Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method and application of self-cleaning electrochemical sensor under visible light

An electrochemical and sensor technology, which is applied in the field of electrochemical sensor preparation, can solve problems such as unfavorable electrochemical testing, unfavorable formation of network structure, asymmetry of carboxyl salts, etc., so that the use efficiency of electrodes will not be affected and the detection effect will be improved. Good, low cost effect

Active Publication Date: 2019-12-13
HUBEI UNIV FOR NATITIES
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Metal frameworks (MOFs) are porous, which can increase their specific surface area and porosity. Ti-containing MOFs have high photocatalytic activity, but often have the following disadvantages, such as Ti metal-ligand bonding or dissociation Reversible, which prevents its crystallization; most titanium sources will undergo hydrolysis after binding with organic ligands; most carboxyl salts are asymmetric, which is not conducive to the formation of network structure
Moreover, MOFs have the characteristics of poor conductivity, which is not conducive to the direct preparation of electrode materials for electrochemical testing.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method and application of self-cleaning electrochemical sensor under visible light
  • Preparation method and application of self-cleaning electrochemical sensor under visible light
  • Preparation method and application of self-cleaning electrochemical sensor under visible light

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A method for preparing a hydroquinone and catechol electrochemical sensor with self-cleaning ability under ultraviolet light or visible light, comprising the following steps in sequence:

[0053] (1) Mix 0.012g citric acid monohydrate, 0.55g trimesic acid and 0.8g (1.8476mmol) La(NO 3 ) 3 ·6H 2 Add O to 9mL N, N-dimethylformamide (DMF) to dissolve, slowly add 0.5mL (1.467mmol) tetra-n-butyl titanate (TBOT) under magnetic stirring, and heat at a heating rate of 10°C / min. Reaction at 150°C for 48 hours to obtain the La-Ti metal frame material, followed by solvent exchange of the La-Ti metal frame material with chloroform and methanol, and drying at 100°C to obtain the LTOF precursor material;

[0054] (2) Weigh 2g of LTOF precursor material in a crucible, raise the temperature to 800°C at a heating rate of 10°C / min under the protection of nitrogen flow, and keep it warm for 300min, take it out, grind it, and name this new composite material LTOF- 800;

[0055] (3) Tak...

Embodiment 2

[0061] A method for preparing a hydroquinone and catechol electrochemical sensor with self-cleaning ability under ultraviolet light or visible light, comprising the following steps in sequence:

[0062] (1) Mix 0.012g citric acid monohydrate, 0.55g trimesic acid and 0.802g (1.8477mmol) Ce(NO 3 ) 3 ·6H 2 Add O to 9mL N, N-dimethylformamide (DMF) to dissolve, slowly add 0.638mL (1.8703mmol) tetra-n-butyl titanate (TBOT) under magnetic stirring, and heat with hydrothermal heating at a rate of 10°C / min React at 150°C for 48 hours to obtain the Ce-Ti metal frame material, perform solvent exchange on the Ce-Ti metal frame material with chloroform and methanol in sequence, and dry at 100°C to obtain the CTOF precursor material;

[0063] (2) Weigh 2g of CTOF precursor material in a crucible, raise the temperature to 800°C at a heating rate of 10°C / min under the protection of nitrogen flow, and keep it warm for 300min, take it out and grind it, and name this new composite material CT...

Embodiment 3

[0070] A method for preparing a hydroquinone and catechol electrochemical sensor with self-cleaning ability under ultraviolet light or visible light, comprising the following steps in sequence:

[0071] (1) Mix 0.012g citric acid monohydrate, 0.55g trimesic acid, 0.810g (1.848mmol) Nd(NO 3 ) 3 ·6H 2 O, take 9mL of N, N-dimethylformamide (DMF) to dissolve, slowly add 0.644mL (1.888mmol) tetra-n-butyl titanate (TBOT) under magnetic stirring, and heat to React at 150°C for 48 hours to prepare the Nd-Ti metal frame material, perform solvent exchange on the Nd-Ti metal frame material with chloroform and methanol in sequence, and dry at 100°C to obtain the NTOF precursor material;

[0072] (2) Weigh 2g of NTOF precursor material in a crucible, raise the temperature to 800°C at a heating rate of 10°C / min under the protection of nitrogen flow, and keep it warm for 300min, take it out and grind it, and name this new composite material NTOF-800 ;

[0073] (3) Dissolve 10 mg of NTOF-...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of preparation of electrochemical sensors, and specifically discloses an electrochemical sensor with self-cleaning ability. The electrochemical sensor comprises an electrode core and a novel composite material based on MTOF (M refers to a doped metal element), and the composite material is attached to the surface of the electrode core. The preparation method of the sensor is simple, time-saving, low in cost and environmentally friendly. In particular, the residue of polymers and detected substance contained in the sensor and attached to the surfaceof the electrode core after detection can be oxidized under ultraviolet light and visible light conditions, thereby realizing the regeneration and self-cleaning effects of electrochemical sensor undervisible light. An electrochemical sensing platform regenerated under visible light not only reduces the tedious process of electrode polishing and modification, but also saves the cost of modifying materials, and the descaling regeneration of the electrode prolongs the service life of the electrode. The sensor is applied to the simultaneous detection of environmental pollutants, that is, hydroquinone and catechol, the operation is simple and convenient, the selectivity is good, the sensitivity is high, and the detection limit is low.

Description

technical field [0001] The invention relates to the technical field of preparation of electrochemical sensors, in particular to an electrochemical sensor for simultaneously measuring hydroquinone and catechol, and the electrochemical sensor has the ability to achieve self-cleaning under visible light. Background technique [0002] Electrochemical sensing technology has shown high detection ability and effect in biochemical, medical, food environment monitoring and other fields. Electrochemical analysis method has low cost, fast analysis speed, good detection performance, less sample consumption, high sensitivity, and selectivity. It has the advantages of good performance, convenient operation, and no complicated pretreatment process. It can achieve quantitative detection and analysis for biological samples, environmental monitoring and food safety. However, for electrochemical methods, the chemical reaction occurs on the surface of the electrode and the solution. During the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26G01N27/30G01N27/38
CPCG01N27/26G01N27/30G01N27/38
Inventor 郑寅陈泇冰鲁猷栾宋新建黄乐舒
Owner HUBEI UNIV FOR NATITIES
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com