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

Gas-sensitive sensor based on cobaltosic oxide nanoneedle as well as preparation method thereof

A technology of cobalt tetroxide nanometer and cobalt tetroxide gas is applied in the field of nano-sensors, which can solve the problems of high optimal working temperature, cumbersome preparation process, poor working performance, etc., and achieve the effects of increasing surface active points, large electron mobility and simple structure

Active Publication Date: 2014-01-29
ZHEJIANG UNIV
View PDF4 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems of cumbersome preparation process, high cost, high optimal working temperature and poor working performance of the existing gas sensor, the present invention provides a nanoneedle based on cobalt trioxide with simple preparation process, excellent performance and wide application range. Gas sensor and preparation method thereof

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
  • Gas-sensitive sensor based on cobaltosic oxide nanoneedle as well as preparation method thereof
  • Gas-sensitive sensor based on cobaltosic oxide nanoneedle as well as preparation method thereof
  • Gas-sensitive sensor based on cobaltosic oxide nanoneedle as well as preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0051] The gas sensor based on the cobalt trioxide nanoneedle of this implementation, such as figure 1 As shown, it includes an insulating substrate, a comb-shaped intersecting electrode layer and a cobalt tetraoxide gas-sensing sensing layer from bottom to top.

[0052] In this implementation:

[0053] The insulating substrate is a polycrystalline alumina ceramic sheet with an area of ​​2×1cm 2 .

[0054] The diameter of the cobalt trioxide nanoneedle array is 50nm-200nm, and the length is 10μm.

[0055] The material of the comb-shaped intersecting electrode layer is silver-palladium alloy, and the specific structure is as follows: figure 2 As shown, the thickness is 90nm-100nm, and the distance between adjacent intersecting electrodes is 100μm.

[0056] The preparation method of the cobalt trioxide nanoneedle gas sensor based on the pre...

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
Lengthaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a gas-sensitive sensor based on cobaltosic oxide nanoneedle array as well as a preparation method thereof. The sensor structurally comprises an insulation substrate, a comb-shaped crossed electrode layer and a cobaltosic oxide gas-sensitive sensing layer which is a cobaltosic oxide nanoneedle array from bottom to top in sequence. According to the preparation of the gas-sensitive sensor based on water thermal reaction, the water solution used in the water thermal reaction contains cobalt salt, bonding agents and alkaline reactant; according to the gas-sensitive sensor provided by the invention, the cobaltosic oxide nanoneedle array is taken as the gas-sensitive sensor; the device is simple in structure, and the performance is superior, and the nanoneedle has a large specific surface area and electron mobility, and is beneficial to improving the flexibility of the gas-sensitive sensor, the best working temperature is reduced to be 130 DEG C, the preparation method is simple, the cost is low, and the difficulty of dispersing or operating nano materials is avoided; the prepared gas-sensitive sensor is small in performance difference, and is suitable for industrial mass production.

Description

technical field [0001] The invention belongs to the technical field of nanometer sensors, in particular to a gas sensor based on cobalt trioxide nanoneedles and a preparation method thereof. Background technique [0002] With the rapid development of my country's economic level and residents' living standards in recent years, people's demand for gas sensors has become increasingly prominent. Gas sensor, also known as "gas sensor", refers to a sensor device that uses various chemical and physical effects to convert gas composition and concentration into electrical signal output according to certain rules. It is the most active type of chemical sensor. As early as the 1930s, people had discovered that metal oxide semiconductors had a gas-sensing effect. At first, semiconductor gas-sensing sensors were mainly used to detect flammable and toxic gases. Food, mining, national defense security, and automatic monitoring of industrial production have been paid more and more attentio...

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
IPC IPC(8): G01N27/12
Inventor 朱丽萍文震李亚光
Owner ZHEJIANG UNIV
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