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

Rhodium oxide-nano porous nickel composite electrode capable of detecting formaldehyde and preparation method thereof

A nanoporous nickel and composite electrode technology, which is applied to the electrochemical variables of materials, electrolytic inorganic material coatings, air quality improvement, etc., can solve the problems of inaccurate detection of formaldehyde, the influence of formaldehyde sensors, and insufficient sensitivity, so as to avoid the interference of humidity and potential drift phenomenon, improve sensitivity and response speed, and solve the effect of sensitivity

Active Publication Date: 2020-08-14
广州钰芯传感科技有限公司
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main technical problem to be solved by the present invention is that the existing formaldehyde sensor is affected by humidity, has poor stability, insufficient sensitivity, and insufficient detection accuracy, specifically the problem that formaldehyde, a trace pollutant in the environment and water body, cannot be accurately detected

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
  • Rhodium oxide-nano porous nickel composite electrode capable of detecting formaldehyde and preparation method thereof
  • Rhodium oxide-nano porous nickel composite electrode capable of detecting formaldehyde and preparation method thereof
  • Rhodium oxide-nano porous nickel composite electrode capable of detecting formaldehyde and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Preparation of rhodium oxide-nanoporous nickel composite electrode:

[0045] (1) Preparation of porous nickel: adopt template method to prepare nanoporous nickel, concrete method is: first the polystyrene microsphere that diameter is 200-300nm is dispersed in deionized water with the mass concentration of 1-5wt%, forms stable suspension. Using polyimide copper-clad laminate as the working electrode and platinum mesh as the counter electrode, electrophoretic deposition was carried out in the polystyrene microsphere emulsion prepared above. The electrodeposition voltage was 3V and the time was 10min to obtain the polystyrene microsphere template. . Then configure an electrodeposition nickel plating solution, specifically 1.0M nickel sulfamate tetrahydrate, 0.02M nickel chloride and 0.3M boric acid. The polystyrene microsphere template is used as the working electrode, the platinum sheet is used as the counter electrode, and the current density is set at 15.0mA / cm 2 , t...

Embodiment 2

[0048] Preparation of rhodium oxide-nanoporous nickel composite electrode:

[0049] (1) Preparation of porous nickel: adopt template method to prepare nanoporous nickel, concrete method is: first the polystyrene microsphere that diameter is 200-300nm is dispersed in deionized water with the mass concentration of 1-5wt%, forms stable suspension. Using polyimide copper-clad laminate as the working electrode and platinum mesh as the counter electrode, electrophoretic deposition was carried out in the polystyrene microsphere emulsion prepared above. The voltage of electrodeposition was 5V and the time was 5min to obtain the polystyrene microsphere template. . Then configure an electrodeposition nickel plating solution, specifically 1.5M nickel sulfamate tetrahydrate, 0.05M nickel chloride and 0.6M boric acid. The polystyrene microsphere template is used as the working electrode, the platinum sheet is used as the counter electrode, and the current density is set at 10.0mA / cm 2 ,...

Embodiment 3

[0052] Preparation of rhodium oxide-nanoporous nickel composite electrode:

[0053] (1) Preparation of porous nickel: adopt template method to prepare nanoporous nickel, concrete method is: earlier the polystyrene microsphere that diameter is 200-300nm is dispersed in deionized water with the mass concentration of 1-5wt%, forms stable suspension. Using polyimide copper-clad laminate as the working electrode and platinum mesh as the counter electrode, electrophoretic deposition was carried out in the polystyrene microsphere emulsion prepared above. The voltage of electrodeposition was 5V and the time was 5min to obtain the polystyrene microsphere template. . Then configure the nickel electrodeposition solution, specifically 1.0M nickel sulfamate tetrahydrate, 0.02M nickel chloride and 0.3M boric acid. The polystyrene microsphere template is used as the working electrode, the platinum sheet is used as the counter electrode, and the current density is set at 12.0mA / cm 2 , the ...

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
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a rhodium oxide-nano porous nickel (Rh2O3@NPNi) composite electrode capable of detecting formaldehyde and a preparation method thereof. According to the preparation method, a nano-porous nickel electrode is prepared by adopting a template method, and rhodium oxide is modified on the surface of the porous nickel electrode to obtain a rhodium oxide-nano-porous nickel compositeelectrode. The electrode has a three-dimensional ordered nano-porous nickel and high-catalytic-activity flaky rhodium oxide composite structure, so that gas transmission channels are increased, and the sensitivity and the response speed of the electrode to formaldehyde are improved. The composite electrode is stable in structure, transmission of electrons is not hindered by an interface between amodification material and the electrode, and the composite electrode can be used for rapid detection of trace pollutant formaldehyde and can be used for a portable formaldehyde detection sensor.

Description

technical field [0001] The invention belongs to the field of gas electrochemical detection, relates to an electrode capable of detecting formaldehyde and a preparation method thereof, in particular to a rhodium oxide-nanoporous nickel (Rh 2 o 3 @NPNi) composite electrode and its preparation method. Background technique [0002] Formaldehyde, chemical formula HCHO, also known as formic aldehyde, a naturally occurring organic compound, is listed as "high-risk carcinogenic substances that must be strictly controlled". Formaldehyde is widely used. It is a popular chemical product with simple production process and sufficient supply of raw materials. It is the backbone of the downstream product tree of methanol. About 30% of methanol in the world is used to produce formaldehyde, with an annual output of about 25 million tons. [0003] Formaldehyde has a pungent smell and can be smelled at low concentrations. The human smell threshold for formaldehyde is usually 0.06-0.07mg / m 3...

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): G01N27/30C25D9/04C25D5/02C25D3/12
CPCG01N27/30C25D9/04C25D5/022C25D3/12Y02A50/20
Inventor 奚亚男胡淑锦
Owner 广州钰芯传感科技有限公司
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