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Ordered Cu-doped nano-porous tin oxide sensing device

A technology of tin oxide sensor and nanopore, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, and can solve problems such as potential safety hazards, flammable gases that are easy to detonate, and increased energy consumption, so as to avoid Destroy, enhance the effect of the breadth of work use and ease of operation

Inactive Publication Date: 2015-11-18
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The introduction of the heating system not only increases energy consumption, but also easily detonates flammable gases, which brings huge safety hazards

Method used

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  • Ordered Cu-doped nano-porous tin oxide sensing device
  • Ordered Cu-doped nano-porous tin oxide sensing device
  • Ordered Cu-doped nano-porous tin oxide sensing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. At room temperature, configure graphene oxide solution (solvent is deionized water) 1mg / ml, adjust the pH value to 9-10, start the homogenizer, take 100ul solution with a pipette, and control the speed of the homogenizer to 2000rpm , spin coating time is 30s.

[0026] 2. Dry the device (interdigitated gold electrode) coated with graphene oxide at 60°C. Weigh 0.04g of copper chloride and 1g of anhydrous tin tetrachloride, dissolve them in absolute ethanol, add 0.4g of surfactant F127, then add 1ml of concentrated hydrochloric acid, mix well to obtain a clear solution. Start the homogenizer, fix the graphene oxide-coated device in the chamber of the homogenizer, control the humidity of the chamber to 10%, spin-coat at a speed of 4000rpm, spin-coat for 30s, and repeat the spin-coating once. After drying the above-mentioned newly prepared sensor material device, put the device into a closed container, adjust the relative humidity in the container to 70%, and then put th...

Embodiment 2

[0033] 1. At room temperature, prepare a graphene oxide solution of 5 mg / ml, adjust the pH value to 9-10, start the homogenizer, take 100ul of the solution with a pipette, control the speed of the homogenizer to 2000rpm, and spin coating time to 45s.

[0034] 2. Dry the device coated with graphene oxide at 60°C. Weigh 0.08g of copper nitrate and 1.5g of tin tetranitrate, dissolve them in absolute ethanol, add 0.36g of surfactant P123, then add 1ml of concentrated hydrochloric acid, mix well to obtain a clear solution. Start the homogenizer, fix the graphene oxide-coated device in the chamber of the homogenizer, control the humidity of the chamber to 30%, spin-coating speed to 4000rpm, spin-coating time to 45s, and repeat the spin-coating 5 times. After drying the above-mentioned newly prepared sensor material device, put the device into a closed container, adjust the relative humidity in the container to 80%, and then put the container into a blast drying oven to adjust the te...

Embodiment 3

[0038]1. At room temperature, prepare a graphene oxide solution of 10mg / ml, adjust the pH value to 9-10, start the homogenizer, take 100ul solution with a pipette, control the speed of the homogenizer to 2000rpm, and spin coating time to 60s.

[0039] 2. Dry the device coated with graphene oxide at 60°C. Weigh 0.042g of copper sulfate and 1.3g of tin sulfate, dissolve them in absolute ethanol, add 0.36g of surfactant F127, then add 1ml of concentrated hydrochloric acid, mix well to obtain a clear solution. Start the homogenizer, fix the graphene oxide-coated device in the chamber of the homogenizer, control the humidity of the chamber to 50%, spin-coat at a speed of 4000rpm, spin-coat for 60s, and repeat the spin-coating 10 times. After drying the above-mentioned newly prepared sensing material device, put the device into an airtight container, adjust the relative humidity in the container to 95%, and then put the container into a blast drying oven to adjust the temperature to...

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Abstract

The invention discloses an ordered Cu-doped nano-porous tin oxide sensing device. The sensing device is produced through the following steps: 1, producing an interdigital electrode-based graphene oxide film through adopting a spin coating method; 2, producing a device coated with a composite sensing film through a spin coating method, drying, and carrying out hot steam treatment; 3, removing a template from the device obtained in step 2; and 4, carrying out a reduction reaction on the device obtained in step 3 under an ultraviolet radiation condition to obtain the nano-porous tin oxide sensing device. The ordered Cu-doped nano-porous tin oxide sensing device has an excellent sensing performance, and the response time and the recovery time to low concentration H2S gas are shorter than 20s respectively.

Description

technical field [0001] The invention relates to a gas sensor, in particular to a thin-film high-selectivity room-temperature H 2 S gas sensor device. Background technique [0002] With the rapid development of science and technology, modern industry has brought huge economic benefits and civilization progress to mankind, but it has also brought safety and environmental problems, especially in the production process of energy industries such as petroleum and coal. There are a lot of flammable, explosive and toxic substances . Faced with such serious safety and environmental problems, governments of various countries have increased investment in and research and development of sensor technology. The U.S. government has always attached great importance to the research and development support of sensor technology, and has introduced plans to develop new sensors for the detection of toxic and harmful gases out of the needs of energy security. In 2011, my country released the n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/00B82Y40/00B82Y30/00
Inventor 邵绍峰刘战辉王世敏洪琦棱费佳蕾雷雅婷
Owner NANJING UNIV OF INFORMATION SCI & TECH
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