Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of hydrogen peroxide sensing device based on heteropoly acid salt and preparation method thereof

A technology of heteropoly acid salts and sensing devices, which is applied in the direction of measuring devices, electrochemical variables of materials, and material analysis through electromagnetic means, which can solve the problems of few heteropoly acid dissolution and achieve good catalytic performance and reproducibility The effect of simple, simple detection method, simple and feasible preparation method

Active Publication Date: 2022-07-12
广州钰芯传感科技有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, few reports have directly dissolved heteropolyacids in buffers to study their electrocatalytic properties.

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
  • A kind of hydrogen peroxide sensing device based on heteropoly acid salt and preparation method thereof
  • A kind of hydrogen peroxide sensing device based on heteropoly acid salt and preparation method thereof
  • A kind of hydrogen peroxide sensing device based on heteropoly acid salt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Preparation of hydrogen peroxide sensing devices based on heteropolyacid salts:

[0046] (1) Preparation of stock solution: Weigh iron-substituted phosphotungstic heteropolyacid salt (Bu 4 N) 5 PW 11 O 39 Fe II ·H 2 O was dissolved in pure solvent N,N-dimethylformamide to obtain a 2mmol / L heteropoly acid salt solution;

[0047] (2) Preparation of buffer bottom solution: take 2 mmol / L heteropolyacid salt solution prepared in step S1 and 0.2 mol / L HAc-NaAc buffer solution, mix them in a volume ratio of 1:1 to obtain 0.1 pH value of 4.2 mol / LDMF+HAc-NaAc and 1mmol / L heteropoly acid salt solution as buffer base.

[0048] (3) Electrode treatment: the detection electrodes are respectively used with Al of 1.0 μm, 0.3 μm and 0.05 μm 2 O 3 Powder polished with 1:1 HNO 3 , absolute ethanol, and ultrapure water were ultrasonicated for 1 min each, and air-dried for later use.

[0049] (4) Hydrogen peroxide detection: get the above-mentioned mixed bottom liquid of 5mL in t...

Embodiment 2

[0051] Preparation of hydrogen peroxide sensing devices based on heteropolyacid salts:

[0052] (1) Preparation of stock solution: Weigh iron-substituted phosphotungstic heteropolyacid salt (Bu 4 N) 5 PW 11 O 39 Fe II ·H 2 O was dissolved in pure solvent N,N-dimethylformamide to obtain a 2mmol / L heteropoly acid salt solution;

[0053] (2) Preparation of buffer bottom solution: take 2 mmol / L heteropolysalt solution prepared in step S1 and 0.2 mol / L HAc-NaAc buffer solution, and mix them in a volume ratio of 1:1 to obtain 0.1 pH value of 4.0 mol / LDMF+HAc-NaAc and 1mmol / L heteropoly acid salt solution as buffer base.

Embodiment 3

[0055] Preparation of hydrogen peroxide sensing devices based on heteropolyacid salts:

[0056] (1) Preparation of stock solution: Weigh iron-substituted phosphotungstic heteropolyacid salt (Bu 4 N) 5 PW 11 O 39 Fe II ·H 2 O was dissolved in pure solvent N,N-dimethylformamide to obtain a 2mmol / L heteropoly acid salt solution;

[0057] (2) Preparation of buffer bottom solution: take 2 mmol / L heteropolysalt solution prepared in step S1 and 0.2 mol / L HAc-NaAc buffer solution, mix them at a volume ratio of 1:1 to obtain 0.1 pH value of 4.5 mol / LDMF+HAc-NaAc and 1mmol / L heteropoly acid salt solution as buffer base.

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

No PUM Login to View More

Abstract

The invention provides a hydrogen peroxide sensing device based on a heteropoly acid salt and a preparation method thereof. In the present invention, iron-substituted phosphotungstic heteropoly salt is used as an electron mediator, and it is prepared into a buffer bottom solution with a pH value of 4.2 and a heteropoly salt concentration of 1 mmol / L, and electrochemical detection is carried out by an electrode. The sensing device has good catalytic performance and reproducibility for hydrogen peroxide. 2 O 2 The linear range of solution detection is 3.9×10 ‑5 mol / L~4.7×10 ‑3 mol / L, the detection limit is 5.2×10 ‑6 mol / L.

Description

technical field [0001] The invention belongs to the field of biochemical detection, and relates to a preparation method of a sensing device based on a heteropoly acid salt and its application in hydrogen peroxide detection. Background technique [0002] In an electrochemical reaction, the electron transfer between the electrode and the substrate is usually relatively slow, in this case, the electrode reaction needs to proceed at a higher overpotential, resulting in passivation of the electrode surface or the formation of a film, Reduced reaction activity and product selectivity. Therefore, in order to reduce the activation energy of the reaction so that it can proceed at a higher current density near the equilibrium potential, it is necessary to use a medium. This medium is inactive to the substrate, however, once it gains or loses electrons at the electrode, it becomes quite reactive, rapidly converting the substrate to the product. A substance that can act as such a medi...

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 Patents(China)
IPC IPC(8): G01N27/26G01N27/30G01N27/333
CPCG01N27/26G01N27/30G01N27/333
Inventor 奚亚男胡淑锦
Owner 广州钰芯传感科技有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com