Method for preparing one-dimensional Mg(OH)2 through fast precipitation

Abstract

The invention relates to the technical field of nanometer material preparation, and discloses a method for preparing one-dimensional Mg(OH)2 through fast precipitation. The method comprises the following steps of (1) dissolving 0.13 M of Mg(NO3)2.6H2O into 15 ml of water, and performing uniform stirring for later use; (2) dissolving 0.4 M of NaHCO3 into 15 ml of water in step 1, and performing uniform stirring until the two solutions are mixed to separate out a great number of visible white precipitates; and (3) washing the white precipitates several times with water and ethanol, then performing drying at 60 DEG C by using a vacuum baking oven to obtain the high-purity one-dimensional nanometer material Mg(OH)2. The method for preparing the one-dimensional Mg(OH)2 through fast precipitation has the advantages that a target material is prepared through fast precipitation by using sodium bicarbonate (NaHCO3) as a precipitation agent; and the NaHCO3 has a low dissociation coefficient, canslowly release OH<-> ions, and balance the material growth speed and diffusion speed, so that the materials can grow in a fixed direction according to the one-dimensional direction in the growth process.

Description

technical field [0001] The invention relates to the technical field of preparation of nanomaterials, in particular to a rapid precipitation preparation of one-dimensional Mg(OH) 2 Methods. Background technique [0002] Mg(OH) 2 It belongs to metal hydroxide, because of its special crystal structure and its derived oxides, this substance has a wide range of potential applications in many fields such as energy storage and catalysis. The rapid mass preparation of the electrode material preparation and ion conductor material synthesis has a wide range of applications. In particular, its special one-dimensional structure has directional electron ion conduction direction, strong stress bearing capacity and short axial ion transport path, which is considered to be a very important branch of nanomaterials. [0003] After literature review and summary, the existing preparation of one-dimensional Mg(OH) 2 The method of nanomaterials is mainly to use the hydrothermal method to make...

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a rapid precipitation preparation of one-dimensional Mg(OH) 2 method, with the use of sodium bicarbonate (NaHCO 3 ) is a precipitant that quickly precipitates the target material and solves the problem of the existing preparation of one-dimensional Mg(OH) 2 The method of nanomaterials mainly uses the hydrothermal method to make the material grow in a specific direction with the assistance of surfactants.

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