SnO2 flowerlike structure nano material and hydrothermal preparation method for the same

Abstract

The invention discloses a SnO2 flowerlike structure nano material and a hydrothermal preparation method for the same. The method comprises the following steps of: respectively dissolving SnCl4.5H2O and NaOH in deionized water; stirring the SnCl4 solution at 4-25 DEG C, and dropping the NaOH in the SnCl4 solution to get a precursor solution, wherein in the precursor solution, concentration of tin ions is 0.1 mol / L-0.3 mol / L, concentration of hydroxy radical is 0.9 mol / L-3.3 mol / L, and molar concentration ratio of the hydroxy radical ions to the tin ions is 9-11:1; transferring the precursor solution into a reaction kettle so as to be sealed, and preserving heat for 8-12 hours at 190-200 DEG C, wherein the degree of filling of the reaction kettle is 70%; cooling to room temperature after reaction, repeatedly washing and filtering the reacted product with the deionized water and the absolute ethyl alcohol, until obtaining the filtrate with pH value of 7, drying the filtered product at 60 DEG C, and obtaining the flowerlike structure SnO2 nano material. The product is in the shape of three-dimensional flowerlike nano line clusters, specifically, a flower bud is composed of monocrystalline SnO2 nano lines arranged along the radial direction from the same center of sphere, diameter of the nano line is 90-400 nm, length of the nano line is 950-1200 nm, and draw ratio of the nano line is 3.00-10.56.

Description

technical field [0001] The invention belongs to the field of material preparation, in particular to a SnO 2 Flower-like structured nanomaterials and their hydrothermal preparation methods. Background technique [0002] SnO 2 It is a typical n-type direct bandgap wide bandgap oxide semiconductor material, which has the following advantages: (1) It has a wide bandgap (E g =3.6eV) and high exciton binding energy (130meV); (2) low cost; (3) various preparation methods and product morphologies. These characteristics make SnO 2 It has unique advantages and broad application potential in the field of semiconductor devices and functional materials, especially SnO 2 Low-dimensional nanomaterials have shown broad application prospects in catalysts, anode materials for lithium-ion batteries, electromagnetic wave absorption, solar cells, sensors, and optoelectronic devices. Meanwhile, flower-like nanostructured SnO with controllable aspect ratio 2 High versatility makes it have im...

AI Technical Summary

Problems solved by technology

In the current research results, no SnO composed of single crystal nanowires with a common spherical center and arranged along the radial direction has not been found. 2 Related reports on flower-like structure nanomaterials

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