Synthesis of sno with the pollen of Ligustrum lucidum as a template 2 Application in gas sensitive materials

A technology of gas-sensitive materials and privet, which is applied in the fields of material resistance, material analysis, material analysis by electromagnetic means, etc., can solve the problems of destroying the morphology of biological templates, affecting the gas-sensing properties of gas-sensitive materials, and avoiding collapse. The effect of deformation and enhancement of gas-sensing performance

Active Publication Date: 2022-04-19
HENAN INST OF SCI & TECH
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Problems solved by technology

Bio-template technology uses natural organisms as templates and is established based on the principle of impregnation and high-temperature calcination. There are many types of organisms that can be used as templates in nature. The bio-template method can reproduce the shape of the original template very well, but the conventional calcination method It will destroy the morphology of the biological template and affect the gas-sensing performance of the gas-sensing material

Method used

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  • Synthesis of sno with the pollen of Ligustrum lucidum as a template <sub>2</sub> Application in gas sensitive materials
  • Synthesis of sno with the pollen of Ligustrum lucidum as a template <sub>2</sub> Application in gas sensitive materials
  • Synthesis of sno with the pollen of Ligustrum lucidum as a template <sub>2</sub> Application in gas sensitive materials

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Embodiment 1

[0026] Pollen pretreatment process:

[0027] 1. Collect the flowers of Ligustrum lucidum, air-dry the flowers naturally, sieve out the pollen, collect for use, take 1.5g of NaOH and add it to 100ml of absolute ethanol solution, and ultrasonicate for 30 minutes until it is completely dissolved. Add 10g of Ligustrum lucidum pollen to the solution, ultrasonically for 3 hours, wash with absolute ethanol for 3 times to remove impurities in the pollen, put the cleaned pollen in a 60°C oven to fully dry, add 10% ammonium chloride Fully soak in the solution, and use strong ultrasound for 5 hours (control the temperature below 40°C) to obtain pretreated pollen for later use;

[0028] 2. Using absolute ethanol as a solvent, the crystalline SnCl4·5H2O and CoCl2·6H2O are respectively configured into a solution with a concentration of 0.1 mol / L. The two solutions are mixed according to the volume ratio (Co and Sn are doped according to the atomic molar ratio), and the impregnating solutio...

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Abstract

The invention discloses a method for synthesizing SnO by using Ligustrum lucidum pollen as a template 2 Application in gas sensitive materials, the SnO synthesized by the present invention 2 Using Ligustrum lucidum pollen as a template, using the template impregnation method, through ultrasonic impregnation, centrifugal washing, calcination and other processes, a three-dimensional porous skeleton network structure material was successfully synthesized, which well retained the pollen's multi-level pore structure, making the gas Diffusion is accelerated, and the product can react with the gas better. At the same time, the decomposition and volatilization of the ammonium salt component makes the cobalt nitrate melted in the early stage and then adsorbed on the surface of the pollen, fully combined with the template, and decomposed after the temperature rises further. , to avoid the collapse and deformation of the template, and destroy the pollen morphology. At the same time, the Co generated by the reaction can also affect the 2 With effective doping, the prepared gas sensor can effectively enhance the gas sensitivity to propylene glycol, methanol and ethanol under the conditions of no light and blue light.

Description

technical field [0001] The invention relates to the technical field of synthesis of semiconductor gas-sensitive materials, in particular to a kind of SnO synthesized by impregnating Ligustrum lucidum pollen as a template. 2 Applications in gas sensitive materials. Background technique [0002] The pollution of people's living environment is becoming more and more serious, and their health is threatened by environmental pollution. At this stage, people attach great importance to environmental problems. In order to survive and develop better, human beings need to use external devices to sense the environment. In order to detect air pollutants, people need an instrument with high sensitivity, which can efficiently and quickly detect harmful substances contained in the atmosphere. For the detection of people's health problems, this kind of equipment is also needed. According to whether there is a certain gas in people's exhaled breath, a certain lesion can be detected. Theref...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/12
CPCG01N27/125
Inventor 段凌瑶侯超逸李芸玲娄慧慧邓绍新夏克东侯振雨
Owner HENAN INST OF SCI & TECH
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