Stannic oxide-polyacid compound gas sensing material and preparation method thereof

A tin dioxide and composite sensing technology, applied in chemical instruments and methods, tungsten compounds, analytical materials, etc., can solve the problems of weakening of gas sensing detection signal, affecting electron transmission, unfavorable real-time monitoring of measured gas, etc.

Inactive Publication Date: 2016-07-06
NORTHEAST NORMAL UNIVERSITY
View PDF5 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. In tin dioxide materials, after the electrons transition to the conduction band, the electrons and holes are easy to recombine, which affects the transmission of electrons, resulting in the weakening of the gas sensor detection signal

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
  • Stannic oxide-polyacid compound gas sensing material and preparation method thereof
  • Stannic oxide-polyacid compound gas sensing material and preparation method thereof
  • Stannic oxide-polyacid compound gas sensing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0039] Put the interdigitated electrode with the composite film into a 500 ml airtight quartz bottle for testing, one of the gold electrodes of the interdigitated electrode is connected to the working electrode of the electrochemical workstation with a wire, the other gold electrode and the counter electrode and the reference connected to the electrodes. A voltage of 1V was applied between the two electrodes, and a stable photocurrent value was obtained under the irradiation of a xenon lamp. When 50ppm, 100ppm, 150ppm and 200ppm formaldehyde gas were injected into the quartz vial, the photocurrent between the two electrodes increased significantly. (see attached Figure 7 )

specific Embodiment 2

[0040] Put the interdigitated electrode with the composite film into a 500 ml airtight quartz bottle for testing, one of the gold electrodes of the interdigitated electrode is connected to the working electrode of the electrochemical workstation with a wire, the other gold electrode and the counter electrode and the reference connected to the electrodes. A voltage of 1V was applied between the two electrodes, and a stable photocurrent value was obtained under the irradiation of a xenon lamp. When 50ppm, 100ppm, 150ppm and 200ppm toluene gas were injected into the quartz vial, the photocurrent between the two electrodes increased significantly.

[0041] (see attached Figure 8 ).

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 stannic oxide-polyacid compound gas sensing material and a preparation method thereof. The prepared new polyacid-modified stannic oxide nano-rod material can be applied to a photoelectric gas sensor. The material is the stannic oxide-polyacid compound material which is formed by taking stannic oxide (SnO2) nano-rod as a main body and modifying with a cyanogen metal complex modified Dawson type phosphowolframate ((C4H10ON)23[HN(CH2CH2OH)3]10H2[FeIII(CN)6(alpha2-P2W17O61CoII)4].27H2O). Under room temperature environment and irradiation of a xenon lamp, the sensor has obvious sensing detecting property for toxic formaldehyde and methylbenzene gas. The preparation method for the stannic oxide-polyacid compound gas sensing material provided by the invention is simple and is fit for the development and production of a novel high-performance gas sensor.

Description

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

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
Owner NORTHEAST NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap