CN104445352A - Synthetic method of nano yttrium oxide powder - Google Patents

Abstract

The invention discloses a synthetic method of nano yttrium oxide powder. The synthetic method comprises the following steps: (1) firstly adding glycerol to a yttrium acetate solution; (2) then adding a sodium hydroxide solution to the solution in the step (1), adjusting the pH value of the solution to be 11-13 and then reacting at 170-200 DEG C for 20-30 hours; (3) filtering the filtrate in the step (2) and washing, drying and calcining the filter residues to obtain the nano yttrium oxide powder. Compared with existing methods, the method has the advantages that the nano yttrium oxide powder obtained by adopting the method is a sphere with homogeneous morphology, and the grain size of the nano yttrium oxide powder can be controlled to be 20-35nm.

Description

A kind of synthetic method of nano yttrium oxide powder

Technical field

The present invention relates to a kind of synthetic method of nano yttrium oxide powder.

Background technology

Yttrium oxide (Y ₂o ₃) be a kind of important rare earth compound, there is unique thermotolerance, erosion resistance, high-k and a series of excellent optical property, be widely used in the fields such as advanced ceramic, photoelectric device, catalyzer.

In recent years, expand the preparation of nano yttrium oxide powder both at home and abroad and study widely, main preparation methods comprises sol-gel method, vapour deposition process, microemulsion method and hydrothermal method, and hydrothermal method has the advantage that technique is simple, equipment cost is low, but the powder generated easily is reunited, separation difficulty.

Summary of the invention

The technical problem to be solved in the present invention overcomes existing defect, provides a kind of synthetic method of nano yttrium oxide powder.

In order to solve the problems of the technologies described above, the invention provides following technical scheme:

A synthetic method for nano yttrium oxide powder, comprises the steps:

(1) first in acetic acid yttrium solution, glycerol is added;

(2) in the solution of step (1), sodium hydroxide solution is added again, regulator solution pH to 11-13, then at 170-200 DEG C of reaction 20-30 hour;

(3) reacting liquid filtering of step (2), filter residue obtains nano yttrium oxide powder after washing, drying, calcining.

Further, the consumption of glycerol is the 1-5% of acetic acid yttrium quality.

Acetic acid yttrium strength of solution is preferably 0.05-0.5mol/L.

Embodiment

Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.

embodiment 1

A synthetic method for nano yttrium oxide powder, comprises the steps:

(1) first is add glycerol in the acetic acid yttrium solution of 0.2mol/L to solution, and glycerol adds by 1% of acetic acid yttrium quality, stirs;

(2) in the solution of step (1), saturated sodium hydroxide solution is added again, regulator solution pH to 11, then 180 DEG C of reactions 24 hours;

(3), after reaction, reacting liquid filtering, filter residue washes 6 times with water, vacuum-drying 4 hours, then calcines 1 hour at 600 DEG C, obtains nano yttrium oxide powder.

embodiment 2

A synthetic method for nano yttrium oxide powder, comprises the steps:

(1) first is add glycerol in the acetic acid yttrium solution of 0.1mol/L to solution, and glycerol adds by 5% of acetic acid yttrium quality, stirs;

(2) in the solution of step (1), saturated sodium hydroxide solution is added again, regulator solution pH to 13, then 200 DEG C of reactions 24 hours;

(3), after reaction, reacting liquid filtering, filter residue washes 6 times with water, vacuum-drying 4 hours, then calcines 1 hour at 600 DEG C, obtains nano yttrium oxide powder.

embodiment 3

A synthetic method for nano yttrium oxide powder, comprises the steps:

(1) first is add glycerol in the acetic acid yttrium solution of 0.05mol/L to solution, and glycerol adds by 2% of acetic acid yttrium quality, stirs;

(2) in the solution of step (1), saturated sodium hydroxide solution is added again, regulator solution pH to 12, then 180 DEG C of reactions 24 hours;

(3), after reaction, reacting liquid filtering, filter residue washes 6 times with water, vacuum-drying 4 hours, then calcines 1 hour at 620 DEG C, obtains nano yttrium oxide powder.

The inventive method is easy to be separated, and the nano yttrium oxide powder of gained is homogeneous spherical of pattern, and size tunable is built in 20-35nm.

Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (2)

1. a synthetic method for nano yttrium oxide powder, comprises the steps:

(1) first in acetic acid yttrium solution, glycerol is added;

(2) in the solution of step (1), sodium hydroxide solution is added again, regulator solution pH to 11-13, then at 170-200 DEG C of reaction 20-30 hour;

(3) reacting liquid filtering of step (2), filter residue obtains nano yttrium oxide powder after washing, drying, calcining.

2. synthetic method according to claim 1, is characterized in that, the consumption of step (1) described glycerol is the 1-5% of acetic acid yttrium quality.