Preparation method and application of pentagonal-pyramid-shaped SnO2 nano-ordered array hierarchical configuration structure nano material
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A technology of ordered array and hierarchical structure, applied in the field of nanometer ordered array materials, can solve the problems of volatile, toxic and harmful, and achieve the effect of promoting physical and chemical changes
Inactive Publication Date: 2019-09-27
YUNNAN UNIV
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However, some organic solvents often have toxic, harmful and volatile properties, such as heptane, hexanol, sodium lauryl sulfate, sodium hydroxide, potassium hydroxide, NH 4 (OH) and hydrochloric acid, etc., have significant negative effects on human health and the environment during use
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Embodiment 1
[0037] Example 1: SnO in the shape of a pentagonal pyramid 2 A method for preparing a nano-ordered array hierarchical structure structure, the specific steps are as follows:
[0038] (1) with Na 2 SnO 3 4H 2 O is a tin source, and the tin source is dissolved in deionized water to form a solution A;
[0039] (2) Under stirring conditions, add absolute ethanol dropwise to solution A in step (1) to react for 30 to 60 minutes to form solution B;
[0040] (3) Place the solution B in step (2) under ultrasonic conditions for ultrasonic treatment for 20-60 minutes to form a precursor solution reaction system;
[0041] (4) Place the reaction system of the precursor solution in step (3) at a temperature of 180-250°C to react for 24-72 hours, cool down, separate the solid from the liquid, wash the solid with deionized water and absolute ethanol in sequence, and dry the solid. SnO with pentagonal pyramid shape 2 Nanometer ordered array hierarchical structure structure nanomaterial; ...
Embodiment 2
[0052] Example 2: SnO in the shape of a pentagonal pyramid 2 Application of Nanoscale Ordered Array Hierarchical Structure Nanomaterials in Preparation of Gas Sensors
[0053] (1) Wash the pentagonal pyramid-shaped SnO with absolute ethanol 2 Nano-ordered array hierarchical structure structure nanomaterials (labels 8, 10, 15, 20, 30), then washed with deionized water, separated, and dried;
[0054] (2) Using terpineol as a binder, the pentagonal SnO 2 Nano-ordered array hierarchical structure structure nano-materials are added to terpineol and mixed uniformly to prepare gas-sensitive slurry;
[0055] (3) Evenly apply the gas-sensitive slurry on the surface of the ceramic tube of the electrode to form a gas-sensitive coating;
[0056] (4) Sinter the ceramic tube coated with the gas-sensitive coating at a temperature of 450°C for 3 hours, put the wound heating wire in the ceramic tube, and weld the electrode lead and the heating wire to the element base On, the production of...
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Abstract
The invention discloses preparation method and application of a pentagonal-pyramid-shaped SnO2 nano-ordered array hierarchical configuration structure nano material, and belongs to the technical field of nano-ordered array materials. The pentagonal-pyramid-shaped SnO2 nano-ordered array hierarchical configuration structure nano material is composed of nanorods with the diameter of 4-50 nm. The preparation method comprises the following steps: taking Na2SnO3.4H2O as a tin source, and dissolving the tin source in deionized water to form a solution A; under a stirring condition, dropwise adding anhydrous ethanol into the solution A for 30-60 min to form a solution B; placing the solution B under an ultrasonic condition for an ultrasonic treatment reaction for 20-60 min to form a precursor solution reaction system; placing the precursor solution reaction system under the condition of the temperature of 180-250 DEG C for 24-72 h, cooling, performing solid-liquid separation, washing a solid with the deionized water and the anhydrous ethanol sequentially, and drying the solid to obtain a pentagonal-pyramid-shaped SnO2 nano-ordered array hierarchical configuration structure. The pentagonal-pyramid-shaped SnO2 nano-ordered array hierarchical configuration structure nano material disclosed by the invention can be used for preparing gas sensors.
Description
technical field [0001] The invention relates to a pentagonal pyramid shape SnO 2 The invention relates to a preparation method and application of a nanomaterial of a hierarchical structure structure of a nanometer ordered array, belonging to the technical field of nanometer ordered array materials. Background technique [0002] Due to the reduction of material dimensions and the reduction of structural feature size, one-dimensional nanomaterials such as nanorods and nanowires have significant surface and interface effects, small size effects, and quantum size effects, which make them novel and different from traditional materials. Unique electrical, magnetic, optical, thermal and other physical and chemical properties, they have broad application prospects in optoelectronic materials, sensors, catalysts, etc. At present, various one-dimensional nanomaterials, such as nanorods, nanowires, nanobelts, and nanotubes, have been synthesized one after another. However, the loosen...
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