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Fluorescent powder applied to electrochemical detection as well as preparation and application methods thereof

An application method and phosphor technology, applied in the direction of chemical instruments and methods, material electrochemical variables, measuring devices, etc., can solve the problems of low power of batteries and capacitors, complex instruments and equipment, low energy density, etc., to increase production, prepare The effect of simple process, high yield and high yield

Pending Publication Date: 2021-03-23
XINYI XIYI ADVANCED MATERIALS RES INST OF IND TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, batteries and capacitors have serious disadvantages such as low power and low energy density, respectively
Some chromatographic and spectrophotometric techniques can be used to detect drug molecules, but require complex instrumentation, which limits their application

Method used

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  • Fluorescent powder applied to electrochemical detection as well as preparation and application methods thereof
  • Fluorescent powder applied to electrochemical detection as well as preparation and application methods thereof
  • Fluorescent powder applied to electrochemical detection as well as preparation and application methods thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Lu 10 Si 6 o 27 :1%Eu 3+

[0019] Phosphor powder preparation: Weigh Lu(NO 3 ) 3 , Eu(NO 3 ) 3 , SiO 2 For ingredients, mix well. The mixed raw material and urea are mixed according to a mass ratio of 2 and stirred at room temperature at 200 rpm. After stirring, it was heated at 500°C for 0.5h to obtain a powder. Calcining the powder at 1000° C. for 2 hours, and grinding to obtain the phosphor.

[0020] Preparation of carbon paste electrode: Grind phosphor powder, graphite powder and silicone oil in an agate mortar to form a uniform paste, wherein the mass ratio of graphite powder to phosphor powder is 5, and the mass ratio of graphite powder to silicone oil is 2. The paste is put into the electrode hollow tube to obtain the carbon paste electrode.

Embodiment 2

[0021] Example 2: Lu 10 Si 6 o 27 :3%Eu 3+

[0022] Phosphor powder preparation: Weigh Lu(NO 3 ) 3 , Eu(NO 3 ) 3 , SiO 2 For ingredients, mix well. The mixed raw material and urea were mixed according to a mass ratio of 0.5 and stirred at room temperature at 300 rpm. After stirring, it was heated at 400°C for 2h to obtain a powder. The powder was calcined at 900° C. for 5 hours and ground to obtain the phosphor.

[0023] Preparation of carbon paste electrodes: Grind phosphor powder, graphite powder and silicone oil in an agate mortar to form a uniform paste, wherein the mass ratio of graphite powder to phosphor powder is 2, and the mass ratio of graphite powder to silicone oil is 4. The paste is put into the electrode hollow tube to obtain the carbon paste electrode.

Embodiment 3

[0024] Example 3: Lu 10 Si 6 o 27 :5%Eu 3+

[0025] Phosphor powder preparation: Weigh Lu(NO 3 ) 3 , Eu(NO 3 ) 3 , SiO 2 For ingredients, mix well. The mixed raw material and urea are mixed according to a mass ratio of 1 and stirred at room temperature at 280 rpm. After stirring, it was heated at 450° C. for 1 h to obtain a powder. The powder was calcined at 950° C. for 3 hours and ground to obtain the phosphor.

[0026] Preparation of carbon paste electrodes: Grind phosphor powder, graphite powder and silicone oil in an agate mortar to form a uniform paste, wherein the mass ratio of graphite powder to phosphor powder is 4, and the mass ratio of graphite powder to silicone oil is 3. The paste is put into the electrode hollow tube to obtain the carbon paste electrode.

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Abstract

The invention discloses fluorescent powder applied to electrochemical detection as well as preparation and application methods thereof, belonging to the technical field of preparation and applicationof luminescent materials. The chemical formula of the fluorescent powder is Lu10Si6O27: x% Eu<3+>, wherein x is larger than or equal to 5 and smaller than or equal to 9. According to the invention, pure fluorescent powder is prepared through a solution combustion method, and the prepared fluorescent powder shows red light emission under excitation of light with a wavelength of 391 nm and shows yellow-green light emission under excitation of light with a wavelength of 462 nm. A modified carbon paste electrode prepared from the fluorescent powder can be used for detecting acetaminophen. The preparation method provided by the invention is simple in process, stable in product performance and suitable for industrial production.

Description

technical field [0001] The invention provides a fluorescent powder used in electrochemical detection and a preparation and application method thereof, belonging to the technical field of preparation and application of luminescent materials. Background technique [0002] Nanomaterials are used as radiation detectors in sensors, coating materials and catalysts, tunable lasers, cathode ray tubes, memory devices, flat panel displays, medical imaging systems due to their unique physical, chemical, optical, mechanical, magnetic and electrical properties , electroluminescence and optoelectronic devices have a wide range of applications. Now, there is an increasing demand and demand for nano-fluorescent particles with lower price and longer lifetime. Among them, rare earth (RE) ions and reactive red emitting phosphors play a prominent role in display devices. RE ions are widely used as luminescent centers of phosphors. [0003] Furthermore, with the increasing demand for energy s...

Claims

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Application Information

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IPC IPC(8): C09K11/79G01N27/30
CPCC09K11/7792G01N27/308
Inventor 张乐甄方正邵岑陈东顺张永丽申冰磊康健
Owner XINYI XIYI ADVANCED MATERIALS RES INST OF IND TECH CO LTD
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