Method for preparing niobium pentoxide nano stick

A niobium pentoxide and nanorod technology, applied in chemical instruments and methods, inorganic chemistry, silicon compounds, etc., can solve the problems of complex reaction process and expensive equipment, and achieve the effect of simple and easy method and large-scale production.

Inactive Publication Date: 2009-03-25
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing niobium pentoxide nanorods in order to solve the problems of

Method used

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  • Method for preparing niobium pentoxide nano stick
  • Method for preparing niobium pentoxide nano stick
  • Method for preparing niobium pentoxide nano stick

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specific Embodiment approach 1

[0008] Embodiment 1: The preparation method of niobium pentoxide nanorods in this embodiment is as follows: 1. After mixing calcium niobate nanorods and hydrochloric acid with a concentration of 0.01~1mol / L according to the molar ratio of 1:10~20 Stir for 30 to 120 minutes, then centrifuge the obtained product and rinse it with deionized water for 3 to 5 times to obtain niobic acid nanorods; 2. Anneal the niobic acid nanorods in air at a temperature of 600 to 750°C for 1 to After 3 hours, niobium pentoxide nanorods were obtained.

specific Embodiment approach 2

[0009] Embodiment 2: This embodiment differs from Embodiment 1 in that the concentration of hydrochloric acid in step 1 is 0.02-0.5 mol / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0010] Embodiment 3: This embodiment differs from Embodiment 1 in that the concentration of hydrochloric acid in step 1 is 0.12-0.4 mol / L. Others are the same as in the first embodiment.

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Abstract

The invention relates to a preparation method for a niobium pentaoxide nano rod which belongs to the field of inorganic synthesis and preparation, and particularly relates to a preparation method for a nano rod. The invention solves the problems that the equipment used for preparing the niobium pentaoxide one-dimensional nano-material is expensive and the reaction process is complex in the prior art. The invention comprises the following steps: 1. the calcium niobate nano rod is mixed with the hydrochloric acid with the concentration of 0.01 to 1mol/L in accordance with the mol ratio of 1:10 to 20 and then stirred for 30 to 120 minutes by magnetic force, later the obtained product undertakes centrifugal separation and is rinsed for 3 to 5 times with deionized water so as to obtain the niobate nano rod; 2. the niobate nano rod is annealed for 1 to 3 hours in the air at the temperature of 600 to 750 DEG C, then a niobium pentaoxide nano rod is obtained. The method is simple and feasible, can obtain one-dimensional niobium pentaoxide nano-material without expensive equipment for production, and can realize large-scale production.

Description

technical field [0001] The invention belongs to the field of inorganic synthesis and preparation, and in particular relates to a preparation method of nanorods. Background technique [0002] Niobium pentoxide (Nb 2 o 5 ) is an important n-type semiconductor material with a bandgap of about 3.4eV. Niobium pentoxide has important applications in gas sensing, catalysis, and optoelectronic devices. German magazine "Advanced Materials" (Advanced Materials, 2005, Vol. 17, page 2138) reported that Nb 2 o 5 For the synthesis of nanowires, the author put the niobium foil in the plasma of oxygen for 90 seconds, and obtained Nb on the surface of the niobium foil 2 o 5 array of nanowires. "Advanced Materials" magazine (Advanced Materials, 2008, Volume 20, page 1055) first obtained H-Nb through hydrothermal treatment 2 o 5 nanorod arrays, and then obtained Nb by the method of secondary hydrothermal treatment 2 o 5 array of nanotubes. However, these two methods for preparing on...

Claims

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Application Information

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IPC IPC(8): C01B33/00
Inventor 徐成彦甄良
Owner HARBIN INST OF TECH
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