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a sno 2 /mos 2 Two-dimensional macroporous composite film, preparation method and application thereof

A composite material thin film and thin film technology, applied in analytical materials, nanotechnology for materials and surface science, instruments, etc., can solve the problems of long response time, general response performance, and poor sensing performance, and achieve good results. The effect of gas-sensing response, excellent gas-sensing performance, and increased specific surface area

Active Publication Date: 2022-05-24
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

SnO synthesized by YutongHan et al. 2 / MoS 2 Heterojunction in NO 2 In gas, 5ppm at room temperature is 18, but the sensing performance becomes worse at a slightly higher temperature, and basically responds well to low concentrations, and the response performance is average when the concentration is high, and the response recovery time is long

Method used

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  • a sno <sub>2</sub> /mos <sub>2</sub> Two-dimensional macroporous composite film, preparation method and application thereof
  • a sno <sub>2</sub> /mos <sub>2</sub> Two-dimensional macroporous composite film, preparation method and application thereof
  • a sno <sub>2</sub> /mos <sub>2</sub> Two-dimensional macroporous composite film, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) The glass was ultrasonically treated with acetone for 45 minutes, ethanol solution was ultrasonicated for 45 minutes, deionized water was ultrasonically cleaned for 30 minutes and the water was repeatedly changed, and the piranha solution was soaked for 4 hours and then cleaned with deionized water;

[0038] (2) Mix the PS ball solution with alcohol at a ratio of 1:1, and after ultrasonic dispersion for 10 minutes, spread the PS balls with water on the glass substrate of 25mm*75mm after hydrophilic treatment, and then carry out single-layer self-assembly of the PS balls on the glass substrate; The self-transfer characteristics of the PS ball monolayer film were transferred to a 25mm*30mm glass sheet; then the self-assembled PS monolayer template was placed in a blast drying oven at 90°C for 90min to make the PS template and 25mm*30mm. The glass substrate is more tightly bonded;

[0039] (3) With 0.2mol / L SnCl 4 ·5H 2 O solution is the precursor solution, and the P...

Embodiment 2

[0045] (1) The glass was ultrasonically treated with acetone for 45 minutes, ethanol solution was ultrasonicated for 45 minutes, deionized water was ultrasonically cleaned for 30 minutes and the water was repeatedly changed, and the piranha solution was soaked for 4 hours and then cleaned with deionized water;

[0046] (2) Mix the PS ball solution with alcohol at a ratio of 1:1, and after ultrasonic dispersion for 10 minutes, cover the hydrophilic treated 25mm*75mm glass sheet with water, and then carry out single-layer self-assembly of the PS balls on the glass substrate; The self-transfer characteristics of the PS ball monolayer film were transferred to a 25mm*30mm glass sheet; the self-assembled PS monolayer template was placed in a blast drying oven at 90°C for 90min to make the PS template and 25mm*30mm glass substrate. more closely combined;

[0047] (3) With 0.2mol / L SnCl 4 ·5H 2 O solution is the precursor solution, and the PS monolayer film template obtained in step...

Embodiment 3

[0050] (1) The glass was ultrasonically treated with acetone for 45 minutes, ethanol solution was ultrasonicated for 45 minutes, deionized water was ultrasonically cleaned for 30 minutes and the water was repeatedly changed, and the piranha solution was soaked for 4 hours and then cleaned with deionized water;

[0051] (2) Mix the PS ball solution with alcohol at a ratio of 1:1, and after ultrasonic dispersion for 10 minutes, cover the hydrophilic treated 25mm*75mm glass sheet with water, and then carry out single-layer self-assembly of the PS balls on the glass substrate; The self-transfer characteristics of the PS ball monolayer film were transferred to a 25mm*30mm glass sheet; the self-assembled PS monolayer template was placed in a blast drying oven at 90°C for 90min to make the PS template and 25mm*30mm glass substrate. more closely combined;

[0052] (3) With 0.05mol / L SnCl 4 ·5H 2 O solution is the precursor solution, and the PS monolayer film template obtained in ste...

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Abstract

The invention discloses a SnO 2 / MoS 2 The invention relates to a two-dimensional macroporous composite film, a preparation method and an application thereof, belonging to the field of sensor material preparation. In the preparation method of the present invention, the PS template is soaked so that the SnCl 4 ·5H 2 The O solution fills the gaps between the PS microspheres, followed by annealing to vaporize the PS spheres to form SnO 2 macroporous film; followed by hydrothermal reaction, the regular arrangement of SnO 2 Based on the macroporous structure, the introduction of MoS 2 Nanosheets, through regulation, make PS template → SnO 2 Macroporous film→SnO 2 / MoS 2 Macroporous film. SnO of the present invention 2 / MoS 2 Two-dimensional macroporous composite film, the porous structure is conducive to gas discharge, the compounding of nanosheets increases the specific surface area of ​​the film, and increases the surface active sites, which greatly improves the gas-sensing performance, and the gas-sensing performance is more excellent. Nitrogen gas has a good gas sensitivity response.

Description

technical field [0001] The invention belongs to the field of sensor material preparation, in particular to a SnO 2 / MoS 2 Two-dimensional macroporous composite film, preparation method and application. Background technique [0002] Nowadays, environmental pollution and air quality issues have attracted much attention, and gas sensors with excellent performance are required to monitor toxic gases in the environment. SnO synthesized by YutongHan et al. 2 / MoS 2 Heterojunction in NO 2 In the gas, 5ppm at room temperature is 18, but the sensing performance becomes worse at a slightly higher temperature. Basically, it has a good response to low concentrations. When the concentration is high, the response performance is average, and the response recovery time is long. SUMMARY OF THE INVENTION [0003] The object of the present invention is to overcome the shortcoming of the above-mentioned prior art, provide a kind of SnO 2 / MoS 2 Two-dimensional macroporous composite fil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C17/25G01N33/00C01G19/02C01G39/06B82Y40/00B82Y30/00
CPCC03C17/25C03C17/002C03C17/006G01N33/0037C01G19/02C01G39/06B82Y40/00B82Y30/00C03C2217/29C03C2217/425C03C2218/111C03C2218/32C01P2004/24C01P2006/16Y02A50/20
Inventor 戴正飞赵颖刘航李佳磊
Owner GUILIN UNIV OF ELECTRONIC TECH
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