A preparation of sno with privet tree pollen as a template 2 Methods

A pollen and privet technology, applied in cobalt oxide/cobalt hydroxide, material analysis using wave/particle radiation, instruments, etc., can solve the problems of destroying the morphology of biological templates and affecting the gas-sensing properties of gas-sensing materials, achieving Avoid collapse and deformation and enhance the effect of gas sensing performance

Active Publication Date: 2022-04-19
HENAN INST OF SCI & TECH
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AI Technical Summary

Problems solved by technology

Bio-template technology uses natural organisms as templates and is 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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  • A preparation of sno with privet tree pollen as a template <sub>2</sub> Methods
  • A preparation of sno with privet tree pollen as a template <sub>2</sub> Methods
  • A preparation of sno with privet tree pollen as a template <sub>2</sub> Methods

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Embodiment 1

[0024] Pollen pretreatment process:

[0025] 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 30min 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;

[0026] 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 solution wit...

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Abstract

The invention discloses a method for preparing SnO by using privet tree pollen as a template 2 The method, the present invention uses Ligustrum lucidum pollen as a template, adopts the template impregnation method, and through ultrasonic impregnation, centrifugal washing, calcination and other technological processes, successfully synthesizes a three-dimensional porous skeleton network structure material, and observes the synthesized sample through a scanning electron microscope , the sample well retains the multi-level pore structure of the pollen, which accelerates the gas diffusion, and the product can better react with the gas and enhance the gas-sensing performance. The preparation method of the present invention melts the cobalt nitrate in the early stage through the decomposition and volatilization of ammonium chloride After that, it is adsorbed on the pollen surface, fully combined with the template, and decomposed after the temperature rises further. Co is reinforcing the template, avoiding the collapse and deformation of the template, and destroying the pollen morphology. 2 Effective doping, under the condition of no light and blue light, has good gas sensitivity to propylene glycol, methanol and ethanol.

Description

technical field [0001] The invention relates to the technical field of synthesis of semiconductor gas-sensitive materials, in particular to a method for preparing SnO by using privet tree pollen as a template. 2 Methods. Background technique [0002] At the present stage, environmental issues have been highly valued by people. In order to survive and develop better, human beings need to use external devices to perceive 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 people's exhaled breath contains a certain gas, a certain lesion can be detected; The extension has been widely concerned and developed rapidly. The gas sensor can convert useful information into electrical signals, so it has a good application prospect in environmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G51/04C01G19/02G01N23/2202G01N23/2251G01N27/12
CPCC01G51/04C01G19/02G01N27/125G01N23/2251G01N23/2202C01P2004/03C01P2002/72C01P2004/61
Inventor 侯超逸段凌瑶李芸玲娄慧慧王吉超程银峰侯振雨
Owner HENAN INST OF SCI & TECH
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