030] (1) Preparation of new FCNMs by hydrothermal method: Weigh 0.55g of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC) into a 50mL beaker, then add 12.5g mL water and 12.5 mL ethanol were sonicated at room temperature for 30 min, and then the obtained precursor solution was transferred to a polytetrafluoroethylene high-temperature reaction kettle, reacted at 180 °C for 8.0 h, and then cooled to room temperature (25 °C) naturally. The obtained pale yellow solution was subjected to centrifugal cleaning, the rotational speed of centrifugal cleaning was 10,000 rpm, the centrifugation time was 20 min, and the supernatant was stored at 4°C to obtain FCNMs with excellent fluorescence properties.

[0031] (2) pH value optimization: In order to obtain the best experimental conditions ...

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Abstract

The invention discloses novel fluorescent carbon-based nanomaterials (FCNMs), a preparation method thereof and an application thereof in colorimetric detection of metal ions. The FCNMs adopt spherical crystal configuration with particle size being 5-7 nm and contain C, N and O elements, and the optimum excitation wavelength is 330 nm. The uniformly dispersed FCNMs are synthesized with a simple hydrothermal method, the catalytic performance of the carbon-based nanomaterials is effectively improved, the application of the materials in the field of catalysis is facilitated, the technical problem that the FCNMs only perform fluorescence detection of metal ions is solved, and simple colorimetric detection of metal ions in water is realized. Fluorescence and colorimetric tests show that the FCNMs have excellent color rendering properties for various metal ions under the action of H2O2, and can realize H2O2 wide linear detection. A prepared product not only can be used for fluorescence detection of some substances, but also can be applied to colorimetric analysis of metal ions in water and taken as catalysts to be used in the field of catalysis.

Description

technical field [0001] The invention belongs to the field of detection, and in particular relates to a fluorescent carbon-based nanomaterial and a preparation method thereof, as well as for colorimetric detection of metal ions and quantitative detection of H 2 O 2 aspect applications. Background technique [0002] In nature, metal ion pollutants in the environment have attracted more and more attention because they can accumulate and enrich in organisms. If people eat organisms containing high concentrations of metal ions for a long time or are in an environment containing metal ions and their compounds, it may also lead to some important human diseases, including certain reproductive system, nervous system, cardiovascular chronic diseases and some developmental disorders , especially may cause some serious child development problems. [0003] Fluorescent carbon-based nanomaterials (FCNMs) have wide applications in bioimaging, catalysis, sensors, and photoelectrochemistry...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/65G01N21/64G01N21/78
CPCC09K11/65G01N21/6428G01N21/78G01N2021/6432
Inventor 王忠霞王伟
Owner YANCHENG INST OF TECH
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