N-CNTs@NiCo-LDHs dendritic nanoflower material and preparation method and photoelectrochemical application thereof

A nano-flower and tree-like technology, applied in the field of biosensing, can solve the problems of easy inactivation of enzymes, low cost and high cost, and achieve the effects of stable nature, low price, and reduction of oxidative overpotential.

Active Publication Date: 2021-11-26
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional H 2 o 2 Catalysts are mainly based on platinum, palladium, gold, silver and other noble metal nanomaterials and H 2 o 2 Enzyme complexes, etc., have limitations such as high cost and easy inactivation of enzymes
In addition, transition metals nickel (Ni), cobalt (Co), iron, etc. and their complexes have good catalytic activity, low cost, and environmental friendliness, especially layered double hydroxides such as NiCo-LDHs are widely used for energy storage There are still few reports on the development of devices and applications such as catalytic water splitting, research on their biocatalytic performance and detection of biomarkers

Method used

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  • N-CNTs@NiCo-LDHs dendritic nanoflower material and preparation method and photoelectrochemical application thereof
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  • N-CNTs@NiCo-LDHs dendritic nanoflower material and preparation method and photoelectrochemical application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Weigh 1.5710g of methyl orange and dissolve it in 100mL of water to form a transparent solution, quickly add 0.7780g of anhydrous FeCl 3 , keep at 1200r / min for 30min to form a uniform fibrous composite suspension, and use the fibrous composite as a self-degradation template.

[0039] Add 0.84mL of Py monomer dropwise to the above-mentioned fibrous composite suspension, and keep it under magnetic stirring at 1200r / min at a temperature of 25°C for 24h, so that Py is uniformly aggregated on the surface, and the Buchner funnel is used to reduce After pressure filtration, wash with secondary water and absolute ethanol several times until the filtrate becomes colorless to remove excess methyl orange, and then dry the filtered product in an oven at 60°C for 12 hours to obtain PPy. Finally the PPy solid in N 2 Under the atmosphere, the temperature was raised to 800°C at a rate of 5°C / min and kept for 2 hours to obtain black N-CNTs.

[0040] Weigh 40 mg of the above-synthesiz...

Embodiment 2

[0042] Weigh 1.5710g of methyl orange and dissolve it in 100mL of water to form a transparent solution, quickly add 0.7780g of anhydrous FeCl 3 , keep at 1200r / min for 30min to form a uniform fibrous composite suspension, and use the fibrous composite as a self-degradation template.

[0043] Add 0.84mL of Py monomer dropwise to the above-mentioned fibrous composite suspension, and keep it under magnetic stirring at 1200r / min at a temperature of 25°C for 24h, so that Py is uniformly aggregated on the surface, and the Buchner funnel is used to reduce After pressure filtration, wash with secondary water and absolute ethanol several times until the filtrate becomes colorless to remove excess methyl orange, and then dry the filtered product in an oven at 60°C for 12 hours to obtain PPy. Finally the PPy solid in N 2 Under the atmosphere, the temperature was raised to 800°C at a rate of 5°C / min and kept for 2 hours to obtain black N-CNTs.

[0044] Weigh 40 mg of the above-synthesiz...

Embodiment 3

[0046] Weigh 1.5710g of methyl orange and dissolve it in 100mL of water to form a transparent solution, quickly add 0.7780g of anhydrous FeCl 3 , keep at 1200r / min for 30min to form a uniform fibrous composite suspension, and use the fibrous composite as a self-degradation template.

[0047] Add 0.84mL of Py monomer dropwise to the above-mentioned fibrous composite suspension, and keep it under magnetic stirring at 1200r / min at a temperature of 25°C for 24h, so that Py is uniformly aggregated on the surface, and the Buchner funnel is used to reduce After pressure filtration, wash with secondary water and absolute ethanol several times until the filtrate becomes colorless to remove excess methyl orange, and then dry the filtered product in an oven at 60°C for 12 hours to obtain PPy. Finally the PPy solid in N 2 Under the atmosphere, the temperature was raised to 800°C at a rate of 5°C / min and kept for 2 hours to obtain black N-CNTs.

[0048] Weigh 40 mg of the above-synthesiz...

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Abstract

The invention provides an N-CNT@NiCo-LDHs tree-shaped nanoflower material as well as a preparation method and photoelectrochemical application thereof, and belongs to the technical field of biosensing. The preparation method comprises the following steps: adding anhydrous ferric trichloride into a methyl orange solution at room temperature to form a fibrous compound suspension for later use; adding a pyrrole monomer into the fibrous compound suspension, stirring overnight, filtering, washing and drying to obtain polypyrrole hollow nanotubes, and then carbonizing at high temperature in a nitrogen atmosphere to prepare N-CNTs; by taking N-CNTs as a conductive substrate, ultrasonically dispersing the N-CNTs in ethanol to prepare a solution A; then by taking the Co(NO3)2.6H2O and Ni(NO3)2.6H2O as metal sources and hexamethylenetetramine as a homogeneous precipitator, dissolving the components in water to prepare a solution B, mixing the solution A and the solution B, carrying out a homogeneous precipitation reaction, and washing and drying the product to prepare the N-CNTs@NiCo-LDHs dendritic nanoflower material. The preparation method provided by the invention has the advantages of cheap and easily available raw materials, low cost, environmental friendliness, simple synthesis process and easy realization of reaction conditions, and can be widely applied to the field of photoelectrochemistry.

Description

technical field [0001] The present invention relates to the technical field of biosensing, and more specifically relates to an N-CNTs@NiCo-LDHs dendritic nanoflower material and its preparation method and application. Background technique [0002] h 2 o 2 As a by-product of many biological processes in life and one of the most representative reactive oxygen species (ROS), it is crucial in life processes such as cell division, signal transduction, and apoptosis. 2 o 2 The highly sensitive detection of is of great significance in biological analysis. Traditional H 2 o 2 Detection technologies include cell imaging, fluorescence spectroscopy, electrochemical methods, etc. Among them, electrochemical methods are unanimously considered to be a powerful detection method due to their advantages of high sensitivity, fast detection speed, less dosage, and low cost. Luminescent technology combines the high sensitivity of electrochemistry and the advantages of multiple output of o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/162C01G53/00G01N27/30G01N27/48
CPCC01B32/162C01G53/00G01N27/308G01N27/48C01P2004/80C01P2004/30C01P2004/03C01P2004/04Y02P20/133
Inventor 申聪聪陈粤华党坦冯北斗崔景强仉华
Owner HENAN NORMAL UNIV
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